Section IV. OIL PAN, OIL PUMP SCREEN, INLET PIPE, CONNECTING ROD, PISTON AND OIL PRESSURE REGULATOR

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

b. Removal.

3-23. General

(1) Remove the drain plug and drain the

The oil pan houses the lower engine components

engine oil.

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

c. Inspection.

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

d. Installation.

temperature.

(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.