B22W-202010
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CHAPTER 4 HST SYSTEM1022H TRACTOR
4
7.4
HYDRAULIC SYSTEM BLEED PROCEDURE
To remove air trapped in the hydraulic system which
will prevent proper operation.
8. Operate rockshaft several times until it operates
smoothly.
9. Stop the engine and check the hydraulic reservoir
oil level. Fill as needed. Check all line connections
for leaks; tighten if necessary.
10. Lower the tractor to the ground.
11. Drive tractor in forward and reverse several times
until transmission operates smoothly.
1. Install a new hydraulic oil lter.
2. Fill the transaxle with specied and recommended
transmission oil to the proper level in sight glass.
3. Turn the key to the glow position to heat the
combustion chamber in the engine.
4. Turn the key to START. And turn the key to OFF.
5. Raise tractor front end and support on suitable
stands.
6. Start the engine and run at low idle.
7. Slowly turn the steering wheel left and right until
wheels turn smoothly indicating that any trapped
air has been bled back to the reservoir.
REASON
PROCEDURE
IMPORTANT
• If contamination is found in hydraulic
hydraulic system.
IMPORTANT
• If steering fails to respond, or pump pressure
is not being delivered to steering control unit
(SCU), shut engine off and check to see that
steering hoses are connected to the correct
SCU ports.
IMPORTANT
• If rock shaft fails to react to lift control lever
movement, shut engine off and check hose
clamps on suction tube elbow and manifold
to ensure that they are properly tightened.
NOTE
•
installing.
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