1
Crankshaft
9
Snap ring
17
Bearing cone
25
Gasket
2
Connecting rod
10
Bushing
18
Bearing cup
26
Main bearing plate
3
Bearing half
11
Bolt
19
Crank shaft gear
27
Lockwasher
4
Connecting rod cap
12
Compression ring
20
Oil slinger
28
Capscrew
5
Nut
13
Scraper ring
21
Pin
29
Bearing cone
6
Pal nut
14
Oil ring
22
Gasket
30
Bearing cup
7
Piston
15
Key, gear
23
Shim
31
Packing
8
Piston pin
16
Key, flywheel
24
Shim
32
Seal
Figure 40. Crankshaft assembly.
b. Installation.
(1) Position a new gasket (15) on the oil pump. Position the cover (13) and secure with lockwashers (5)
and machine screws (14).
(2) Position the screen (12) on the cover and secure with lockwasher (11) and machine screw (10).
(3) Install the oil pump and oil pan (para. 133).
135. Piston, Rings, Pins, Rods and
Bearing Assembly
a. Description. The piston assembly consists of a piston that has four rings: two compression rings in the top
groove, the scraper ring in the center, and an oil ring on the bottom. The piston is made of cast iron. The
connecting rods and caps are drop-forged and have removable, shell-type bearings. The piston pins connect
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