Hydraulic Circuit - Case CX235C SR Operator's Manual

Hydraulic circuit

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.
WARNING
Escaping fluid!
Hydraulic fluid or diesel fuel leaking under pressure can penetrate the skin and cause infection or
other injury. To prevent personal injury: Relieve all pressure before disconnecting fluid lines or per-
forming work on the hydraulic system. Before applying pressure, make sure all connections are tight
and all components are in good condition. Never use your hand to check for suspected leaks under
pressure. Use a piece of cardboard or wood for this purpose. If injured by leaking fluid, see your
doctor immediately.
Failure to comply could result in death or serious injury.
WARNING
Pressurized system!
Never attempt to drain fluids or remove filters when the engine is running. Turn off the engine and
relieve all pressure from pressurized systems before servicing the machine.
Failure to comply could result in death or serious injury.
Service specifications
Check the hydraulic reservoir fluid level: Every 10 hours or each day
Check the lines: Every 50 hours
Draining water and sediment from the hydraulic reservoir: Every 250 hours
Check the condition of the hydraulic fluid: Every 1000 hours
Replace the reservoir breather filter element: Every 1000 hours
Clean the inlet screen: Every 2000 hours
Replace the return filter: Every 2000 hours (after the first 250 hours during the run-in period)
Replace the pilot filter: Every 2000 hours (after the first 250 hours during the run-in period)
Replace the main pump outlet hoses: Every 2 years or every 4000 hours (whichever comes first)
Replace the attachment cylinder hoses: Every 2 years or every 4000 hours (whichever comes first)
Replace the suction filter: Every 5000 hours
Replace the hydraulic fluid: Every 5000 hours
Reservoir capacity: 114 l (30.1 US gal)
Total system capacity: 252 l (66.6 US gal)
Type of oil: (refer to page 6-5)
ATTENTION: If biodegradable fluid is used, it is essential to reduce the following servicing intervals to the number of
hours shown:
Replace the return filter: Every 1000 hours (after the first 50 hours during the run-in period)
Replace the hydraulic fluid: Every 2000 hours
ATTENTION: If the machine is new or if a major component has been overhauled or changed in the hydraulic system,
change the pilot filter and return filter after 50 hours of operation. After that, change these filters at the stipulated
interval.
ATTENTION: Every 1000 operating hours, it is necessary to have the hydraulic fluid analyzed Consult your CASE
CONSTRUCTION Dealer.
ATTENTION: After changing the hydraulic fluid, it is necessary to bleed all air from the hydraulic components. See
"Bleeding air from the hydraulic components".
NOTICE: If metal particles are found in the old filters, consult your CASE CONSTRUCTION Dealer.
6 - MAINTENANCE
6-36
W0241A
W0178A
W0905A