Page 818 of 1463

SUSPENSION DIAGNOSIS 2A-3
DIAGNOSIS
GENERAL DIAGNOSIS
Checks
Loosened Mountings
Damaged or Worn wheel Bearing
Damaged Shock Absorber
Damaged TireAction
Retightening
Replace
Replace
Replace
Abnormal Noises
Checks
Broken Stabilizer Bar
Faulty Shock AbsorberAction
Replace
Replace
Vehicle Rolling
Checks
Over Inflated Tire
Faulty Shock Absorber
Loosened wheel Nut
Bent or Broken Coil Spring
Damaged Tire
Worn BushingAction
Pressure Adjustment
Replace
Tighten as Specified
Replace
Replace
Replace
Poor Riding
Problems in the steering, the suspension, the tires, and
the wheels involve several systems. Consider all systems
when you diagnose a complaint. Some problems, such
as abnormal or excessive tire wear and scuffed tires,
may by the result of hard driving. Always road test thevehicle first. If possible, do this road test with the
customer.
Proceed with the following preliminary checks. Correct
any substandard conditions.
Checks
Incorrect Wheel Alignment
Excessive Resistance of Lower Arm Ball Joint
Insufficient Tire Pressure
Faulty Power Steering
Action
Repair
Replace
Adjust
Repair or Replace
Hard Steering
Checks
Deformed Arm Assembly
Worn Bushing
Bent or Broken Coil Spring
Difference Between L/H & R/H HeightsAction
Replace
Replace
Replace
Adjust
Vehicle Pulls to Right or Left
Page 819 of 1463
2A-4 SUSPENSION DIAGNOSIS
Checks
Worn or Broken Coil SpringChecks
Incorrect Front wheel Alignment
Worn or Loosened Lower Arm Bushing
Action
Replace
Repair or Replace
Steering Instability
Action
Replace
Vehicle Bottoming
Page 853 of 1463

2D-2 REAR SUSPENSION
DIAGNOSIS
NOISE (DURING STRAIGHT DRIVING)
Check
Lack of Oil
Low Viscosity of Oil
Insufficient Oil
Excessive Backlash of Ring Gear
Worn or Damaged Tooth of Ring and Pinion Gear
Worn or Damaged Drive Pinion Bearing
Worn Spline of Side Bearing and Side Gear
Bent Axle Housing
Bent Differential Case
Worn Pinion Shaft
Incorrect Drive Pinion Preload
Incorrect Contact of Ring Gear and PinionAction
Replenish
Replace
Replace
Adjust
Replace
Replace
Replace
Replace
Replace
Replace
Adjust
Retightening
NOISE (DURING TURNING)
Check
Worn or Damaged Tooth of Pinion or Side Gear
Worn Pinion Shaft
Excessive Backlash of Pinion Gear and Side Gear
Excessive End-play of Rear Axle Shaft
Incorrect Contact of Side Gear and Differential Case
Axle Housing Crack
Bent or Poor Installation of Drive Pinion Oil Seal
Damaged or Torn Drive Pinion Oil Seal
Loosened Bearing Collar
Worn or Damaged Universal Joint
Worn of Damaged Axle Shaft BearingAction
Replace
Replace
Replace
Adjust
Replace
Replace
Replace
Replace
Replace
Replace
Replace
OIL LEAKAGE
Check
Excessive Oil
Faulty Seal of Carrier Contact Surface
Axle Housing Crack
Worn or Damaged Oil SealAction
Adjust
Repair
Replace
Replace
Page 854 of 1463
REAR SUSPENSION 2D-3
HEATING
Check
Lack of Oil
Insufficient Backlash of Gears
Excessive Preload of BearingAction
Replenish
Adjust
Adjust
Page 901 of 1463

REAR DRIVE AXLE 3D-3
Checks
Worn or Damaged Tooth of Pinion or Side Gear
Worn Pinion Shaft
Excessive Backlash of Pinion Gear and Side Gear
Excessive End-play of Rear Axle Shaft
Incorrect Contact of Side Gear and Differential Case
Axle Housing Crack
Bent or Poor Installation of Drive Pinion Oil Seal
Damaged or Torn Drive Pinion Oil Seal
Loosened Bearing Collar
Worn or Damaged Universal Joint
Worn or Damaged Axle Shaft BearingChecks
Excessive Oil
Faulty Seal of Carrier Contact Surface
Axle Housing Crack
Worn or Damaged Oil SealChecks
Lack of Oil
Low Viscosity of Oil
Insufficient Oil
Excessive Backlash of Ring Gear
Worn or Damaged Tooth of Ring and Pinion Gear
Worn or Damaged Drive Pinion Bearing
Bent Axle Housing
Bent Differential Case
Worn Pinion Shaft
Incorrect Drive Pinion Preload
Incorrect Contact of Ring Gear and Pinion
DIAGNOSIS
NOISE (DURING STRAIGHT DRIVING)
Action
Replenish
Replace
Replace
Adjust
Replace
Replace
Replace
Replace
Replace
Adjust
Retightening
OIL LEAKAGE
Action
Adjust
Repair
Replace
Replace
NOISE (DURING TURNING)
Action
Replace
Replace
Replace
Adjust
Replace
Replace
Replace
Replace
Replace
Replace
Replace
HEATING
Checks
Lack of Oil
Insufficient Backlash of Gears
Excessive Preload of BearingAction
Replenish
Adjust
Adjust
Page 917 of 1463

