TM 5-3810-206-35
0.0015 to 0.0035 inches. Replace a worn bearing when
dimension setting is 4.2675 0.0020 inches (off engine)
clearance is in excess of 0.004 inch.
with pistons at TDC (top dead center). If a reading less
(10) Inspect pump lifters and spacers for wear or
than 4.2655 inches (off engine) is obtained, install a
damage. Replace worn or defective lifters and spacers.
spacer with 0.004 inch greater thickness. If a reading in
Fuel injection timing is 11 BTC (before top center).
excess of 4.2695 inches (off engine) is obtained, install a
Using a 2M5219 gage with a4" to 5" rod, timing
spacer with 0.004 inch less thickness.
Section VIII. COOLING SYSTEM
(2) Radiators are of conventional design; are
3-21.
General
connected to coolant outlet manifold on engine by the
a. All Engines.
inlet hose and line assembly, and to the water pump by
(1) Radiators are mounted at front of engine on
the outlet hose. The fan cools the large
left side of revolving frame.
KEY to fig. 3-29:
1
Screw (88 rqr)
7
Hose
13
Pad (2 rqr)
19
Lockwasher
2
Lockwasher (88 rqr)
8
Side member, R.H.
14
Screw (2 rqr)
20
Nut
3
Cap
9
Clip
15
Lockwasher (2 rqr)
21
Side member, L.H.
4
Tank, top
10
Lockwasher, IET
16
Drain cock
22
Nut
5
Tube
11
Screw
17
Gasket (2 rqr)
23
Stud
6
Core washer
12
Tank, bottom
Figure 3-29. Radiator for engine model 687C-18-ES, exploded view.
3-37
