Hino 600, Workshop Manual, Page: 296 / 451

SERVICE BRAKE (FULL AIR BRAKE) BR02–18
INSPECTION AND REPAIR
EN0680202H300001
1. PREVENTATIVE MAINTENANCE
Every 6 months, 1,800 operating hours or every 50,000 miles inspect
all parts.
Replace any check valves leaking or showing signs of wear or deteri-
oration. Check for proper operation.
2. OPERATION & LEAKAGE CHECKS
NOTICE
Depending upon installation, it may be easier or necessary to com-
pletely remove check valves so that the following checks may be
made.
With air pressure present at outlet side of check valve and the inlet
side open to atmosphere, coat the open end of the check valve with
soap suds; a 1" bubble in 5 seconds is permissible.
If the check valve does not function as described, or leakage is exces-
sive, it is recommended that it be replaced with a new genuine Bendix
part available at any Bendix parts outlet.
3. REMOVAL
Block and hold vehicle by means other than air brakes.
Completely drain all reservoirs.
Disconnect air lines at single check valve and remove.
4. DISASSEMBLY/ASSEMBLY
NOTICE
There are no Disassembly/Assembly procedures for SC-3 valves.
They are non-serviceable items. If a valve does not meet the Opera-
tional and Leakage tests, it should be replaced at any authorized Ben-
dix parts outlet.
5. TESTING AND TROUBLESHOOTING
Perform "2.OPERATION & LEAKAGE CHECK".
6. IMPORTANT! PLEASE READ
When working on or around a vehicle, the following general pre-
cautions should be observed:
(1) Park the vehicle on a level surface, apply the parking 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 vehi-
cle.
(4) Following the vehicle manufacturer's recommended procedures,
deactivate the electrical system in a manner that removes all electrical
power from the vehicle.
(5) When working in the engine compartment the engine should be shut
off. Where circumstances require that the engine be in operation,
EXTREME CAUTION should be used to prevent personal injury
resulting from contact with moving, rotating, leaking, heated, or elec-
trically charged components.
(6) Never connect or disconnect a hose or line containing pressure; it
may whip. Never remove a component or plug unless you are certain
all system pressure has been depleted.
(7) Never exceed recommended pressures and always wear safety
glasses.