Checking, Disassembling And Servicing; Checking And Adjusting; Power Steering System - wsm B2420 Workshop Manual

B2420, WSM

4. CHECKING, DISASSEMBLING AND SERVICING

[1] CHECKING AND ADJUSTING

(1) Power Steering System

Steering Wheel Play
1. Turn the front wheels straight ahead.
2. Move the steering wheel back and forth until slight movement of
pitman arm is seen. Measure maximum play of steering wheel
at outer rim.
3. If the play is not within the factory specifications, turn the
adjusting screw to adjust.
Steering wheel play Factory specification
(Adjusting)
1. Remove the steering wheel.
2. Remove the meter panel and panel under cover.
3. Remove the axle lever retaining screw.
4. Install the steering wheel.
5. Loosen the lock nut and turn the adjusting screw with a screw
driver to adjust the play. When the adjusting screw is turned
clockwise, the play decreases.
6. After adjustment, fix it with the lock nut while holding the
adjusting screw.
Steering Wheel Operating Torque
1. Park the tractor on flat concrete place.
2. Start the engine. After warming up, set the engine speed at
-1
approx. 2600 min (rpm).
3. Set a spring balance to the steering wheel to measure the
operating torque.
4. If the measurement exceeds the factory specification, check the
suction line, delivery line, and the performance of hydraulic
pump. And then, check the power steering gear box assembly.
Steering wheel operating
Factory specification
torque
Condition
• Engine speed
-1
Approx. 2600 min (rpm)
• Oil temperature
45 to 55 °C (113 to 131 °F)
• Tractor by itself (without any implement and weight)
7-S5
STEERING
5.0 to 30 mm
0.20 to 1.1 in.
9Y1210436STS0004US0
Less than
5 N·m
0.5 kgf·m
4 lbf·ft
9Y1210436STS0005US0
KiSC issued 06, 2012 A