TM 10-3950-206-12
ME 3950-206-12/4-21
1.
Fan Guard
5.
Cap
9. Lockwasher (6)
2.
Screw (5)
6.
Radiator
10. Nut (6)
3.
Clamp (4)
7.
Washer (6)
11. Draincock
4.
Hose (2)
8.
Capscrew (6)
12. Nut (5)
Figure 4-21. Fan guard, radiator and hoses, exploded view.
with antifreeze (table 2-1) containing a rust inhibitor or
(3) Remove by-pass tube assembly from
with water and rust inhibitor.
thermostat housing and water pump.
(2) Run engine until it reaches operating
(4) Remove two nuts (3), lockwashers (4) and
temperature. Check cooling system for leaks. Run
thermostat housing (1).
crane a few feet forward and backward under its own
(5) Lift out thermostat (5) and adapter (6).
power. Check transmission oil level; add oil if necessary.
Discard gasket (7).
b. Inspection and Testing.
Check oil level in engine; add oil as required.
(1) Inspect thermostat for cracks, distortion,
4-36. Thermostat
scale or dirt deposits, or other physical dam- age.
a. Removal.
(2) Suspend thermostat in a pan of water on a
(1) Drain radiator.
stove.
Place a thermometer capable of reading
(2) Loosen clamp (3, fig. 4-21) and remove
temperatures up to the boiling point in the
hose (4) from thermostat housing (1, fig. 4-22).
4-29
