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Old 11-24-2003, 01:17 PM
pjl pjl is offline
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Join Date: Nov 2003
Location: Kelowna, BC
Posts: 21
om 617a help

Hi, just need a little advice on reassembling my om617a (from an early 80's 300 turbo diesel). I can't find any starting point for locating the injection pump sprocket relative to TDC when installing a new timing chain. I had difficulty getting the chain out and in a dumbass move rotated the sprocket and didn't punch a ref. mark. Also, is it extremely difficult to rebearing and seal the turbo? Apperantly the engine (allthough low miles) was run upside down starving the crank(replaced) and turbo(rebearing due to excessive radial play?). I can't detect any other damage. I am swapping it into my Unimog, and my experience with diesels is weak. Any other thoughts and advice is appreciated.
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Old 11-24-2003, 01:57 PM
engatwork's Avatar
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 12,001
here we go

do a "timing injection pump" search on here. You will need to remove the injection pump. Once you do it you will be amazed at how simple it is.
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Old 11-26-2003, 04:07 AM
pjl pjl is offline
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Join Date: Nov 2003
Location: Kelowna, BC
Posts: 21

Any ideas on redoing the turbo? I can move the compressor over far enough to bind on the housing approx .010"-.020" using the thumb dial gauge.
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Old 11-26-2003, 07:38 PM
jbaj007's Avatar
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Join Date: Jun 2001
Location: Santa Monica, CA
Posts: 2,053

Good places to start.
The Golden Rule

1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)
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