Figure 3-28. Fuel injection pump lifter, camshaft, fuel rack, and housing, exploded view.
Section VIII. COOLING SYSTEM
b. Winterized Models.
The winterized models
3-21. General
(either engine installed) have lines directing coolant
through the oil pan, with a circulating pump installed on
a. All Engines.
manifold to circulate heated coolant through pan to warm
and thin crankcase oil for proper engine lubrication.
(1) Radiators are mounted at front of engine
on left side of revolving frame.
c. On Engine Model 687C-18-ES. The water pump
(2) Radiators are of conventional design; are
is installed on front cover of, and is driven by, the front
connected to coolant outlet manifold on engine by the
blower.
inlet hose and line assembly, and to the water pump by
the outlet hose. The fan cools the large radiator core
d. On Engine Model D333TA. The water pump is
surface and carries excess heat away from the engine.
installed on rear of the timing gear housing.
3-37
