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Change Hydraulic Oil and Filter
The hydraulic system oil and filter must be changed ini-
tially at 200 hours and thereafter every 800 hours of op-
eration or seasonally, whichever comes first. NOTE:
Change oil and filters every 400 hours if equipped with
Model 30726 Hydraulic Kit. The hydraulic system is de-
signed to operate on anti–wear hydraulic fluid. The ma-
chines reservoir is filled at the factory with
approximately 12 U.S. quarts (11.4 liters) of Mobil 424
hydraulic fluid (See Check Hydraulic Oil in this section
for recommended fluids). Check level of hydraulic
fluid before engine is first started and daily thereaf-
Figure 31
ter.
1. Drain plug
1
1. Start engine, park machine on a level surface, lower
implement to the shop floor, set the parking brake, and
shut engine off.
2. Clean area around dipstick cap and remove cap
from axle filler tube.
3. To ease access to axle housing drain plug, imple-
ment may be removed from traction unit.
4. Remove drain plug from axle housing and allow oil
to flow into drain pan.
5. Clean area around hydraulic oil filter and remove fil-
ter. NOTE: Also replace filter for Model 30726 Hydraulic
Kit.
1
Figure 32
6. Lubricate new filter seal and install filter.
1. Hydraulic Filter
7. Install drain plug in axle housing.
8. Through axle filler tube, fill axle to proper level with
Mobil 424 hydraulic fluid. Install dipstick cap.
9. Start and run the engine at idle speed for about two
minutes, raise and lower implement and turn the steer-
ing wheel lock to lock to purge air trapped in the system.
Shut the engine off.
10. Let machine set for two additional minutes, then re-
move dipstick and check oil level in axle. If level is low,
add oil until level matches groove in dipstick. If level is
too high, remove drain plug and drain oil until oil level
matches Full mark on dipstick.
1
1
Figure 33
1. Hydraulic filter (Model 30726 Hydraulic Kit)
Hydraulic System
and Transaxle
Figure 30
1. Dipstick cap
Groundsmaster 3000/3000–D
Page 5 – 23
Hydraulic System