Isuzu Trooper - Isuzu Trooper
1. Maintenance instruction
2. Maintenance
3. Engines
4. System of decrease in toxicity
5. Fuel system
6. Transmission and running gear
7. Suspension bracket and steering
8. Brake system
9. Body
10. Body electric equipment
11. Diagnostics of malfunctions
   11.1. Main malfunctions of coupling
   11.2. Main malfunctions of the manual transmission
   11.3. Main malfunctions of the driveshaft
   11.4. Main malfunctions of steering and suspension bracket
   11.5. Main malfunctions of the steering mechanism
   11.6. The main malfunctions of the steering mechanism with the hydraulic booster
   11.7. Main malfunctions of brakes
   11.8. Characteristic malfunctions of the engine and ways of elimination
   11.9. Characteristic malfunctions in the engine cooling system
   11:10. Characteristic malfunctions of a belt of the drive with a corrugated profile
   11:11. Characteristic malfunctions of a power supply system (carburetor engines)
   11:12. Characteristic malfunctions of signals of turn and emergency stop 11_13.htm
12. Electrical circuitries





Isuzu Trooper>> Diagnostics of malfunctions>> Main malfunctions of brakes

11.7. Main malfunctions of brakes

GENERAL INFORMATION

REASON
WAY OF ELIMINATION
Increase in the course of a pedal of a brake
The raised gaps between back blocks and drums because of malfunction of regulators
To make 10–15 braking, moving serially back and forth. If the course of a pedal does not change, then to repair regulators or to replace faulty details.
Wear of overlays of back brakes
To check the residual thickness of slips, if necessary to replace.
Wear of brake shoes (forward or back)
To replace in a set with one axis.
Hit of air in a hydraulic actuator of brakes

To remove air.

Sticking of a pedal of a brake (under the influence of constant effort the pedal leaves to a body floor)
Leak in a hydraulic actuator of brakes
Fill a tank to the top mark and ask the assistant to press a brake pedal. Examine supports of brakes, wheel cylinders, hoses, the union, tubes and limiters of pressure of brakes (dosing valves), establish places of a leak. Repair or replace faulty details.
Hit of air in a hydraulic actuator of brakes
To remove air.
The liquid brand in a hydraulic actuator does not correspond recommended (at a temperature below normal liquid evaporates)
To wash out system and to fill with fresh liquid of the recommended type.
Wear of sealing cuffs of the main cylinder of brakes, teases, wear or corrosion on the surface of the cylinder
To repair or replace the cylinder.
By the first pressing the pedal leaves to a floor, and at the subsequent braking the normal course of a pedal is restored
Sticking of blocks on a disk, a drum or details of fastening because of pollution or corrosion
To clear disks, drums, fingers of blocks, etc. details.
Brake pedal pliability (at constant effort the pedal distance from a floor decreases)
Leak in a hydraulic actuator of brakes
Fill a tank to the top mark and ask the assistant to press a brake pedal. Examine supports of brakes, wheel cylinders, hoses, the union, tubes and the dosing valves, establish places of a leak. Repair or replace faulty details.
Wear of sealing cuffs of the main cylinder of brakes, teases, wear or corrosion on the surface of the cylinder

To repair or replace the cylinder.

Reduction of the course of a pedal (the pedal course when braking decreases, can be followed by feeling of "rigidity" of a pedal)
Holding strap or sticking of pistons of wheel cylinders
To replace or repair a support or wheel cylinders.
Contamination of compensation openings in the main cylinder (liquid does not come back to a tank), a holding strap or sticking of pistons of the main cylinder
To replace or repair the main cylinder.
Jamming of details of the internal device of the vacuum amplifier
To check the vacuum amplifier in the following order. 1) Transfer the check point lever to neutral situation and start the engine. 2) Bring engine turns to 1500 rpm, release the accelerator pedal and press a brake pedal. 3) Slowly releasing a pedal, stop the engine. 4) Ask the assistant to disconnect a vacuum hose and the vacuum valve from the amplifier, watching a brake pedal at this time. 5) If the pedal is displaced to a floor, then the amplifier is faulty and it should be replaced.
The nature of braking very strongly depends on pressing a pedal ("skhvatyvaniye" of brakes)
Pollution of blocks brake fluid or oil
To establish the reason of pollution and to eliminate. To replace blocks in a set with one axis.
Wrong adjustment or jamming of cables of the drive of the emergency brake
To adjust the emergency brake, in case of jamming to replace cables.
Installation of overlays of other type, or weakening of slips on blocks
To replace blocks in a set with one axis.
Weakening of bolts of a persistent plate of a support
To tighten bolts.
Jamming of blocks of back brakes in a basic plate of a block
To clear and grease a basic plate and the persistent terminations of blocks. At strong development to replace a basic plate. It is forbidden to file the terminations of blocks.
The disk of a brake of other type, loss of frictional properties of a disk is established
To establish a disk of the corresponding type.
Weakening of an arm of a support
To tighten bolts.
"Soft" pedal of a brake
Hit of air in a hydraulic actuator of brakes
To remove air.
Deformation of blocks
To replace blocks in a set with one axis.
Violation extra earnings of blocks and drums (or disks)
To Proshlifovat the interfaced details.
Gaps between blocks and drums are not adjusted

