Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Come on, you can tell us. I hit 134-137 mph a few times a week, when conditions permit, on a certain stretch of my regular route, in my 400E. Can't go higher as there's an in-following highway lane further ahead with other cars always present and can't start accelerating sooner until after a turn out that is sometimes occupied by a highway patrolmanTotally agree on the 80+. I was driving mine earlier this week on very empty freeways around here, and it was just loving the higher speeds we were doing. I won't say how high but significantly above 80+.
This. ^^^I had my ...1992 400E in excess of 120 mph on a local freeway ... the perception of speed just wasn't there. In other words, you didn't feel like you were going that fast.
Sorry for the hijacking the thread but do you happen to know how long is that hose and where it ends? And is there any picture where the hose/route could be seen? It seems to be available from the dealer..Trivia: The existing hole is not for airflow to the resistor. There is supposed to be a short rubber hose connecting a hose barb on the headlight, that routes out through that hose. This keeps pressure from the "airbox" around the headlight from entering the headlight, potentially causing condensation to be pushed into the headlight housing.
The same headlight ventilation system is used on all 034/036.
View attachment 109681
You can see a couple of photos of this hose on the passenger side below.Sorry for the hijacking the thread but do you happen to know how long is that hose and where it ends? And is there any picture where the hose/route could be seen? It seems to be available from the dealer..
Ps.
Just found this topic it has very useful info and great detailed pictures! Thanks Gerry for the excellent work!
jnes
Another "dumb" question.. Are those foams E500E/E400E specific parts? Or can they be found pedestrian W124 models also?In response to a couple of folks who have asked about the so-called "finger foam" piece at the inside of the corners of the bumpers and fender area:
Part numbers are 124 628 51 98 (right side) and 124 628 55 98 (left side).
Both pieces are NLA from MB. RevParts sites say that both are available. Do not believe them.
![]()
Those foam pieces 124 628 51 98 and 124 628 55 98 can be found on other 124's, appears to be mostly V8's and diesels... but not on every 124 model. It isn't clear in the EPC why some have them, and others do not.Another "dumb" question.. Are those foams E500E/E400E specific parts? Or can they be found pedestrian W124 models also?
-jnes
I heard that those foam parts are found only in facelift models (E500)? Can someone verify that?Those foam pieces 124 628 51 98 and 124 628 55 98 can be found on other 124's, appears to be mostly V8's and diesels... but not on every 124 model. It isn't clear in the EPC why some have them, and others do not.
And on my 1992 400E as well.@jnes - I have the same foam parts on my 1992 500E.
For the M104, do you sugggest using the standard seal or the repair seal?Tonight I removed the crankshaft "hub" and harmonic balancer from the crankshaft. I used the puller I had, and a 3/4" box-end wrench to pull it off. It wasn't too much effort, but took a bit of strength. This exposed the leaking crankshaft seal, and the dirty area around the crank on the front of the timing cover and the top of the oilpan.
After installing the puller, I began turning the center shaft of the puller in a clockwise direction. This began the "pulling" action or the harmonic balancer and hub, together.
View attachment 101690
In the next couple of photos, you can see the hub and balancer progressively being pulled off of the crankshaft snout.
View attachment 101691 View attachment 101692
Here, the puller has been removed from the hub, and the hub has been extracted all of the way off of the crank snout. It can be removed by hand from here out. Note the black mark (made with a Sharpie marker) and the mark on the front of the block, to line up the hub and the crank (which has a Woodruff key on it for aligning the hub. Pull the hub off of the crank when it gets to this point.
View attachment 101693 View attachment 101694
With the hub removed from the crankshaft, I clamped it in a bench vise, and made a mark with a center punch where the Sharpie mark had been made with the hub on the car. Here you can see the center punch being used, and the small mark it made on the edge of the hub.
View attachment 101695 View attachment 101696
And here on the block, I made a corresponding mark with the center punch to formalize this marking I'd made earlier with a screwdriver. This will help when aligning the hub (with the Woodruff key) after installing the new front crank seal.
View attachment 101697 View attachment 101698
The next step is to thoroughly clean the area (I will block off the crank snout with tape to avoid dirt getting inside the engine past the seal). Then I will replace the seal, and re-install the hub, harmonic balancer and pulley. Note the pieces of corrugated wire and vacuum line sheathing that have flaked off over the years, and were sitting on top of the oil pan. These are also being removed. Hopefully the next installment will show "before" and "after" photos of the front of the timing cover being cleaned. I have 15 cans of brake cleaner ready to go to assist with cleaning!!
