Figure 3-48. Flywheel housing bolt, tightening
sequence (operation 2).
Figure 3-47. Flywheel housing bolt, tightening
sequence (operation 1).
Section IV. OIL PAN, OIL PUMP SCREEN, INLET PIPE,
CONNECTING ROD, PISTON AND OIL PRESSURE REGULATOR
(1) Remove the drain plug and drain the
The oil pan houses the lower engine components
and also contains lubricating oil for the engine. The
(2) Refer to figure 3-1 and remove the oil pan.
oil pump screen is secured to the main bearing cap
with two bolts and lockwashers. The inlet pipe is
(1) Inspect the oil pan for cracks, excessive
secured to the oil pump. The pistons are secured to
dents or other damage.
the connecting rods with a wrist pin and connecting
( 2 ) Inspect attaching hardware for damage.
rods and bearings are mounted around the
( 3 ) Remove all gasket material from gasket
crankshaft. The pressure regulator valve maintains
area and inspect for damage or bends.
a stabilized lubricating oil pressure regardless of oil
(1) Affix a new gasket to the oil pan.
3-24. Oil Pan
(2) Refer to figure 3-1 and install the oil pan.
a. General. The oil pan is secured to the bottom
(3) Refer to the current lubrication order and
side of the engine block by 22 bolts and washers. A
service the engine lubrication system.
drain plug is located in the bottom of the oil pan for
3-25. Oil Pump Screen and Inlet Pipe
draining engine oil, at oil change intervals or for oil
a. General. As the rotors revolve, a vacuum is
pan removal. A one-piece oil pan gasket is used.