Greenlee GPU 18-8 Operation, Service And Parts Instruction Manual page 11

GPU 18-8 Hydraulic Power Unit
Maintenance (cont'd)
The service life of the power unit will be maximized by
proper care and maintenance. The maintenance
schedule below is recommended.
Note: Change engine oil after the first 5 hours of
operation. Thereafter, change engine oil
according to the Maintenance Schedule.
Every 5 Hours
1. Check engine crankcase oil level. Fill if necessary.
See Oil Recommendations - Engine Manual.
2. Check fuel tank level. Fill if necessary.
See Fuel Recommendations - Engine Manual.
3. See Figure 5. Check hydraulic reservoir oil level.
Fill to FULL mark on dipstick. Do not overfill
reservoir. See Recommended Hydraulic Fluids.
Every 10 Hours
1. Wipe all power unit surfaces clean of grease,
dirt and foreign material.
2. Inspect the hydraulic system hoses and fittings
for signs of leaks, cracks, wear, or damage.
Replace if necessary.
Every 25 Hours
1. Service engine air cleaner/pre-cleaner.
See Engine Manual.
Every 50 Hours
1. Change engine crankcase oil and oil filter.
See Engine Manual.
Every 100 Hours or Once Yearly
1. Drain hydraulic reservoir oil. Clean and flush
reservoir. Change hydraulic oil filter. Fill reservoir
with new, clean hydraulic oil. See Recommended
Hydraulic Fluids. Operate power unit to circulate oil
through the hydraulic system. Stop power unit.
Recheck hydraulic oil level. Fill reservoir to the
FULL mark on the dipstick. Do not overfill reservoir.
See Figure 5.
2. Service engine air cleaner cartridge.
See Engine Manual.
3. Perform a detailed inspection of the system hoses
and fittings as stated in Appendix A - S.A.E
Standard J1273, May 1986. Replace the hoses
and/or fittings if necessary.
Hydraulic Reservoir Dipstick
11
Figure 5
F
OPERATING AREA
E