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Inspection and
maintenance
49
Operation of brake pedal
50
Service brake effectiveness
51
Operation of exhaust brake
52
Exhaust brake control cylinder packing
replacement
53
Operation of air dryer
54
Check drain from air dryer exhaust port
55
Air dryer disassembly and inspection
Air dryer desiccant replacement
56
Brake shoe clearance
57
Brake lining wear
58
Brake drum wear
59
Parking brake effectiveness
60
Parking brake lever stroke
61
Parking brake drum and lining wear
62
Wheel cylinder piston cup and dust seal
replacement
63
Brake booster packing, cup and rubber
parts replacement
64
Brake hose replacement
65
Check valve packing and rubber
parts replacement
66
Brake valve packing and rubber
parts replacement
67
Air compressor and pressure gauge
hoses replacement
68
Brake booster power cylinder packing
replacement
69
Brake fluid reservoir tank tube
replacement
STEERING SYSTEM
70
Fluid leakage from steering system
71
Steering wheel play
72
Steering operating condition
73
Looseness and play of steering system
(including hoses and pipes)
74
Wheel alignment
Time of inspection and maintenance
Inspection interval
×
×
×
×
×
Every 12 months
×
×
×
Every 24 months
×
×
×
×
×
×
×
Every 12 months
Every 12 months
Every 12 months
Every 12 months
Every 12 months
Every 24 months
Every 24 months
Every 24 months
×
×
×
×
×
×
×
*1 : 30000 km/18000 miles or 6 months, whichever occurs first.
*2 : 60000 km/36000 miles or 12 months, whichever occurs first.
: Exhaust emission items
E
N
: Noise control items
Working procedures
Depress the brake pedal and release it, checking for the
sound of air being released from the brake valve and to
ensure that the pedal returns normally without catching
While driving the vehicle at low speed, check braking
effect and check for uneven braking
Check exhaust brake operation
Check exhaust brake control cylinder packing; replace if
necessary
Open drain cock of air tank and make sure there is no
drainage
Check to see that oil is not discharged abnormally from
exhaust port of air dryer
Disassemble the air dryer and inspect its components.
When more than 1/5 of the desiccant is discolored,
replace it
Disassemble the air dryer and replace the desiccant and
rubber parts
Measure clearance with feeler gauge
Check lining wear
Disassemble and check drum for wear, cracks and
damage
On a slope, check that vehicle can be held stationary
With lever fully pulled, check that lever is locked
completely and that there is allowance in pulling stroke
Disassemble and check drum for wear, cracks and
damage and check lining for wear
Check wheel cylinder piston cup and dust seal; replace if ^ Gr 35
necessary
Check brake booster packing, cup and rubber parts;
replace if necessary
Check brake hose; replace if necessary
Check the check valve packing and rubber parts;
replace if necessary
Check brake valve packing and rubber parts; replace if
necessary
Replace air compressor and pressure gauge hoses
Replace brake booster power cylinder packing
Check and replace brake fluid reservoir tank tube
Check steering system for fluid leakage
Turn steering wheel right and left to measure play at
steering wheel rim.
Measure while engine is running
Check steering wheel to see if it vibrates, pulls to one
side or requires unusual steering effort
(1) Check steering system for looseness and play
(2) Check power steering hoses and pipes for looseness
Measure toe-in, camber, caster and kingpin inclination
angles
01
Remarks
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 36
^ Gr 36
^ Gr 36
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 35
^ Gr 37
^ Gr 37
^ Gr 37
^ Gr 37
^ Gr 26
01-5
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