Case 2050M, Operator'S Manual, Page: 238 / 286

7 - MAINTENANCE
Reservoir suction screen
WARNING
Burn hazard!
Before performing any service on the hydraulic system, you must allow it to cool. Hydraulic fluid
temperature should not exceed 40 °C (104 °F).
Failure to comply could result in death or serious injury.
W0241A
Clean the reservoir suction screens when the hour meter registers 2000 hours and every 2000 hours thereafter. Clean
more often if conditions so require. Clean the reservoir suction screens in conjunction with replacing the hydraulic/
hydrostatic drive oil and filters.
Prior operation:
Keep all unauthorized personnel clear of the area. Park the machine on level ground, in neutral with the parking
brake applied, and the attachment lowered to the ground. Make sure that all residual pressure is relieved from circuits
before beginning maintenance.
1. Locate the suction screens on the front of the hydraulic
oil tank by opening the rear access door.
2. After draining the oil from the hydraulic reservoir,
loosed the T-bolt hose clamps and separate the hy-
draulic hoses from the suction screen assembly hose
barbs.
3. Remove the charge pump suction screen (1) the equip-
ment pump suction screen (2) and the fan pump suction
screen (3) .
4. Clean the screens in solvent or replace, if necessary.
5. Install cleaned or new screens. Torque the fan pump
suction screen assembly (3) 178 - 195 N·m ( 131 -
144 lb ft ) Torque the charge pump suction screen
assemblies (1) to 202 - 222 N·m ( 149 - 164 lb ft ) .
Torque the equipment hydraulic suction screen (2) to
236 - 260 N·m ( 174 - 192 lb ft ) .
RAIL13DOZ1687AA
1
6. Slide the hoses onto the barbs and secure in place with
the T-Bolt hose clamps. Orient the threads upward and
torque clamp nut
6.6 - 7.7 N·m ( 58.4 - 68.2 lb in ) .
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