Cub Cadet 8454, Service Manual

Page: 279 / 334

HYDRAULIC SYSTEM
6-85 D569-W02 May-2003
How to adjust the sensitivity
Components Trouble Checking Remark
4. Hydraulic cylinder
assembly
(MLS valve assembly)
1. Apply the load of 500 kg to the lift arm and move the adjusting lever
up to be placed on the middle of the whole adjustment range.
2. The sensitivity shall be adjusted by turning the loosening-prevention
screw “A” to counter clockwise with a hexagonal wrench till the lift
arm continues to move.
3. Turn the screw “A” to clockwise till the lift arm stops to move and
check if it is sealed on that position.
4. After completion of the above adjustment, turn the screw ”A” to
maximum 1/4 clockwise to seal it completely. By doing this, the
sensitivity of MLS valve shall be set to maximum.
How to adjust the hydraulic lift arm hunting
1. Adjust the length of tie rod (A) in the state of attaching operating
machine and if the hunting occurs after adjustment, return to the
original length before adjustment.
- Standard value: 135 ± 5 mm
2. If the same phenomenon occurs in adjusting the above clause 1,
turn the adjusting bolt (A) of MLS sensitivity and tighten it with a nut
if the hunting does not occur.
569W6B7A
569W6B8A
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