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RELAY VALVE REPAIR KIT (R-12/R-14) - 3-YEAR WARRANTY
- Remove dust cap and release bolt from side of the center section. Re-attach the washer and nut to the bolt.
- Then, you must SECURE the brake chamber on a table and apply between 100-120 psi to the parking side inlet port marked PARKING / 12. Maintain this pressure throughout this caging procedure.
- Once properly seated, screw the nut and washer up to the housing, by hand at first while sure the T-end remains seated inside the spring plate groove.
- With a hand wrench, torque the release bolt nut to ±20 ft-lbs. NEVER use an impact wrench as you will likely damage the unit and/or possibly cause the main spring to release, potentially causing bodily harm.
- The RELEASE BOLT is now holding the parking spring in the collapsed position so you can SLOWLY RELEASE the air pressure from the unit.
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