View attachment 101699View attachment 101700
Here are a few close-up views of the hub. You can clearly see the shiny area on the hub where the old crank seal rested. Although I couldn't "snag" this shiny area with my fingernail, I could definitely feel with my fingertips that the area was worn and slightly depressed from the rest of the hub surface.
View attachment 101701 View attachment 101702
Here's what the seal look like next to the hub, and resting on the hub in roughly the same position as the original seal. The trick will be to "set" the new seal in the end of the timing cover in a position where it is 2-3 mm off-set from the "old" crank seal position, which is where the shiny/depressed area is on the hub.
View attachment 101703 View attachment 101704
Here are a couple of close-up views of the hub, where you can really see the crank seal's resting area on the hub.
View attachment 101705 View attachment 101706
As Gerry said, use the standard seal. However BEFORE removing the old one, try to measure the position relative to the timing cover face. Ideally you want the replacement to be ~3mm away from the old position. If it was flush with the surface, use the seal install tool to press the new one in 3mm deeper.For the M104, do you sugggest using the standard seal or the repair seal?
I'm ready to start assembling the required pieces to refresh my top end at some point. I think this list --- in post #174 --- is THE list of parts to get (outside of completely NLA parts like the tank to catch excess overflow coolant) --- correct? Thanks.More parts added to the bottom of the list.
Part Number List Price Net Price I Paid Quantity Source Ordered Notes 119 200 15 01 85.50 85.50 1 Pelican Parts Jan-2018 Graf water pump for M119. 119 201 03 80 5.25 5.25 1 Pelican Parts Jan-2018 Genuine MB water pump gasket to engine. 120 997 03 46 6.50 6.50 2 Pelican Parts Jan-2018 Elring crankshaft seal (ordered 2). BM 116-0140 114.95 114.95 1 Pelican Parts Jan-2018 Baum Tools M117/M119 crankshaft lock. 119 078 00 81 4.00 3.00 1 MB Annapolis Apr-2018 Crankcase vapor hose rubber elbow 102 094 02 12 2.40 1.75 2 MB Annapolis Apr-2018 Crankcase breather hose joint 119 094 02 12 4.50 3.38 1 MB Annapolis Apr-2018 Crankcase breather hose joint 119 094 03 12 14.50 10.75 1 MB Annapolis Apr-2018 Crankcase breather hose joint 119 094 26 82 16.50 12.13 1 MB Annapolis Apr-2018 Crankcase breather elbow hose 119 094 27 82 19.50 14.38 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 28 82 40.00 30.00 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 31 82 28.50 21.25 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 40 82 20.00 15.00 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 44 82 28.50 21.25 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 55 82 33.50 25.00 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 71 82 33.50 25.00 1 MB Annapolis Apr-2018 Crankcase breather hose 000 987 27 27 10.50 7.88 2 MB Annapolis Apr-2018 Crankcase vapor hard plastic line. Superseded from 129 987 10 27 117 990 15 78 2.20 1.63 4 MB Annapolis Apr-2018 Crankcase breather hose joint 117 997 01 90 2.40 1.75 1 MB Annapolis Apr-2018 Breather hose clamp 126 997 06 90 0.70 0.50 1 MB Annapolis Apr-2018 Breather hose clamp 119 050 02 16 19.50 14.38 1 MB Annapolis Apr-2018 Timing chain rail - top 119 050 03 16 22.00 16.25 1 MB Annapolis Apr-2018 Timing chain rail - top 119 052 09 