[MBZ] W123 TDC
Can someone provide a quick/dirty description of how to find/set TDC in a W123
('85 300TD)?
TIA.
G. M. Brown
Brevard, NC
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Re: [MBZ] W123 TDC
Isn't that the timing mark on the cam? Or watch the valves/cam lobes?
--R
On 12/28/2010 2:53 PM, glenn brown wrote:
Can someone provide a quick/dirty description of how to find/set TDC in a W123
('85 300TD)?
TIA.
G. M. Brown
Brevard, NC
___
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
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Re: [MBZ] W123 TDC
Assuming you can't find, or don't trust the mark on the crank, and
its pointer...
Remove #1 Injector line, cap injector and pump
remove injector
remove prechamber ring (special tool)
Remove prechamber (Special slidehammer puller)
Now the official way is to use a dial indicator bolted to the head.
I never had that, so I never did that. My BMW R75/5 came with a
small rod for finding/confirming TDC. I use it. It is about 3/16
dia and 8 long with the ends rounded.
I watch the cam as you slowly rotate the engine in the proper
direction After the intake lobe closes the intake valve, turn a
little further, then stick the rod in the cyl as you rotate. It
helps to have a helper hold the rod. At the instant the rod stops
rising, mark the crankshaft pulley at the pointer. Rotate 2-3
degrees more, until the rod starts to descend, and mark the crank
pulley at the pointer again. After you have done this 3-4 times and
corrected for any tardiness in marking the crank pulley, TDC should
be in the middle of the marks.
This procedure is in the OM621 book, and I htink it is in the
616/617 book also, with the part numbers of all the special tools.
If you want quicker to confirm the timing mark is reasonably near,
pull a GP and fir a 1/8 hose nipple to an old GP body. Put 3' or so
of 1/8 vacuum hose on the nipple after it is installed in #1 Hold
the other end near your ear while you turn the engine. Same
process Mark the crank where it stops blowing in your ear, and
again when you hear it start to draw air in. TDC roughly in the
middle between the marks. Not as accurate.
Can someone provide a quick/dirty description of how to find/set TDC
in a W123 ('85 300TD)?
TIA.
G. M. Brown
Brevard, NC
___
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
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Re: [MBZ] W123 TDC
look at the crank?
On 12/28/2010 1:53 PM, glenn brown wrote:
Can someone provide a quick/dirty description of how to find/set TDC in a W123
('85 300TD)?
TIA.
G. M. Brown
Brevard, NC
___
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
--
Kaleb C. Striplin/Claremore, OK
95 E300, 94 S500, 92 500SEL, 92 300SD, 92 300E 4Matic,
91 350SDL, 91 300D, 89 560SEL, 87 300SDL x2, 85 380SE 5.0 Euro,
85 190D, 84 190D, 84 300D euro manny, 76 240D, 76 300D,
http://www.okiebenz.com
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