Express 3/4 Ton Van V8-5.7L VIN R (1998)
5. Disconnect the front and rear brake pipes from the combination valve.
6. Remove the alien bolts that fasten the combination valve to the BPMV.
7. Remove the combination valve from the BPMV.
8. Install the transfer tubes to the valve.
INSTALLATION PROCEDURE
IMPORTANT:
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Do not reuse the old transfer tubes. Always install new transfer tubes with a new combination valve.
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Make sure that the replacement combination valve has the same pin punched identification code as the old part.
1. Install the transfer tubes into the combination valve until the transfer tubes are fully seated.
2. Install the combination valve to the BPMV.
3. Install the alien bolts to the combination valve and the BPMV.
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Tighten the alien bolts of the combination valve to 8 Nm (6 ft. lbs.).
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Tighten the alien bolts of the combination valve a second time to 16 Nm (12 ft. lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.