16 14.50 10.63 2 MB Annapolis Apr-2018 Timing chain plastic "comb" guide 119 052 11 16 14.50 10.63 2 MB Annapolis Apr-2018 Top timing chain rail - cylinder head 119 052 13 16 64.00 47.50 1 MB Annapolis Apr-2018 Timing chain slide rail, driver's side 119 094 45 82 14.00 10.25 1 MB Annapolis Apr-2018 Smog pump hose 119 094 46 82 28.50 21.25 1 MB Annapolis Apr-2018 Smog pump hose 119 094 47 82 12.50 9.25 1 MB Annapolis Apr-2018 Smog pump hose 119 094 72 82 24.50 18.13 1 MB Annapolis Apr-2018 Smog pump hose. Superseded from 119 094 57 82 000 141 94 25 379.00 379.00 1 RFC Electronics Apr-2020 Rebuild and test existing ETA by Don Roden 000 987 27 27 2.44 2.44 3 AutohausAZ Apr-2020 3 meters Cohline large diameter black crankcase breather line 018 997 79 47 4.16 4.16 2 AutohausAZ Apr-2020 Elring M119 camshaft seals 119 141 26 80 12.39 12.39 1 AutohausAZ Apr-2020 Elring M119 intake manifold gasket, right side 119 141 15 80 9.71 9.71 1 AutohausAZ
Apr-2020Elring M119 intake manifold gasket, left side HC 60809 1.68 1.68 2 AutohausAZ Apr-2020 Norma/Gemi MAF-ETA boot clamps. Ended up re-using MB clamps 000 158 14 35 1.87 1.87 10 AutohausAZ Apr-2020 10 meters Cohline vacuum line, white 119 142 08 80 1.94 1.94 1 AutohausAZ Apr-2020 Elring EGR valve gasket 116 200 03 15 18.49 18.49 1 AutohausAZ Apr-2020 Wahler thermostat for M117/M119 117 997 09 82 1.77 1.77 1 AutohausAZ Apr-2020 1 meter Cohline black rubber vacuum line 124 682 07 26 43.13 43.13 1 AutohausAZ Apr-2020 GK W124 hood pad (without aluminum foil rectangle) 008 542 45 17 16.15 16.15 1 FCP Euro Apr-2020 Beru two-prong coolant temp sensor at intake manifold 005 542 26 17 27.50 27.50 1 FCP Euro Apr-2020 Beru one-prong coolant temp sensor at intake manifold 008 542 32 17 20.61 20.61 1 FCP Euro Apr-2020 Beru four-prong coolant temp sensor at intake manifold 119 158 01 02 61.09 61.09 2 FCP Euro Apr-2020 Beru M119 distributor caps 119 158 01 88 45.37 45.37 2 FCP Euro Apr-2020 Bosch M119 distributor insulators 003 094 61 04 11.28 11.28 2 FCP Euro Apr-2020 Two Mann M119 air filters 007603 014104 0.05 0.05 3 FCP Euro Apr-2020 Three Elring coolant temp sensor aluminum washers 601 078 02 45 6.75 4.80 1 MB Annapolis Apr-2020 Crankcase air hose joint 117 078 02 81 3.70 2.64 7 MB Annapolis Apr-2020 Black rubber vacuum hose connector. Superseded from 117 078 01 81. 119 078 00 81 3.90 2.76 1 MB Annapolis Apr-2020 120 078 01 81 6.00 4.20 2 MB Annapolis Apr-2020 Superseded from 140 176 15 26. 117 140 02 65 9.00 6.00 8 MB Annapolis Apr-2020 Superseded from 117 140 02 65 64. 119 142 01 80 2.40 1.68 2 MB Annapolis Apr-2020 EGR pipe gasket at intake manifold 119 158 05 85 21.00 15.00 1 MB Annapolis Apr-2020 Black plastic surround for cam solenoids & distributors that mounts to front of cylinder head cover. 119 158 06 85 19.50 13.80 1 MB Annapolis Apr-2020 Black plastic surround for cam solenoids & distributors that mounts to front of cylinder head cover. Superseded from 119 158 03 85. 116 276 09 29 3.20 2.28 2 MB Annapolis Apr-2020 Plastic connector for crankcase vapor hoses 123 276 16 30 1.40 0.96 2 MB Annapolis Apr-2020 Plastic vacuum line 123 276 19 30 4.40 3.12 2 MB Annapolis Apr-2020 Plastic vacuum line 012 545 04 28 2.00 1.44 9 MB Annapolis Apr-2020 Plastic two-prong pin bushing housings 000 995 52 44 2.50 1.68 3 MB Annapolis Apr-2020 Drain hose clamp 000 995 58 44 64 1.50 1.08 1 MB Annapolis Apr-2020 Superseded from 000 995 58 44. 