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Haldex Modular Dolly System (HMDS) -
Functional Test for Reservoir Purge Valve (RPV)
Step 1:
Install Panel System with Reservoir Purge Valve (RPV).
Step 2:
Start engine or use shop air to build system pressure in reservoir air tank to
110 – 120 PSI.
Step 3:
Check for any air leaks.
Step 4:
Set parking brakes or remove emergency airline from the trailer.
- There will be a blast of air coming from the exhaust tube that will last for about
eight seconds. Check for any moisture/contaminates during purge.
Step 5:
Repeat Steps 1 through Step 4 for three to five cycles.
PAGE 12
Haldex Modular Dolly System (HMDS) with Brake
Monitoring System (BMS) for Single Axle Dollies
Installation/Service Guide (L31298W)
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