PREVOST X3-45 Multiplex, Руководство по обслуживанию

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CLEANING AND INSPECTION
1. Wash all metal parts in mineral spirits and dry them
thoroughly.
(
Note: When rebuilding, all springs and all rubber parts
should be replaced.)
2. Inspect all metal parts for deterioration and wear, as
evidenced by scratches, scoring and corrosion.
3. Inspect the exhaust valve seat on the relay piston for
nicks and scratches which could cause excessive
leakage.
4. Inspect the inlet valve seat in the body for scratches
and nicks, which could cause excessive leakage.
5. Inspect the exhaust seat of the quick release diaphragm
in the R-14 cover and make sure all internal air pas-
sages in this area are open and clean and free of nicks
and scratches.
6. Replace all parts not considered serviceable during
these inspections and all springs and rubber parts. Use
only genuine Bendix replacement parts, available from
any authorized Bendix parts outlet.
ASSEMBLY
Note: All torque specified in this manual are assembly
torque and can be expected to fall off slightly after assem-
bly. Do not re-torque after initial assembly torque fall.
For assembly, hand wrenches are recommended.
Prior to assembly, lubricate all o-rings, o-ring bores and
any sliding surface with a silicone lubricant equivalent to
Dow Corning #10.
1. Install large piston o-ring on piston.
2. Install inner and outer o-rings in the exhaust cover
assembly.
3. Install the sealing ring on the cover.
4. Install piston in body, taking care not to damage the
piston o-ring.
5. Noting the reference marks made during disassembly,
install the cover on the valve body and the mounting
bracket on the cover.
6. Secure the mounting bracket and cover to the body
using the four (4) cap screws and lock washers. Torque
to 80-120 inch pounds.
7. Install the valve retainer on the inlet/exhaust valve and
install in the body.
8. Install the inlet/exhaust valve return spring in the body.
9. Install the exhaust cover assembly in the body, taking
care not to damage the o-ring.
10. While depressing the exhaust cover, install the retain-
ing ring. Make certain the retainer is completely seated
in its groove in the body.
11. Install the R-14 service port cap nut o-ring on the cap
nut. Install the diaphragm in the R-14 cover making
certain it is positioned between the guide ribs in the
cover.
13. Install the service port cap nut and torque to 150 inch
pounds.
14. If the quick release exhaust port was protected with an
exhaust cover, install the cover using the #10-24
Phillips head screw. Torque to approx. 15-25 inch
pounds.
15. Test the valves as outlined in the Operational and Leak-
age Test section before returning the valve to service.
INSTALLATION
1. Clean air lines.
2. Inspect all lines and/or hoses for damage and replace
as necessary.
3. Install valve and tighten mounting bolts.
4. Connect air lines to valve (plug any unused ports).
5. Test valve as outlined in
Operational and Leakage
Tests .
IMPORTANT! PLEASE READ
When working on or around a vehicle, the following
general precautions should be observed:
1. Park the vehicle on a level surface, apply the park-
ing brakes, and always block the wheels.
2. Stop the engine when working around the vehicle.
3. If the vehicle is equipped with air brakes, make
certain to drain the air pressure from all reservoirs
before beginning ANY work on the vehicle.
4. Following the vehicle manufacturer’s recom-
mended procedures, deactivate the electrical
system in a manner that removes all electrical
power from the vehicle.
5. When working in the engine compartment the en-
gine should be shut off. Where circumstances
require that the engine be in operation, EXTREME
CAUTION should be used to prevent personal in-
jury resulting from contact with moving, rotating,
leaking, heated, or electrically charged com-
ponents.
6. Never connect or disconnect a hose or line con-
taining pressure; it may whip. Never remove a
component or plug unless you are certain all sys-
tem pressure has been depleted.
7. Never exceed recommended pressures and always
wear safety glasses.