000 995 23 65 1.70 1.20 2 MB Annapolis Apr-2020 000 995 66 65 4.90 3.48 2 MB Annapolis Apr-2020 Dual cable clip. Superseded from 115 995 03 65. 001 997 81 52 4.00 2.88 1 MB Annapolis Apr-2020 Superseded from 014 997 87 82. 002 997 24 90 64 2.40 1.68 2 MB Annapolis Apr-2020 Zip tie. Superseded from 001 997 83 90. 003 997 72 90 1.50 1.08 2 MB Annapolis Apr-2020 040621 008200 2.50 1.80 1 MB Annapolis Apr-2020 040621 010200 3.40 2.40 1 MB Annapolis Apr-2020 040621 016200 4.00 2.88 1 MB Annapolis Apr-2020 119 200 03 85 NLA 49.92 1 eBay Apr-2020 MB water pump reservoir **NLA**. Purchased from eBay vendor. 119 158 02 31 32.46 32.46 2 eBay Apr-2020 Two Beru M119 distributor rotors. Purchased from eBay vendor. Difficult to find B07PFQSXK7 14.99 14.99 1 Amazon Apr-2020 Fuel injector rebuild kit for Bosch fuel injectors. FK3OV4-27 8.89 8.89 1 Amazon Apr-2020 3/4" drive, 27mm impact-rated socket for tightening M119 crankshaft bolt 204013 14.87 14.87 1 Amazon Apr-2020 10 feet of 1/4" Heatshield Products Hotrod Sleeve for underhood vacuum lines 204012 23.75 23.75 1 Amazon Apr-2020 10 feet of 1/2" Heatshield Products Hotrod Sleeve for underhood vacuum lines 24350 74.33 74.33 1 Home Depot Apr-2020 Tekton 3/4" drive torque wrench with high torque capacity 111 051 00 43 9.50 6.72 2 MB Annapolis May-2020 Cam solenoid armature. Supersedes 104 051 04 43. 119 051 00 77 109.00 78.00 2 MB Annapolis May-2020 Cam solenoid. Must be paired with armature 111 051 00 43. Supersedes 119 051 01 77. 119 201 01 80 2.40 1.68 1 MB Annapolis May-2020 Water pump top housing gasket. Supersedes 117 201 01 80. 119 202 02 22 2.40 1.68 1 MB Annapolis May-2020 Belt tensioner round plastic cover. Supersedes 119 202 01 22. 119 203 03 82 5.50 3.96 1 MB Annapolis May-2020 Large diameter short top coolant hose between water pump top housing and intake manifold. 129 505 07 86 27.00 19.20 1 MB Annapolis May-2020 1 meter, rubber seal between vertical side of radiator and radiator support. Supersedes 129 505 08 86. 124 830 54 96 35.00 25.20 1 MB Annapolis May-2020 Coolant hose between rear of intake manifold and heater core inlet. 124 830 76 96 59.00 42.00 1 MB Annapolis May-2020 Coolant hose between rear of block and coolant recirculation pump. Supersedes 124 832 64 93. 001 989 89 20 10 34.50 24.60 1 MB Annapolis May-2020 50mL tube of orange anaerobic ("koala claw") sealant. Newly supersedes to 002 989 47 20 10. 000 990 44 92 1.20 0.84 3 MB Annapolis May-2020 Small plastic rivets that attach rubber seal that protects top of condenser to upper radiator support. 000 995 92 42 6.50 4.68 3 MB Annapolis May-2020 Black rubber 1-inch hose mounting clamp for high-pressure SLS line to oilpan area. Supersedes 000000 001045. 015 997 23 48 64 5.00 2.40 1 MB Annapolis May-2020 Extra round rubber thermostat gasket (M117/M119). Supersedes 015 997 23 48. 001481 003031 2.10 1.46 4 MB Annapolis May-2020 Cam solenoid armature pins. 000 094 17 60 10.00 7.08 1 MB Annapolis May-2020 M119 airbox rubber gasket around top of MAF. 104 990 10 04 3.20 2.28 2 MB Annapolis May-2020 M119 cam solenoid armature stretch bolts. Supersedes 914008 005000. 916016 020201 4.40 3.12 3 MB Annapolis May-2020 Small gray 1/2-inch rubber cable clamps. 119 010 13 30 34.50 24.60 1 MB Naperville Oct-2018 M119 valve cover gasket, left. From parts stock. 119 010 14 30 35.00 25.20 1 MB Naperville Oct-2018 M119 valve cover gasket, right. From parts stock. 