LUBRICATION & PERIODIC MAINTENANCE
63
Air Bleeding Hydraulic System
FIGS. 6-16 & 6-17: When transmission oil has been
replaced, it is necessary to bleed the air from the system
as follows:
- Check rear transmission (hydraulic) system oil level
and add as necessary.
- Place a pan under bleed plug, 1.
- Remove plug.
- Start engine and let it run for about five seconds.
- Stop engine.
- Screw in bleed plug, 1, with sealant.
Start Tractor and allow to idle several minutes while oper-
ating hydraulic controls. Shut engine off, lower the three-
point hitch and recheck oil level. Replenish transmission
oil, as necessary, through filler opening, 2. Check for
leaks and correct as necessary.
IMPORTANT: Failure to bleed the hydraulic system can
cause pump seizure and / or poor
hydraulic system performance.
Front Axle Oil
Front drive axle has a common oil level for front differen-
tial housing and each wheel reduction unit. Oil level
should be checked every 50 hours of Tractor operation.
The oil should be changed after the first 50 hours or oper-
ation and then replaced after every 300 hours thereafter.
FIG. 6-18: To Check Oil Level - Park Tractor on level
ground and then remove oil level fill plug, 2. Oil should be
level with or slightly below level plug opening. Remove fill
plug, 1, and add oil until oil is expressed from level plug
opening. Replace level plug and fill plug.
To Change Oil - Remove drain plug, 3, from both
wheel reduction units. When all oil has drained, re-
place drain plugs and fill housing to level plug opening.
Replace level plug and fill plug.
FIG. 6-16
FIG. 6-17
FIG. 6-18
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