TM 10-3950-206-12
4-37. Fan and Alternator Belt
a. Removal.
(1) Loosen alternator adjusting strap bolts (fig.
(2) Push alternator toward engine; slip
alternator belt off alternator pulley and remove from fan
and crankshaft pulleys.
b. Installation. Reverse procedures in a above.
c. Adjustment.
(1) Pull alternator away from engine until there
is tension on belt; temporarily tighten alternator adjusting
strap screw (fig. 4-23).
(2) Check belt deflection on the span between
fan pulley and engine crankshaft drive pulley. Change
position of alternator to allow 3/4 to 1 inch deflection of
belt with firm thumb pressure.
(3) Tighten alternator mounting bolts and nuts
and adjusting strap screw.
4-38. Water Pump
a. Removal.
(1) Remove radiator (para 4-35).
(2) Remove fan belt (para 4-37).
(3) Remove adjusting :strap pivot bolt (fig. 4-
(4) Remove four capscrews, lockwashers, and
the fan from fan pulley.
(5) Remove bolts and lockwashers that se-
cure water pump to cylinder block; remove water pump
and gasket.
ME 3950-206-12/4-22
1. Thermostat housing
2. Plug
3. Nut (2)
4. Lockwasher (2)
5. Thermostat
6. Adapter
7. Gasket
8. Stud (2)
Figure 4-22. Thermostat housing and related items,
exploded view.
pan. Heat water. The thermostat must open between
150 to 180F.
(3) Replace gasket, and if defective, replace thermostat.
c. Installation.
(1) Reverse procedures in a above.
(2) Fill cooling system with antifreeze (table 2-
Figure 4-23. Fan belt adjustment points and
replacement.
inhibitor.
4-30
