Service Manual User Manual

Section 2
2-30
Figure 2–43. Hydraulic oil filter restriction warning
indicator for early production (top)
and current production (bottom) vehicles.
1. Level the vehicle, ground the attachment, place the
travel select lever in NEUTRAL (N), and engage the
parking brake switch.
2. Fully retract all hydraulic cylinders and shut off the
engine.
3. Unlock and open the engine cover. Allow the hydraulic
oil to cool.
4. Clean around the hydraulic oil filter head (Fig. 2–44).
Loosen, but DO NOT remove, the nuts that secure
the hydraulic oil filter head to the hydraulic oil tank.
5. Place a suitable container under the hydraulic reservoir
drain plug. The container must be large enough to
hold 32 gallons (121,9 liters) of hydraulic oil.
6. To facilitate removal of the hydraulic oil filter head and
filter, the hydraulic oil return line may need to be
swiveled out of the way, and the indicator wiring
unplugged. DO NOT crimp the hydraulic oil return
line or indicator wiring. Rotate and remove the
hydraulic oil filter head; be prepared for a large
amount of oil to be displaced.
Figure 2–44. Clean around the hydraulic oil filter head.
7. Remove the hydraulic oil filter element (Fig. 2–45)
from the hydraulic oil filter head. Dispose of properly.
8. Clean the filter head sealing surface.
Figure 2–45. Replace the hydraulic filter element and add
hydraulic oil as required.
9. Remove the magnetic drain plug and allow the
hydraulic oil to drain into the container. Clean loose
particles from the magnetic drain plug. Transfer the
used hydraulic oil to a container with a cover and
label the container as used hydraulic oil. Dispose of
properly.
10. Reinstall the magnetic drain plug into the hydraulic oil
reservoir.
WARNING: DO NOT change the hydraulic oil
or the hydraulic oil filter with the engine running.
Contact with moving parts can cause serious
injury or death.
1
2
3
4
F
N
R
P
D
OS0222
Hydraulic Oil Filter Restriction
Warning Indicator
Early Production
Current Production
Hydraulic Oil Filter Restriction
Warning Indicator
OS1040
Hydraulic Oil
Filter Head
Filter
Head
Element
Seal
Sight
Glass
Hydraulic
Reservoir
Drain Plug
OS1600
Model 3606
•
Origin 10/99