Pump Removal - Oshkosh JLG 1930ES Service Maintenance Manual

Pump Removal

1. Place the pump/motor assembly on a clean work-
bench.
NOTE: Drain the hydraulic oil by carefully removing the oil
fill plug located on the left side of the hydraulic reser-
voir.
2. Remove the oil tank from the lift cylinder as fol-
lows:
a. Slowly loosen and remove the four bolts that
hold the tank on to the cylinder.
b. Carefully remove the tank from the valve body
taking care not to damage internal pickup
tube or o-ring gasket on tank.
c. Place tank on a suitable work bench or work
area.
NOTE: The filter and bypass are located on the pickup tube
inside the tank.
The filter should be changed once a year.
3121656
SECTION 4 - HYDRAULICS
3. If replacing filter, pull old filter off the end of the
tube and push new filter onto the end of tube.
4. Thoroughly clean the tank and clean any debris
from the magnet.
5. Wipe out tank with clean, lint free rag, taking care
not to introduce debris or dirt.
6. Replace the tank. Torque mounting bolts to 20-25
in-lb.
7. If only replacing the oil filter and maintenance is
complete, reinstall cylinder assembly on machine,
remove fill plug and refill tank with proper grade
of oil by using a funnel. Fill until oil weeps out of
opening.
8. Replace plug and torque to 40 ft. lbs (56 Nm).
9. To remove the oil pickup line, squeeze retainer and
slide outward.
10. Replace the o-ring if necessary.
4-13