Kubota WSM STa-30, Workshop Manual

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9-S7
ST
α
-30 · ST
α
-35, WSM HYDRAULIC SYSTEM
(2) Position Control Valve
Adjusting Position Control Rod
1. Set the position control lever to the floating position.
2. Start the engine, and after warming-up, set the engine speed at
1000 to 1500 rpm.
3. Set the position control lever stopper to the maximum raising
position.
4. Move the position control lever to the maximum raising position.
(Contact to the position control lever stopper)
5. Turn the adjusting nut (3) and lock nut (2) until the relief valve
begins to be operated. (Turn to clockwise)
6. Then turn back the adjusting nut (3) counterclockwise by 2 turn.
7. Tighten the lock nut (2) and set the engine speed to maximum.
8. Move the position control lever to the lowest position and
maximum raising position (3 to 5 times to check the relief valve
does not operate).
9. Set the position control lever to the maximum raising position,
then move the lief arm to the upper end by hand and measure the
free play.
10.Stop the engine.
11.If the measurement is not within the factory specification,
adjusting position control rod again.
Condition
• Engine speed .......... Maximum
• Oil temperature ....... 45 to 55 °C
113 to 131 °F
W1012507
Lift arm free play at
maximum raising
position
Factory spec.
5.0 to 15.0 mm
0.197 to 0.591 in.
(1) Position Control Rod
(2) Lock Nut (3) Adjusting Nut
KiSC issued 11, 2006 A