DETROIT DIESEL 53
The oil pan may be made of steel. cast iron or cast
aluminum. A shallow or deep sump type oil pan is
used, depending upon the particular engine applica-
tion. A one-piece oil pan gasket is used with stamped
Removing and Installing Oil Pan
On some engine applications, it may he 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
The procedure for removing the oil pan without taking
the engine out and after taking the engine out of the
Fig. 1 - Typical oil Pan
unit will vary. However. the following will generally
4. Clean the oil pan with a suitable solvent and dry it
with compressed air.
1. Remove the drain plug and drain the engine
5. Inspect a cast oil pan for porosity or cracks. Check a
stamped oil pan for large dents or breaks in the metal
2. Detach the oil pan; take precautions to avoid
which may necessitate its repair or replacement. Check
damaging the oil pump inlet pipe and screen.
for misaligned flanges or raised surfaces surrounding
the bolt holes by placing the pan on a surface plate or
NOTE: Stamped oil pans used on some marine
other large flat surface.
engines have a layer of lead or cadmium
beneath the paint to protect the pans against
6. When replacing the pan, use a new gasket and
the salt water atmosphere encountered in some
tighten the bolts evenly to avoid damaging the gasket
marine applications. If this coating is scuffed or
or springing the pan.
broken unknowingly, corrosion or electrolysis
may result. Electrolysis in the form of small
holes will eat through the pan at the scuffed
area. Therefore, do not rest, slide or rock the
engine on its oil pan when removing it. Every
precaution should be taken before installation
to prevent nicks and scratches on stamped
marine oil pans. Also exercise care when
performing engine repairs to avoid scratching
8. Install and tighten the oil drain plug. Tighten the
the outer surface of the oil pan.
plug (with nylon washer) to 25-35 lb-ft torque.
Replenish the lubricating oil supply and. after the
engine is started, check for leaks.
3. Remove the oil pan gasket completely
April. 1971 SEC. 4.7 Page 1