8. Reconnect all hoses and unions.
(Every 1000 Operating Hours)
Radiator: Twice a year, drain flush and refill
9. Refill reservoir to indicated FULL mark on dip-
cooling system. Add permanent anti-freeze accord-
s t i c k , Reinsert dipstick and secure reservoir
ing to manufacturer's instructions when air tem-
c a p . Refer to Chassis Lubrication Chart for
perature is 32oF. or lower, or when there is danger
recommended fluids.
of water freezing in the system, Always use a hy-
drometer to check freezing point of solution when
R e f e r to Specifications and Service Data for
it is at operating temperature.
capacity.
Check for evidence of foreign material block-
tion. Start engine and run it at idle speed for
ing radiator core and blow out with compressed
a few minutes.
air.
11. Place boom lever in RAISE position to pump oil
Refer to Specifications and Service Data for
into boom cylinders. Then remove blocks or
capacity.
chains securing boom and bucket. Do not stand.
or work under boom and bucket after remov-
H y d r a u l i c Reservoir: Drain, clean and refill
ing blocks or chains.
hydraulic oil system every 1000 hours of operation
or oftener if required. When operating under se-
12. Operate unit by raising, lowering, dumping,
vere dusty and dirty conditions, clean the system
and closing bucket until oil ceases to foam, This
more often to prevent excessive wear or premature
will "bleed" the system, forcing trapped air to
failure of valve, pump, or cylinder parts.
escape through reservoir drain hose.
13. After oil has ceased to aerate, add oil to reser-
1. Always drain system after working machine,
voir to bring level to indicated FULL mark on
and while oil is at operating temperature. Hot
dipstick, This will replace oil drawn into cylin-
oil flows more freely and carries more foreign
material with it.
ders and hoses.
14. Check all connections for leaks and make cer-
2. To thoroughly drain cylinders and hoses, raise
tain reservoir cap is properly secured.
b o o m and bucket to full height and extend
bucket cylinders. Securely block or chain boom
NEVER UNDER ANY CIRCUMSTANCES USE ANY
and bucket in raised position. Then shut down
F L U S H I N G OIL OR COMPOUNDS FOR CLEANING THE
engine.
SYSTEM.
3. Loosen reservoir cap slowly to relieve pressure
Transmission Sump and Screen: When serv-
in hydraulic reservoir.
icing transmission at every 1000 operating hours
r e m o v e transmission sump and screen. Wash in
4. Remove drain plug in hand hole cover in bot-
solvent, dry and reinstall using new gaskets.
tom of reservoir and drain reservoir.
Front Axle Differential: Drain differential
5. Disconnect boom and bucket cylinder hoses at
every 1000 operating hours. Refill with lubricant
lowest points to drain cylinders.
recommended on Drive Line Lubrication Chart un-
6. Remove and clean reservoir suction filter as-
til level with plug opening at center of axle assem-
sembly as specified under "250 Maintenance
bly.
O p e r a t i o n s " . Replace reservoir return filter
Refer to Specifications and Service Data for
assembly.
capacity.
7. Remove hand hole cover from bottom of reser-
F r o n t Axle Planetary Hubs: Drain planetary
voir and clean all foreign material from bot-
hubs every 1000 operating hours; then rotate wheel
tom of tank. Remove magnet and clean thoro-
until arrow on sun gear thrust cap points down-
ughly. Reinstall magnet; then reinstall hand
ward.
hole cover and drain plug securely.
[ 40-06-1 ]