4A-2 HYDRAULIC BRAKES
Check
Dirty or Lack of Fluid
Air in Brake System
Faulty Brake Booster
Poor Contact of Pad or Lining
Oil or Grease on Pad
Faulty Auto Adjuster
Over Heated Rotor Due to Dragging Pad or Lining
Clogging Brake Line
Faulty Proportioning ValveCheck
Incorrect Tire Pressure Between Left and Right
Poor Contact of Pad or Lining
Oil or Grease is Applied to Pad or Lining
Bent or Uneven Wear of Drum
Incorrectly Mounted Wheel Cylinder
Faulty Auto AdjusterAction
Repair
Retighten
Replace
Replace
Repair
Repair
Lubricate
Retighten Check
Incorrectly Mounted Back Plate or Caliper
Loosened Bolt of Back Plate or Caliper
Crack or Uneven Wear of Brake Drum or Disc
Pad or Lining Sticking to Contact Surface
Excessive Clearance Between Caliper and Pad
Uneven Contact of Pad
Lack of Lubrication
Loosened Suspension
DIGNOSIS
NOISE OR VEHICLE VIBRATION WHEN APPLIED BRAKE
PULLS TO ONE SIDE WHEN BRAKING
Action
Adjust
Repair
Replace
Replace
Repair
Replace
Action
Replenish or Replace(Check eventual leakage)
Bleeding
Replace
Repair
Replace
Replace
Repair
Repair
Repair
POOR BRAKING
( If low cut-in : Adjust )
( If Leakage : Replace )
Page 918 of 1463
HYDRAULIC BRAKES 4A-3
Check
Air in Brake system
Fluid Leaking
Excessive Clearance Between Push Rod and M/cylinder
Parking Brake is not Fully Released
Incorrect Adjustment of Parking Brake
Weak Return Spring of Brake Pedal
Incorrect Pedal Freeplay
Broken Rear Drum Brake Shoe Return Spring
Lack of Lubrication
Damaged Master Cylinder Check Valve or Piston Return SpringAction
Bleeding
Repair
Adjust
Repair
Adjust
Replace
Repair
Replace
lubricate
Replace
INCREASING PEDAL STROKE (PEDAL GOES TO FLOOR)
OR BRAKE DRAGGING
Check
Insufficient Clearance Between Push Rod and Master Cylinder
Worn Brake Lining
Oil or Grease on Lining
Binding Parking Brake Cable
Faulty Auto Adjuster
Excessive Lever StrokeAction
Adjust
Replace
Replace
Replace
Replace
Adjust or Check Cable
POOR BRAKING OF PARKING BRAKE
Page 922 of 1463

HYDRAULIC BRAKES 4A-7
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
BLEEDING THE BRAKES
For Master Cylinder Replacement
1. Add oil after master cylinder replacement.
2. Run the engine and depress the brake pedal several times
to build pressure and then keep the pedal fully depressed.
3. Loosen the screws of primary and secondary pipe at the
master cylinder outlets to bleed air.
4. Repeat above step No.3 several times until there are no
more air bubbles.
5. Bleed air in the system at the hydraulic unit outlet pipe and
wheel if pressure building is not enough by depressing the
pedal only after above air bleeding.
For Caliper and Brake Hose Replacement
1. Check the oil level from the oil reservoir and refill if necessary.
2. Run the engine and depress the pedal several times to
build pressure and then keep the pedal fully depressed.
3. Connect a vinyl tube to the caliper breather and prepare a
container to coentain brake oil.
4. Loosen the breather screw until there are no more bubbles.
5. Bleed air in the system at four (4) wheels in order as shown
in right figure if pressure building is not enough by depressing
the pedal after above air bleeding.
Tightening Torque
9 - 14 Nm
Item
Front Bleeder Screw
Rear Bleeder Screw
Notice
lDo not reuse the bled brake fluid.
lAlways bleed the air after replacing brake fluid or
master cylinder, caliper, brake hose and pipe.
lAlways operate in normal order.