Specifications

154 SEBU7858-03
Maintenance Section
Hydraulic System Oil - Change
Note: The norma
l hydraulic oil change interval
is at every 2000 Service Hours or 1 Year. By
performing S·O·S oil analysis, the hydraulic
oil change int
erval may be extended to 4000
Service Hours or 2 Years. S·O·S oil analysis
must be performed at e very 500 Service Hours
or3Monthsin
order to extend the hydraulic oil
change interval. The results from the S·O·S oil
analysis will determine if the hydraulic oil change
interval ma
y be extended. If S·O·S oil analysis is
not availa ble, the hydraulic oil change interval
must remain at every 2000 Service Hours or 1
Year . Refer
to the Operation and Maintenance
Manual, “S·O·S Information”.
Note: Cat H
YDO Advanced 10 has a 50% increase
in the standard oil drain interval for machine
hydraulic systems (3000 hours ve rsus 2000
hours) ove
r second and third choice oils - when
following the maintenance interval schedule for
oil filter changes and for oil sampling that is
stated in
the Operation and Maintenance Manual
for your particular machine. 6000 hour oil drain
intervals are possible when using S·O·S S ervices
oil analy
sis. Contact your Cat dealer for details.
g01124541
Illustration 210
Hydraulic tank drain valve (1) is located on the bottom
of the hydraulic tank in front of the right tractor wheel.
Note: Before you change the hydraulic tank oil, the
machine must meet the following conditions:
•
The machine must be level.
•
The parking brake must be applied.
•
The hydraulic oil must be warm.
•
The transmission control must be in NEUTRAL.
•
The bowl must be lowered.
g01124542
Illustration 211
Hydraulic oil fillercap(3)islocatedontopofthe
hydraulic tank.
1. Clean the hydraulic oil filler cap.
2. The hydraulic oil filler cap is a locking cap. If a
padlock is on the cap, remove the padlock. Raise
lever (4) in order to engage the lug.
3. Turn the hydraulic oil filler cap counterclockwise in
order to remove the cap. Slowly remove the cap in
order to relieve pressure in the hydraulic tank.
4. Slowly remove hydraulic tank drain plug (2).
5. Open hydraulic tank drain valve (1). Allow the oil
to drain into a suitable container.
6. Change the hydraulic system filters. Refer to the
following topics that apply to your machine:
•
Operation and Maintenance Manual, “Hydraulic
System Oil Filter (Gear Pump and Case Drain)
-Replace”
•
Operation and Maintenance Manual, “Hydraulic
System Oil Filter (Pilot) - Replace”
•
Operation and Maintenance Manual, “Hydraulic
System Oil Filter - Replace”
7. Close the hydraulic tank drain valve.
8. Clean the hydraulic tank drain plug. Install the
hydraulic tank drain plug.
9. A screen is located under hydraulic oil filler cap
(3). Remove the screen.
10. Washthescreeninclean,nonflammable solvent.
Inspect the screen for damage. If the screen is
damaged, replace the screen.
11. Install the screen.