Brake Proportioning/Combination Valve Removal and Installation
Disassembly the these parts:
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Bushings.
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Collars.
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Rubber plates.
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Load sensing valve boot.
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Load sensing spring boot.
ASSEMBLY NOTE:
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Apply lithium soap-base glycol grease to all rubbing areas.
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Do not mistake the valve side for the shackle side of the load sensing spring.
INSPECTION
Inspect valve piston pin and load sensing spring contact surface for wear.
Wear limit: 0.7 mm (0.028 inch)
REASSEMBLY
Assembly is in the reverse order of disassembly.