C 20 3/4 Ton Pickup 2WD V8-305 5.0L VIN H 4-bbl (1982)
Air Injection Relief Valve: Service and Repair
Fig. 8 - Removing Pressure Relief Valve With Slide Hammer Tool Shown
REMOVAL
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If the pressure relief valve is incorporated in the diverter valve or air bypass valve, the complete valve must be replaced.
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If the pressure relief valve is incorporated inside the air pump, pull pressure relief valve from air pump--using tools No. J-6585 and J-7055-5 or
equivalents--Fig 8.
Fig. 9 - Installing Pressure Relief Valve
NOTE: Use extreme care when installing injection tube to avoid distorting air pump housing.
INSTALLATION
1. Tap relief valve into air pump housing--using a 15/16 inch socket--Fig 9--until valve is completely seated on housing.
Pressure Setting Plug Replacement
NOTE: The length of the pressure setting plug determines the pressure required to open the relief valve. Plugs are usually color-coded by length.
Be sure to use the correct plug for application.
1. Using a small screwdriver carefully unlock the legs from the inside surface of the relief valve.
2. To install the plug, carefully push it into the relief valve until the legs lock.
NOTE: If pressure setting plug is to be reused ensure the leg angles are sufficient for the plug to lock into the relief valve.
