SECTION 4
MAINTENANCE
4 - 6 6 . Located beneath the removable floor
plate is a water system strainer. Located inside
o f the tank (use access cover) is the sump
strainer. These strainers prevent clogging of
the water spray nozzles by water contaminants.
T o keep the water spray system in proper
operation, the strainers should be cleaned at
intervals dependent upon the water conditions.
C l e a n the strainers with water, directing the
flow into the center of the strainer.
FIGURE 4-8. RELIEF VALVE ASSEMBLY.
f. Wash all parts in solvent and blow them
dry with air.
g. Install the relief valve.
FIGURE 4-9. WATER SYSTEM STRAINER.
h. Smear the o-ring with oil or grease and
4-67. TIRE INFLATION SYSTEM.
install it on the container.
4-68. Every 500 operating hours clean or
I . Insert into the shell in this order, the
replace governor filters. To clean, use a
spring, gasket, washer and retainers. Insert the
cleaning solvent known to have no detrimental
new filter element.
effect on metal or rubber.
j . Install the shell assembly with the stud
4 - 6 9 . Every 1000 operating hours remove
and washer.
compressor discharge valve cap nuts and check
4-64. STEERING HYDRAULIC TANK.
f o r excessive carbon deposits. Check the
discharge line for carbon. If excessive carbon
a. Inspect all hoses, fittings and tubes.
is found in either check, the cylinder head or
discharge line should be cleaned or replaced.
b. Replace hoses or tubing that are frayed,
cracked, cross-threaded, or otherwise damaged.
4-70. Every 3,000 operating hours disassemble
g o v e r n o r and clean a n d inspect all parts.
Check hoses for softness and peeling or
flaking on the inside.
Replace broken o r badly worn parts. Wipe
rubber parts dry.
c . If the tank was removed for welding,
clean all new welds completely. Remove any
4-71. Every 3,000 operating hours disassemble
scale, slack or other foreign material from the
the compressor. Clean and inspect all parts
inside of the hydraulic tank.
thoroughly. Repair or replace all worn or
damaged parts, or replace the compressor with
CAUTION: Any foreign particles in the tank or
a factory reconditioned, repair-exchange unit.
loose material in the hoses may be
drawn into the pump and the
s t e e r i n g control unit before being
CAUTION: If it is necessary to drain the engine
filtered.
cooling system to prevent damage
from freezing, the compressor must
4-65. WATER SPRAY SYSTEM (Gravity
be drained. Drain the block and the
System Shown - see figure 4-9).
head.
4-11.