DETROIT DIESEL 53
The oil pan is made of cast iron, A four-piece gasket is
used with the cast oil pans.
Removing and Installing Oil Pan
I may be possible to remove the oil pan without
removing the engine. It is recommended that if the
engine is to be taken out of the unit, the oil pan be left in
place until the engine is removed.
The procedure for removing the oil pan without taking
the engine out and after taking the engine out of the unit
will vary. However, the following will generally apply.
Remove the drain plug and drain the engine
Fig. 1. Typical Oil Pan
Detach the oil pan; take precautions to avoid
Clean the oil pan with a suitable solvent and dry
damaging the oil pump inlet pipe and screen.
it with compressed air.
Remove the oil pan gasket completely.
Inspect a cast oil pan for porosity or cracks.
When replacing the pan, use a new gasket and
tighten the bolts evenly to avoid damaging the gasket or
springing the pan.
Install and tighten the oil drain plug. Tighten
the plug (with nylon washer) to 25-35 lb-ft torque.
Replenish the lubricating oil supply and, after the engine
is started, check for leaks.
1971 General Motors Corp.
SEC. 4.7 Page 1