Technical information

84
Top 10 Installer Tips
2 5 - 4 0 1 2 - 0 1 0 3 - 1 0
ROADMASTER, Inc. 6110 N.E. 127th Ave. Vancouver, WA 98682 800-669-9690 Fax [phone] www.roadmasterinc.com
ALL SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
1. The port on the proportioning valve (Figure 1) can be
rotated up to one full turn counterclockwise for easier con-
nection to the brake line — hold the bottom blue section of the
valve (Figure 1) in place with adjustable pliers. With another
pair of pliers, turn the top blue section (Figure 1) until the port
is at the correct position.
Although it has been unthreaded, the top section of the
proportioning valve will be held in place by the brake line.
2. When scheduling a BrakeMaster installation, check to see
if the customer’s vehicle requires a seat adaptor bracket and/
or a stop light switch — select “Vehicle-Specific Info” on this
website, then “Supplemental Braking Systems.” Enter the ve-
hicle make, model and year, then scroll down the page to see
if a stop light switch kit and/or a seat adaptor is available. If a
stop light switch is available, it is required; if the seat adaptor
bracket is “required,” it will say so under “Comments.”
3. After the installation, check all the brake line fittings in
the motorhome for leaks. (Figure 1 identifies the six points
to check near the proportioning valve.)
Wipe away any residual brake fluid. Otherwise, it will drip
later on, raising possible customer concerns that the system
is leaking.
4. Keep a stock of 1/2" and 3/8" brake line tees in stock for
BrakeMaster installations in motorhomes with air or air over
hydraulic brakes.
Also keep a stock of metric-to-standard brake line tees
(ROADMASTER part number 7921) for motorhomes with hy-
draulic brakes and metric brake line fittings.
5. On the initial installation, it may be necessary to adjust
the tabs (Figure 2) on the pedal clamp (Figure 2) — use pliers
to bend any or all of the tabs so that they hook around and
under the towed vehicle's brake pedal.
6. Route the air lines so that they are no closer than two feet
from any “hot” components such as the engine or the exhaust
system. Otherwise, the heat will soften the plastic, causing
the air line to rupture.
Also, use wire ties to secure the air lines away from mov-
ing parts and/or sharp edges.
Do not kink the air lines, or bend them to the extent that
they crimp or crease — air pressure will be substantially re-
duced, or blocked entirely, at any kink in the air lines.
7. Many manufacturers have one or more auxiliary wires pre-
strung from the dash to the rear of the motorhome, which you
can use to install the motorhome monitor. Call the manufac-
turer to locate the auxiliary wires.
8. The quick exhaust valve (Figure 2) on the air cylinder can
be rotated for easier connection to the air line. (Rotate the
valve so that the air line is not kinked.)
9. Install the mounting post (Figure 2) so that the air cylinder
must be pulled back in order to insert the safety pin and
Figure 1
Figure 2
Towing and Suspension Solutions
hasp (Figure 2). This creates spring tension, which
keeps the weight of the cylinder off the brake pedal.
If the cylinder is not pulled back when it is connect-
ed, the weight of the cylinder will cause the pedal clamp
to depress the towed vehicle’s brakes continuously.
10. After the installation is complete…
 • …check the monitor light for proper operation.
 • …explain the operation of the BrakeMaster system
to the customer, until he/she understands how to oper-
ate and maintain it.