124 501 61 82 117.00 84.00 1 MB Naperville Oct-2018 Lower radiator hose to expansion tank. From parts stock. 220 997 16 52 60.00 42.60 1 MB Naperville Oct-2018 Transmission cooling hose, right side. From parts stock. 019 997 41 82 67.00 48.00 1 MB Naperville Oct-2018 Transmission cooling hose, left side. From parts stock. 007603 006106 1.90 1.32 18 MB Naperville Oct-2018 Copper valve cover washers. From parts stock (I have ~125 of them). 103 988 01 11 6.50 4.68 4 MB Naperville Jan-2017 Rubber intake box mounts. From parts stock. 1 Transmission pan gasket. From parts stock. 1 Elring transmission filter. From parts stock. 1 Hengst oil filter. From parts stock. 1 Mann power steering fluid filter. From parts stock. 1 Behr radiator 119 010 00 62 7.00 5.04 1 MB Annapolis May-2020 Brown plastic MB oil separator for cylinder head. 119 016 03 80 14.00 9.96 1 MB Annapolis May-2020 Rubber sealing gasket for brown timing chain top guide. 119 016 05 80 13.00 9.12 1 MB Annapolis May-2020 Rubber sealing gasket for brown timing chain top guide. 119 016 01 81 22.00 15.60 1 MB Annapolis May-2020 Rubber "funnel hose" for oil separator in cylinder head. 119 094 00 93 4.50 3.24 2 MB Annapolis May-2020 Spring clips for valve covers, to help position and retain airbox when mounted atop engine. 201 805 02 22 7.25 5.16 1 MB Annapolis May-2020 "Crows-foot" vacuum connector for vacuum distributor located above brake booster / fuse box area. 104 990 00 22 2.90 2.04 6 MB Annapolis May-2020 Small screws used for mounting cam adjuster to end of intake cam. Due to FSM error, probably redundant and not needed for job. 126 800 00 78 31.00 22.20 2 MB Annapolis May-2020 Three-way vacuum valve located above brake booster, to replace original vacuum valves. 000 995 74 44 4.50 3.24 2 MB Annapolis May-2020 Plastic clamp for lower wiring harness near alternator. 000 995 80 44 3.70 2.64 2 MB Annapolis May-2020 Smaller version of plastic clamp per above, for deep-parts stock purposes. 124 520 02 05 73.00 52.20 1 MB Annapolis May-2020 Passenger side cooling pipe for engine mount, for deep-parts stock purposes.
More parts added to the bottom of the list.
Part Number List Price Net Price I Paid Quantity Source Ordered Notes 119 158 05 85 21.00 15.00 1 MB Annapolis Apr-2020 Black plastic surround for cam solenoids & distributors that mounts to front of cylinder head cover. 119 158 06 85 19.50 13.80 1 MB Annapolis Apr-2020 Black plastic surround for cam solenoids & distributors that mounts to front of cylinder head cover. Superseded from 119 158 03 85
I’ve discovered that it usually is best to call around the dealerships even when the part is listed as discontinued. You never know there might just be one lying around somewhere. It’s time-consuming but doing so paid off for me.Not that I am aware of. If it is indeed NLA, it’s fairly recent. I saved my old ones. They were in decent condition.
I only got new ones because they were pretty cheap, and avaialble, and a "soft part" under the hood....so why not ?!?
Perhaps parts for people to harvest in the future from 140s and such in the wrecking yards, as long as they are in good condition.
There is no replacement. This is a fairly recent NLA that I was not aware of.Hi Gents. Is there a replacement for 119-158-06-85 perhaps? It seems to be NLA. The other side 05-85 is still available. Thanks.
More parts added to the bottom of the list.
