SECTION IV
PREVENTIVE MAINTENANCE
'E' Maintenance Checks
Perform "A, B, C, & D" Maintenance Checks each time
CLEAN HYDRAULIC TANK BREATHER
the following check is performed.
Remove the hydraulic tank breather and wash it in fuel
oil. Dry the breather with compressed air. This cleaning
CLEAN CRANKCASE BREATHER
period may be reduced or lengthened according to the
Remove the crankcase breather from the engine every
severity of service.
1000 hours and wash the steel mesh pad in fuel oil and
dry it with compressed air. This cleaning period may be
CHANGE AXLE OIL
reduced or lengthened according to the severity of
The oil in the rear axles should be changed twice yearly
service.
(spring and fall). Each time the oil is changed, the
magnetic drain plug must be cleaned, to remove any
CLEAN AND INSPECT BLOWER SCREEN
accumulated material, before it is replaced.
Inspect the blower screen and gasket assembly,
between the blower and air inlet housing, every 1,000
NOTE
hours and, if necessary, clean the screen in fuel oil. Dry
The axle manufacturer recommends a
the screen with compressed air. Reinstall the screen
drain plug with a magnetic element
and gasket assembly with the screen side of the
capable of picking up approximately
assembly toward the blower.
2 pounds of low carbon steel.
CLEAN COOLING SYSTEM
To change the axle oil, proceed as follows (see Figure 4-
Clean the cooling system using a good radiator cleaning
19): 1. Drive the machine to warm the oil in the axles to
compound in accordance with the instruction on the
normal operating temperature.
container. After the cleaning operation, rinse the cooling
system thoroughly with fresh water; then fill the system
2. Remove the drain plug and drain the oil into a suitable
with soft water, adding a good grade of rust inhibitor or
container. Clean the drain plug.
high boiling point type antifreeze as specified in the
Engine Manufacturer's Manual. With the use of a proper
3. Install the drain plug and add oil of the type specified
antifreeze or rust inhibitor, this interval may be
in Section III, until the oil reaches the bottom of the oil
lengthened until, normally, this cleaning is done only in
level plug opening. Replace the filler-level plug.
the spring or fall. The length of this interval will,
however, depend upon an inspection for rust or other
deposits on the internal walls of the cooling system.
When a thorough cleaning of the cooling system is
required, it should be reverse flushed.
CLEAN EXTERIOR OF RADIATOR
Inspect the exterior of the radiator core and, if
necessary, clean it with a quality degreasing solvent and
dry it with compressed air. It may be necessary to clean
the radiator more frequently if the machine is being
operated in extremely dusty or dirty areas.
Figure 4-19. Changing Rear Axle Oil
1-4-17
