UNCONTROLLE
D IF P
R
INTE
D
VEHICLE H 983
Issue 1, Jul 11
ELECTRICAL AND MECHANICAL
ENGINEERING INSTRUCTIONS
14
d.
Tighten the clamp nuts evenly to the torque specified in Para 57.
Specifications
57.
The wheel specifications are as follows:
a.
Maximum wheel run out ..................................................................................................................2 mm
b.
Tyre pressures (cold) laden .......................................................................................................... 800 kPa
c.
Tyre pressures (cold) unladen....................................................................................................... 700 kPa
d.
Wheel nut torque ....................................................................................................... 245 N.m. (185 lb.ft)
BRAKE SYSTEM
Brake System Maintenance
58. Precautions.
Some assemblies contain powerful springs and injury can result if they are not
properly disassembled. Use only proper tools and observe all precautions
relevant to the use of the tools.
Always chock vehicle wheels. Stop the engine when working under a vehicle
liable to roll. Keep hands away from chamber push rods and slack adjusters;
they may apply as system pressure drops.
Never connect or disconnect a hose or line containing air pressure. It may whip
as air escapes. Never remove a component or pipe plug unless you are certain
all system pressure has been depleted.
Never exceed recommended air pressure and always wear safety glasses when
working with air pressure. Never look into air jets or direct them at anyone.
Never attempt to disassemble an assembly until you have read and understand
the recommended procedures.
Brake Relay Valves
59. Removal.
Remove the relay valves as follows:
NOTE
This procedure applies to both the R-12 brake relay valve and the R-12H pilot relay
valve.