Part Number List Price Net Price I Paid Quantity Source Ordered Notes 102 094 02 12 2.40 1.75 2 MB Annapolis Apr-2018 Crankcase breather hose joint 119 094 02 12 4.50 3.38 1 MB Annapolis Apr-2018 Crankcase breather hose joint 119 094 03 12 14.50 10.75 1 MB Annapolis Apr-2018 Crankcase breather hose joint 119 094 26 82 16.50 12.13 1 MB Annapolis Apr-2018 Crankcase breather elbow hose 119 094 27 82 19.50 14.38 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 28 82 40.00 30.00 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 31 82 28.50 21.25 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 40 82 20.00 15.00 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 44 82 28.50 21.25 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 55 82 33.50 25.00 1 MB Annapolis Apr-2018 Crankcase breather hose 119 094 71 82 33.50 25.00 1 MB Annapolis Apr-2018 Crankcase breather hose 000 987 27 27 10.50 7.88 2 MB Annapolis Apr-2018 Crankcase vapor hard plastic line. Superseded from 129 987 10 27 117 990 15 78 2.20 1.63 4 MB Annapolis Apr-2018 Crankcase breather hose joint 117 997 01 90 2.40 1.75 1 MB Annapolis Apr-2018 Breather hose clamp 126 997 06 90 0.70 0.50 1 MB Annapolis Apr-2018 Breather hose clamp
Thank you!!!! I don't know how I missed that on my gsheet!000-987-27-27 is the 8mm OD black Tecalan tubing from the intake manifold, to the purge ("MOT") valve near the EZL. It would be considered part of the replacement of all the PCV toobies. See engine group 14, subgroup 125, callout 32. Two meters are required (1.6m needed).
View attachment 136311
I did not mess with the charcoal filter. Didn’t see that I needed to. Even the purge valve was not in the original scope, until I determined that it was not working.May I ask --- in the bold above, where does part 000-987-27-27 (or superseded 129-987-10-27) come from?
I have identified all the other ones not in bold on diagram 119.974 - 14 - 030 as follows:
View attachment 136300
But I cannot find the applicability of this part number to the M119.974 in the context of the work @gerryvz that you did? 000-987-27-27 (or superseded 129-987-10-27)
I see the following diagram for the SL500:
View attachment 136301
And I see that the part is used for the charcoal filter for the 124.036, but I dont remember @gerryvz you touching the charcoal filter. Am I missing something obvious? Thanks.
View attachment 136302
It's the black larger-diameter Tecalan tubing. MB part number 000 987 27 27. You need 1600mm of this tubing. It should be ordered by the meter from MB, so you'll have to get 2 meters.Hi Gerry.
Do you have a part number for the vapour line that runs from the mot valve to the top of the engine ?
Thanks.
Great, thanks.It's the black larger-diameter Tecalan tubing. MB part number 000 987 27 27. You need 1600mm of this tubing. It should be ordered by the meter from MB, so you'll have to get 2 meters.
View attachment 137130
Hello Gerry,Today I spent about 4.5 hours out in the shop, while the forum's software restore from backup was ongoing. I'll talk about that in another thread.
Only had one photo from last night, before my camera died. That was the first photo of loosening the cam cover bolts, which are 5mm Allen-head bolts. I loosened a few on the driver's side, but loosened all of the bolts on the passenger side cam cover, and removed it from the car, as mentioned.
View attachment 102502
This morning, when I started working on the car, I focused on cleaning up the front cover for the passenger side cylinder head. Here is what it looked like after about 30 minutes' work -- as compared to the driver's side cover, which is still installed on the car. I used a Scotch Brite pad soaked in brake cleaner to scrub off all of the old anaerobic sealant, with a razor blade tip used to get in the corners where the pad couldn't reach. Chlorinated brake cleaner works well to soften up the dried-up anaerobic sealant. Anyhoo, here's what it looked like when I was done cleaning.
View attachment 102503
Before I started scrubbing the cylinder head cover in earnest, I pressed out the old (reddish-brown) camshaft seal from the cover using a 30mm impact socket. Worked well, and the seal came right out. Here is what the seal looked like, compared to the new (black) Elring seal that was soon to be pressed into the cylinder head cover.
View attachment 102504 View attachment 102505
The old camshaft seal was noticeably stiffer and more fossilized than the new seal, particularly along the sealing edge that touches the camshaft. I also could see small "micro cracks" in the surface of the seal, telling me that it was probably not far away from causing a major oil leak and in strong need of replacement.
Using the other (slightly smaller diameter) ratchet end of the same 30mm socket, and a hammer, I was able to drive in the new seal carefully, and evenly. I used small hammer blows in a pattern all around the seal, which worked well. I pressed the new seal about 0.5mm below the front edge of the cylinder head cover. However, seeing as the old seal was around 1.5 mm below the front edge, and the fact that there is plenty of room behind the area to press the seal further in, I think I am going to press the new seal about 2-2.5mm further in, so it rests in a different spot that is further back on the camshaft.
