7.1 HYDRAULIC TANK
Tank Capacity: 6 liters (1.59 gallons)
Hydraulic system capacity: approximately 9 liters (2.38
gallons)
Oil Level
Oil level should be checked daily. Hydraulic oil should be
changed every 1000 hours of machine operation or at
least every 2 years.
NOTE: Check oil level with the wheels fully steered to the
left.
Figure 7-1. Hydraulic Oil Check
1. Open the access door to the hydraulic power unit
(1).
2. Locate the decal (2) on the tank (3).
3. The oil level in the tank must be within the MIN (min-
imum) and MAX (maximum) markings (4) of the
decal.
31210090
SECTION 7. HYDRAULICS
Oil Level if Decal is Missing
Adding Oil to the System
NOTE: Care should be taken not to introduce any impurities
1. Wipe all dirt and debris from the filler/breather cap
2. Remove (pull) the filler/breather cap (5).
3. Add proper grade of oil by using a funnel. Fill until oil
Tank Draining/Cleaning
1. Using the ground controls, fully raise the mast and
2. Disconnect hydraulic line from port 1 of the hydrau-
3. Place the hose in a collecting tank.
4. Using the breakdown controls, fully lower the mast
5. Reconnect hydraulic line to port 1. Using the ground
6. Disconnect hydraulic line from port 1. Place the
7. Cap/Plug hydraulic line and valve body port.
– JLG Lift –
SECTION 7 - HYDRAULICS
Figure 7-2. Oil Level if Decal is Missing
(dirt, water, etc...) while cap or plug is removed.
(5) area.
level is between the MIN and MAX markings (4).
Replace the cap.
the jib.
lic power unit.
and the jib to collect oil from the circuit.
controls, raise the jib till pump unpriming.
hose in the collecting tank. Fully lower the jib using
the breakdown controls.
7-1