Description
Roadmaster 900002 is an adjustable pressure reducer for BrakeMaster and other pressurized-air supplemental braking systems. It reduces the air pressure applied to the towed vehicle's brake pedal to help prevent excessive braking. This is an accessory for an existing braking system, not a complete brake controller.
When a reducer is required
- Roadmaster requires this accessory on BrakeMaster installations involving towed vehicles without power brakes or vehicles with full-time active (continuous power-assist) brakes.
- Some hybrid and other vehicles maintain boosted brakes while being flat-towed; confirm the exact brake configuration in the vehicle manual and Roadmaster instructions.
- The reducer has push-to-connect fittings for a 1/4-inch pneumatic line, an adjustable pressure control, a pressure-test port and mounting bracket/hardware.
Critical installation warning
When a BrakeAway system is present, install the reducer AFTER the BrakeAway reservoir's air-out connection and BEFORE the towed vehicle's interior quick coupler. Roadmaster warns that installing the reducer ahead of BrakeAway can prevent full-pressure emergency braking. Follow Roadmaster's complete installation and pressure-adjustment procedures; installation and testing should be performed by a qualified technician.
Part identification
| Manufacturer | Roadmaster |
|---|---|
| MPN | 900002 |
| Product | Adjustable pneumatic supplemental-brake pressure reducer |
Recently viewed
You may also like
About NewRVParts
NewRVParts is an online-only source for brand-new RV parts and accessories, truck camper equipment, towing and trailer parts, truck accessories, and marine products. We serve customers throughout Canada and the United States, with products from trusted manufacturers shipped through a large North American distribution network. Shop online for replacement parts, equipment, and accessories delivered directly to your door.