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Old 04-22-2004, 11:34 AM
TomJ TomJ is offline
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Join Date: Sep 2003
Location: Back in Colorado for now
Posts: 1,313
Originally posted by Tymbrymi
Its been over a year since my last attempt, but I believe the cover of the piston style has the proper indentations or lack thereof to prevent you from putting the check valves in wrong. I also took pictures as I did the job, and I put mine back in the same way they came out!

'79 300SD
That's correct. The cover keeps you from installing any other way than the right way.

Just rebuilt two of these units and ended up using the old seals for the three internal check valves. Used a "seal swell" stuff on them and then hi-temp gasket sealer to make it permanent.
1984 300D Turbo - 4-speed manual conversion, mid-level resto

1983 300D - parts car

1979 300TD Auto - Parts car.

1985 300D Auto - Wrecked/Parts.


"If you don't know where you are going, any road will get you there". Lewis Carrol
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