TM 10-3950-206-12
b. Cleaning and Inspection.
or other defects.
(4) Replace gasket; replace water pump if
(1) Clean exterior of water pump with a cloth
defective.
dampened in an approved cleaning solvent.
c. Installation. Install in reverse procedures of a.
(2) Inspect water pump for cracks, evidence of
above.
leaks, shaft play, or other defects.
(3) Inspect pulley for cracks, wear, distortion,
Section X. EXHAUST SYSTEM MAINTENANCE
1. Clamp
4-39. Exhaust Piping and Muffler
2. Lockwasher
a. Removal.
3. Capscrew
(1) Remove cover plate (fig. 4-18A).
4. Stud (4)
5. Gasket
6. Flange
7. Lockwasher (4)
8. Nut (4)
9. Elbow (2)
10. Nipple
11. Nipple
12. Muffler
13. Tail pipe
Figure 4-24 - Continued.
(2) Remove capscrew (3, fig. 4-24), lock-
washer (2), and clamp (1).
(3) Remove tail pipe (13) from muffler (12).
(4) Remove muffler from exhaust nipple (11)
and separate nipple from elbow (9); remove elbow.
(5) Remove nipple (10) from elbow (9).
Remove elbow from exhaust flange (6).
(6) Remove nuts (8) and lockwashers (7) that
secure exhaust flange (6) to manifold studs (4); remove
exhaust flange and gasket (5).
b. Cleaning and Inspection.
(1) Clean muffler and exhaust pipes with a
wire brush.
(2) Inspect muffler for corrosion, cracks, dents,
separated seams, or other damage.
(3) Inspect exhaust pipes and flange for
Figure 4-24. Muffler and exhaust piping, exploded view.
corrosion, cracks, dents, distortion, or other dam- age.
(4) Replace damaged or defective parts.
c. Installation. Reverse procedures in a. above.
Section XI. FUEL SYSTEM MAINTENANCE
pipe. Exhaust noise of the running engine is controlled
4-40. General
by the muffler. The governor limits maximum speed of
The fuel system consists of fuel tank, fuel filter, lines, fuel
engine.
pump, carburetor, accelerator pedal and linkage,
4-41. Air Cleaner
governor, air cleaner, and pollution control valve. Fuel is
a. Removal.
drawn from the fuel tank, through the fuel filter, by the
fuel pump. From the fuel pump, fuel goes to the
(1) Loosen screw on clamp of precleaner cap
carburetor where it is combined with air to form a mixture
(4, fig. 4-25) and remove cap.
that is combustible in the engine. Exhaust gases from
the engine are carried to the rear of crane by the exhaust
4-31
