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Before disabling brake circuit, be sure truck
wheels are blocked to prevent possible roll-away.
1. Securely block the wheels to prevent possible
roll-away.
2. Turn key switch OFF and allow 90 seconds for
steering system accumulators to bleed down.
Open valves (11 & 13, Figure 3-1) to bleed
down both brake accumulators.
1. Brake Valve
2. Retainer Clip
3. Pivot Shaft
J3-4
FIGURE 3-2. SINGLE PEDAL BRAKE VALVE ASSEMBLY
4. Bushings
5. Shims
6. Foot Pad
Brake Circuit Component Service
3. Remove access panel in front of operator's cab.
4. Tag and remove all hydraulic lines from brake
valve. Plug lines and ports to prevent possible
contamination. Remove all valve fittings.
5. If equipped, remove retard pedal that is located
on brake pedal.
7. Brake Pedal Actuator
8. Spring Assembly
9. Jam Nut
10. Set Screw
11. Pedal Return Stop
J03034
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