Here are a few photos of the pressed-in seal, showing from the back-side that there is plenty of room to press it in further. Again, I think I'm going to push it in about 2mm further.
View attachment 102506 View attachment 102507 View attachment 102508
Next are a couple of photos of the camshaft area and the front of the cylinder head, as I began cleaning them with a Scotch Brite pad and brake cleaner. The first photo shows things about 30% cleaned; the second photo shows things about 80% cleaned.
View attachment 102509 View attachment 102510
Next up, I turned my attention to the smog pump. After some deliberation in recent days, I decided to remove it for a few reasons:
1) To clean up the area underneath and behind it;
2) To replace all four of the smog pump hoses, which I'd ordered new ones of back in early 2018;
and 3) because I was curious as hell about the area !!
The first thing I did was to remove the sleeve containing the two vacuum lines from the vacuum valve behind the passenger-side front headlight to the intake manifold. These lines were fossilized, and one had actually cracked multiple times in the past! I threaded the sleeve with the vac lines through the smog pump bracket, and moved the lines out of the way. All of these will be replaced, of course, in due time.....
View attachment 102511 View attachment 102512 View attachment 102513 View attachment 102514
This freed the smog pump to be removed. It is held to the front of the cylinder head by three 13mm bolts. Two of the bolts are the same size, and the third (lower) bolt is much longer. I made short work of removing them, noting when they came out that they were encapsulated with anaerobic sealant to prevent oil leaks.
View attachment 102515 View attachment 102516 View attachment 102517
After removing the three bolts, the smog pump came free, as you can see.
View attachment 102518
This also freed up space and line of sight to remind me of all of the dirt and grime that I'd missed in my earlier cleaning behind and below the smog pump and alternator. Sigh....
View attachment 102519
With the smog pump removed, it was time to start removing the hoses that connect it to the engine. I was very glad I did. I rotated the smog pump about 90 degrees and after loosening a couple of spring clamps, the hoses started coming free.
View attachment 102520 View attachment 102521 View attachment 102522 View attachment 102523 View attachment 102524
Here are the hoses and valve assembly, as removed from the engine.
View attachment 102525 View attachment 102526 View attachment 102527
And it was time to break out my bags of new MB rubber smog pump hoses. No Harbor Fright smell here.....
View attachment 102528
Some comparison photos of the old and new smog pump hoses.
View attachment 102529 View attachment 102530 View attachment 102531 View attachment 102532 View attachment 102533
A couple of the hoses had to be persuaded off with the tip of a flat-blade screwdriver.
View attachment 102534
A photo of the smog pump hose carnage ... but I'm not done yet !!!
View attachment 102535
The short hose that connects the smog pump to the engine was stubborn, so I just turned the smog pump more until the hose ripped off.
View attachment 102536 View attachment 102537
Here's the new smog pump hose that connects the pump to the engine, loose and installed. Notice how all of the clamps and the valve are nicely cleaned in the next photos.
View attachment 102538 View attachment 102539 View attachment 102540 View attachment 102541
NOTE: I can not tell you enough how badly the smog pump hoses were fossilized. They were so hard that if I would have thrown one, it would have easily broken a window, or given someone a concussion if it hit them in the head. All of the smog pump hoses are cheap from MB, and TOTALLY WORTH replacing. Particularly if you are "in there" doing an alternator replacement, a smog pump replacement, or this type of top-end job. Again, this is easily $500 of ALL cars' $5,000 or $10,000 of deferred maintenance. Age and heat kill this rubber.
With all new smog pump hoses re-installed, it was time to break out the ... yes, you got it !! .... orange koala-claw MB anaerobic sealant goo. This is EXPENSIVE stuff, but contains as I said, koala-bear claws, Japanese-grown satsuma pulp, and other esoteric ingredients to warrant that expense.
View attachment 102542 View attachment 102543 View attachment 102544
It's imperative to coat the ends of the 13mm bolts that hold the smog pump bracket to the cylinder head with the orange koala-claw goo.
View attachment 102545
Then you can tighten the bolts, to re-attach the smog pump to the cylinder head.
View attachment 102546 View attachment 102547
Here's what things look like, re-assembled. It took me a LONG time to remove, clean, and then re-assemble everything, but it was totally worth it. Very happy.
View attachment 102548 View attachment 102549
Next, just for a change of pace, I turned my attention to the valve covers. I will be replacing the valve covers with ones I had powder-coated red a couple of years ago. Here's what they look like, side by side. I did install the valve cover gasket to this passenger-side cover. After that wind-down, I called it a day.
