Thermostat - TM-10-3930-630-120092

TM 10-3930-630-12

coolant outlet elbow on the cylinder head.

The

(3)

Install grille (para 4-28).

thermostat retains the coolant in the engine, bypassing it

(4)

Remove caps or fittings in bottom tank of

before it reaches the radiator. This allows the coolant to

radiator

reach operating temperature faster for more efficient

(5) Connect upper and lower hoses (fig. 453) to

engine operation.

When operating temperature is

radiator.

reached, thermostat opens and allows coolant to

(6) Close valve at bottom of radiator. Fill

circulate through radiator.

radiator with coolant (para 3-12)

(7) Check and add oil to transmission if

b. Removal

necessary (para 3-16).

(8) Operate engine and check radiator and

(1) Open side panels and lift and tilt seat

hoses for leaks. Shutoff engine.

forward.

(9) Close side panels and lower seat into

(2) Drain radiator and engine block (para 4-

position.

68).

(3) Loosen clamp and disconnect radiator

4-70.

Thermostat

upper

hose (fig. 4-2) from thermostat housing.

a. General. The thermostat is installed in the

(4) Remove nuts (1, fig.

4-54) and lock

washers (2) and remove water output elbow (3) from

cylinder head. Remove gasket (4).

TA034829

1.Nut

2. Lockwasher

3.Outlet

4. Gasket

5. Thermostat

6. Adapter ring

7. Stud

Figure 4-54. Thermostat, removal and installation.

4-64