Exhaust Muffler and Piping

d. Cleaning and Inspection.

(1) Clean the air cleaner body with a cloth

dampened with a cleaning solvent. Blow out dust and

dirt with a stream of clean, dry, low pressure (25 psi

maximum) compressed air. Direct the air stream in a

direction that is the reverse of the normal air flow.

(2) Blow out the air cleaner-to-carburetor air

hose with compressed air. If necessary, flush it out with

a solvent that is not injurious to the rubber.

(3) Clean all remaining parts with a cleaning

solvent; dry thoroughly.

(4) Inspect the air cleaner body for cracks,

severe dents, distortion, and other damage. Replace

the air cleaner if damaged.

(5) Inspect all other parts for cracks,

distortion, damaged threads or other damage; replace

damaged parts.

e. Reassembly and Installation. Reassemble and

install the air cleaner in the reverse order of removal.

4-26. Exhaust Muffler and Piping

a. General. The exhaust system conducts the

exhaust gases from the engine through an exhaust pipe,

muffler, tailpipe and then discharges them into the

atmosphere. The muffler dampens the exhaust noises

by directing the gas flow through a series of baffles.

b. Removal and Disassembly. (fig. 4-14.)

(1) Remove the driver's seat and left hand

engine side panel.

(2) Remove the radiator grille by removing

the capscrews, lockwashers, and washers securing the

grille to the truck frame. (para. 4-67.)

Figure 4-14. Exhaust system.

4-21