User's Manual

9
6. Using thumb force on the piston stem, push the piston(6)
out the opposite end of the body(7). Remove o-ring(5)
from the piston.
7. Discard all items that have replacement parts in the
maintenance kit.
CLEANING & INSPECTION
1. Using mineral spirits or an equivalent solvent, clean and
thoroughly dry all parts. Do not allow mineral spirits to
come into contact with the wiring connectors or
solenoids.
2. Inspect the interior and exterior of all parts that will be
reused for severe corrosion, pitting or cracks. Superficial
corrosion and/or pitting on the exterior portion of the body
is acceptable.
3. Inspect bores for deep scuffing or gouges.
4. Inspect pipe threads in the body. Make certain they are
clean and free of thread sealant.
5. Inspect all air line fittings and plugs for corrosion. Clean
all old thread sealant from pipe threads.
6. Any component exhibiting a condition described in
inspection steps 2 to 5 should be discarded and replaced
before proceeding.
ASSEMBLY - REFER TO FIGURE 8
1. Using a lubricant (Bendix Pc. No. 291126) lightly coat
all o-rings, seals, pistons, and body bores.
2. Install spring seat(9) onto inlet exhaust valve(8) so that
it covers the rubber seat of the inlet exhaust valve. Place
inlet/exhaust valve, large diameter first, into the body(7)
bore.
3. Install spring(10) over the barrel of the inlet exhaust
valve(8) so that one end of the spring rests on the spring
seat(9).
4. Install o-rings(11 and 12) into the respective grooves of
the outside and inside diameter of the exhaust
assembly(13). Place the large diameter of the exhaust
assembly against the spring(10) and compress the spring
until the exhaust assembly enters the bore of the body(7)
and o-ring(11) seals against the wall of the bore. Make
certain not to cut or pinch the o-ring.
5. Depress the exhaust assembly into the bore until it
exposes the groove for snap ring(14). Install snap ring(14)
into its groove. Make sure it is fully seated.
6. Install o-ring(5) into its groove in piston(6). Install piston(6)
into the M-12 body. The piston stem fits into the small
hole in the center of the body.
7. Install o-ring(4) onto the protrusion on the bottom of the
solenoid assembly(3). Install the solenoid assembly(3)
onto the body(7). The solenoid assembly will fit on the
body(7) in any of four orientations, 90 degrees apart
however it should be installed in the position marked in
step 2 of the Disassembly instructions. Secure the
solenoid assembly to the body with the four cap
screws(2). Torque to 120 to 150 in. lbs.
8. Install gasket(1) onto the controller or cover plate.
A. If installing a controller, connect the four pin connec-
tor on the solenoid assembly(3) to the corresponding
connector on the controller making certain the con-
nector halves snap and lock.
B. If installing a cover plate, make certain the “pinch”
grommet on the short wire harness is in one of the
two “notches” in the solenoid assembly(3) so that
when the cover plate is installed the wire harness
will not be pinched.
Note the relationship mark made in step 2 of the
disassembly, then secure the controller or cover plate
to the solenoid assembly(3) using the four cap screws.
Torque to 30 60 in. lbs.
9. Install all air line fittings and plugs. Make certain no thread
sealing material enters the valve.
10. Install the antilock assembly on the vehicle. Perform the
"OPERATIONAL AND LEAKAGE TESTS" before
returning the vehicle to service.