View attachment 102550View attachment 102551
I'm not a Gerry, nor do I play one on TV, but it's very likely your work is related to the leak. The air pump bracket bolts require anaerobic sealant (MB or aftermarket) on the bolts, or there will be a significant oil leak. See attached photo.I removed the smog pump the other day and put it back without using the MB anaerobic sealant and now I have a massive oil leak that is coming from somewhere near the smog pump... Do you think these two things are related?
There should be no oil leaking from the air hoses.I also don´t have any of the smog pump hoses attached because they all broke and I haven´t found (locally) replacement hoses yet. Can oil leak from here too?
I think you missed this discussion in the last year or two. Beru changed what they rebox. Previously it was OE Doduco, now it is reboxed Facet with a slightly different Beru part number so you can tell the difference. Deets are at this link. Since FCP has t hem on clearance, I'd suspect either they are going NLA, or FCP had too many warranty claims and they are dropping them from their catalog.Is this still true in 2022?
They appear to be red in FCP's listing vs black-colored Gerry installed
Is this more of a theory, or more of an empirical observation that if the new seal is installed in the same spot the old one was in (camshaft, crankshaft, etc) it will leak?Now, it's time to turn to the cylinder head cover itself. Examining it closely, I could see that the cam seal was inset into the cover about 2mm. I will try to take better photographs, but when I replace it with the new seal, I will only inset it around 0.5mm into the cover. This should give about a 1.5mm off-set from the original position of the seam against the camshaft.
![]()
![]()
It's somewhere in the FSM that in general, if replacing a radial seal that has been in the same position for a long period of time (say, 100kmi or more) then the new seal should be located 2-3mm away from the original location. Applies to crank seals front & rear, and these cam seals too. Crank/hub seals should be ~3mm different as discussed previously, cam might be ok with 1.5-2.0mm.Is this more of a theory, or more of an empirical observation that if the new seal is installed in the same spot the old one was in (camshaft, crankshaft, etc) it will leak?
What is the purpose of a pintle cap on tip of the injector?
A pintle cap is the small replaceable piece of the injector designed to protect the fragile pintle end of a fuel injector.What is the purpose of a pintle cap on tip of the injector?
During the installation/extraction phase? Otherwise it has bearing on the functionality of injector at all, right?A pintle cap is the small replaceable piece of the injector designed to protect the fragile pintle end of a fuel injector.
I suppose primarily during installation and extraction yes. But in any case make sure they are all present and in good condition.During the installation/extraction phase? Otherwise it has bearing on the functionality of injector at all, right?
No. I still get 16~17 MPG around town. My latest fillup on Sat shows 19.5 MPG for a brisk drive from NYC home a few weeks back. Can’t complain about that.@gerryvz, has your fuel economy changed after this project?
Understood, thanks. I was curious if the disconnected vacuum line to the air pump that you've discovered at initial disassembly stage and partially clogged EGR pipe had any effect on the fuel economyNo. I still get 16~17 MPG around town. My latest fillup on Sat shows 19.5 MPG for a brisk drive from NYC home a few weeks back. Can’t complain about that.
The air pump and EGR primarily affect emissions (at different points in the warmup/operating cycle) but should not affect overall fuel economy.Understood, thanks. I was curious if the disconnected vacuum line to the air pump that you've discovered at initial disassembly stage and partially clogged EGR pipe had any effect on the fuel economy
If you do replace the pintle caps, make sure that you enlarge the hole in the replacement caps to the same diameter as the original caps. I think I documented this in my HOW-TO ... I just used a drill press and a socket to hold the cap for drilling, after I measured the original caps' diameter using a drill bit.A pintle cap is the small replaceable piece of the injector designed to protect the fragile pintle end of a fuel injector.
I got my pintle caps from Master Injector in UK Gerry, I believe they make them directly and the fitment was exact same as OEM IIRC but will check in future as I have a M104 set to do this weekend actually!If you do replace the pintle caps, make sure that you enlarge the hole in the replacement caps to the same diameter as the original caps. I think I documented this in my HOW-TO ... I just used a drill press and a socket to hold the cap for drilling, after I measured the original caps' diameter using a drill bit.
The replacement caps' holes tend to be too small as they come.