Roadmaster BrakeAway 8600 is the emergency pneumatic braking assembly used with BrakeMaster 9160 and 9060. Its illustrated instructions show the pressurized air reservoir, breakaway switch, drain valve, solenoid and the air-in/air-out lines that operate the towed vehicle's brake cylinder if it separates from the motorhome.
Original Roadmaster components and installation drawings
The manufacturer diagrams show the components and connection points for this system. Open each PDF for a larger view and the complete service instructions.
BrakeAway reservoir and switch orientation, Figures 1–2
Open the Roadmaster PDF to enlarge the labelled components and connections.
Open brakeaway reservoir and switch orientation, figures 1–2 (PDF)
Breakaway battery, 10A fuse and solenoid wiring, Figures 3–4
Open the Roadmaster PDF to enlarge the labelled components and connections.
Open breakaway battery, 10a fuse and solenoid wiring, figures 3–4 (PDF)
BrakeAway service part-number table
Open the Roadmaster PDF to enlarge the labelled components and connections.
Original Roadmaster parts and reference numbers
These factory references identify the system's original pieces. Unlinked entries are not represented as individually stocked NewRVParts replacement parts.
| Reference | Roadmaster number | Component | Shop |
|---|---|---|---|
| Assembly | 8600 | Complete BrakeAway pneumatic emergency system | |
| 21a | 450022 | BrakeAway pressurized air reservoir/cylinder, excluding drain | |
| 21b | 450115 | Air reservoir drain valve | |
| 21c | 200290-00 | 1/8-inch female pipe-thread tee | |
| 21d | 200200-00 | Breakaway switch with activation pin | |
| 21e | 200200-20 | Replacement breakaway pin only | |
| 21f | 450092 | Two rubber reservoir clamps, 2-inch | |
| 21g | 8602 | Original manual's coiled breakaway activation cable | |
| Air line | 450700 | 1/4-inch pneumatic tubing | |
| Air-line insert | 450735 | Brass insert for tubing connection | |
| Air coupler | 921004-50 | Male quick-air coupling reference from base system | |
| Air coupler | 921004-60 | Female quick-air coupling reference from base system | |
| Wiring | — | Battery-positive connection via inline fuse holder | |
| Fuse | — | 10A inline fuse located close to battery positive | |
| Ground | — | Chassis-ground connection from solenoid circuit | |
| Control | — | Breakaway switch lead to reservoir's solenoid valve | |
| Air inlet | — | Compression fitting labelled AIR IN on reservoir | |
| Air outlet | — | Compression fitting labelled AIR OUT on reservoir | |
| Related accessory | 8603 | Separately sold eight-foot coiled breakaway activation cable; not part 8602 | View exact part |
Related NewRVParts products with photographs
Check each product's full manufacturer number and package contents. Complete systems, transfer kits, motorhome accessories and individual service parts are sold in different configurations.
Confirm the correct braking system
Roadmaster's original BrakeAway parts table calls out cable 8602. NewRVParts carries Roadmaster 8603, a separately sold replacement activation cable that is not the same part number; confirm its connections and length before buying. This activation cable is never a substitute for the rated safety cables used to retain the towed vehicle.
Find Roadmaster's current installation and service manuals