Section XVI. EXHAUST SYSTEM

TM 10-3930-630-12

d. Installation.

(5)

Remove adapter ring (6) and thermostat

(5).

(1) Clean elbow mounting surface on cylinder

Test.

head. Remove all rust and gasket material.

(2) Install thermostat (5, fig. 4-54) and adapter

(1) Attach a wire or other means of suspension

ring (6) in outlet elbow (3).

and submerge thermostat in a container of clean water

(3) Use a new gasket (4) and install assembled

(2) Heat water and stir with an accurate

elbow on cylinder head. Secure elbow with nuts (1) and

thermometer. Check water temperature.

lock washers (2).

(3) As the water temperature approaches 180

(4) Connect radiator upper hose (fig. 4-52) to

F (82 C) observe the thermostat. If the thermostat

outlet elbow and secure hose with clamp.

does not start to open at 180 F (82 C) to 200 F (93

(5) Close drain valves and fill radiator with

C) or if it opens well below 180 F (82 C), thermostat

coolant (para 3-12).

must be replaced.

(6) Close side panels and lower seat into

position.

Section XVI. EXHAUST SYSTEM

4-71.

General

(2) If truck has been operating allow sufficient

time to elapse to allow the muffler and pipes to cool.

The exhaust system on the truck consists of a exhaust

(3) Remove nuts (1, fig. 4-55) and disconnect

pipe leading from the manifold to the muffler and a tail

exhaust pipe (3) from manifold. Remove gasket (4)

pipe leading out the rear of the truck The muffler is

Loosen clamp (2) and remove exhaust pipe from truck.

mounted on the lower left side of the truck frame

4-72.

Muffler and Pipes

a. Removal

(1) Open left side panel and lift seat into an

upright position.

TA034830

Nut

Clamp

Exhaust pipe

Tail pipe

Gasket

Tail pipe

Screw

Nut

Lock washer

Washer

Grommet

Nut

Muffler

Support

Figure 4-55. Exhaust system, exploded view

4-65