1
Ring, compression
1
Pin
2
Hub
14
Nut (8 rqr)
S
Damper
15
Stud (6 rqr)
4
Gasket
16
Nut
5
Plug
17
Lockwasher
6
Cover
18
Support
7
Flatwashers (21 rqr)
19
Capscrew
8
Lockwashers (23 rqr)
20
Seal
9
Capscrew (9 rqr)
21
Capscrew
10
Capscrew (10 rqr)
22
Screw (6 rqr)
11
Gasket
23
Washer (6 rqr)
12
Flange
24
Pin (2 rqr)
Figure 3-53. Front cover, support, and damper exploded view.
(4) Install by reversing the procedures in
3-49. Vibration Damper (Engine Model 687C 18ES)
steps (1) through (8) above.
a. Removal and Installation.
b. Cleaning, Inspection, and Repair.
(1) Remove front cover (para 3-48).
(2) Remove capscrews (22, fig. 3-4) and
(1) Clean all parts and dry thoroughly before
flatwashers (23), then remove damper (3) off of
inspection or reassembly.
crankshaft.
(2) Inspect ring, hub, and damper for breaks,
(3) Remove ring (1) from damper (3), then
cracks, or defective threaded surface Inspect mounting
remove damper hub (2). Remove two dowels (24) from
hardware for burs, stripped threads or other damage.
ring (1).
(3) Repair by replacing all components that
are damaged or defective.
Section XIV. CAMSHAFT
b. Engine Model D333TA. The camshaft is located
3-50. General
on the upper left side of cylinder block, and is driven by
timing gear train at front end of engine. Camshaft is
a. Engine Model 687C-18-ES.
The camshaft
positioned by a thrustwasher secured to cylinder block.
assembly consists of a shaft and gear, with thrustwasher
Cams operating inlet and exhaust valve mechanism are
forged integrally with shaft. The camshaft and gear can
The camshaft is driven by gear train at flywheel end of
engine, and operates the exhaust valve mechanism.
AGO 20051A
3-64