To adjust.

For a stop of the car it is required to make big effort, braking sometimes is followed by a pedal pliability
Leakage of a hose of the vacuum amplifier of brakes
To tighten the union or to replace a hose.
Low-quality slips on blocks
To replace blocks in a set with one axis.
Deformation, breakage or bend of blocks
To replace blocks.
Support side play in fingers
Jamming of blocks of back brakes in a basic plate of a block., to Replace fingers and plugs. To clear and grease a basic plate and the persistent terminations of blocks with molybdenic lubricant. At strong development to replace a basic plate. It is forbidden to file the terminations of blocks.
Holding strap of pistons of wheel cylinders
To repair or replace cylinders.
The vacuum control valve of the amplifier is faulty
To check the valve in the following order. 1) Start the engine and bring engine turns to 1500 rpm, release the accelerator pedal and at once stop the engine. 2) Later not less than 90 sec. press a brake pedal. 3) If after 2 (or several) pressing a pedal the effort to brakes weakens, then the valve is faulty.
Jamming of details of the internal device of the vacuum amplifier
To check the amplifier in the following order. 1) Stop the engine and several times press a brake pedal that in the amplifier air came. 2) Transfer the check point lever to neutral situation, press a pedal of a brake and start the engine. 3) If the pedal leaves" forward (the smaller effort for deduction of a pedal in the pressed situation is felt), then the vacuum amplifier is serviceable. Otherwise the amplifier replace.
Contamination of compensation openings in the main cylinder (liquid does not come back to a tank), a holding strap or sticking of pistons of the main cylinder
To replace or repair the main cylinder. To blow openings compressed air. It is forbidden to clean openings a wire, a pencil or other objects.
Contamination or excess of hoses, tubes or unions
To blow the highway compressed air. To replace the damaged details.
Pollution of brake fluid the oil causing swelling of cuffs and their jamming in cylinders
To replace all cuffs, to wash out system DOT 3 liquid or equivalent.
Insufficient depression on the vacuum amplifier
To adjust or repair the engine.
Bad disinhibition of wheels
Jamming of a pedal on an axis
To grease an axis.
Malfunction of the vacuum amplifier
To check jamming of a rod and valves of the vacuum amplifier. The faulty amplifier to replace.
Wrong adjustment or jamming of cables of the drive of the emergency brake
To adjust the emergency brake, in case of jamming to replace cables.
Breakage or loss of elasticity of a returnable spring
To replace a spring, if necessary to replace blocks in a set with one axis.
Malfunction of regulators of a gap between blocks and drums
To repair or replace regulators.
Holding strap or sticking of pistons of wheel cylinders or main cylinder
To replace or repair cylinders.
Contamination of compensation openings in the main cylinder (liquid does not come back to a tank)
To blow compressed air.
Car drift when braking
Pressure in tires differs from norm
To restore pressure to normal.
Wear or damage of bearings of wheels
To replace bearings.
Pollution of slips on blocks on the one hand
To establish and remove the cause of pollution and to replace blocks in a set with one axis.
Deformation of blocks on the one hand or weakening of slips on blocks
To replace blocks in a set with one axis.
Easing or deformation of a support on the one hand
To tighten bolts or to replace a support.
Violation extra earnings of blocks and drums (or disks)
To Proshlifovat the interfaced details.
Weakening of a support on the one hand
To tighten bolts.
Jamming of the piston in the support cylinder
To replace a support or to repair.
Slips dampened
To make a trip with slightly pressed brake pedal to dry slips.
Weakening of bolts of fastening of details of a suspension bracket
To tighten, to replace worn-out details.
Malfunction of the regulator of pressure of anti-blocking system
To replace.
Vibration of brakes (it is felt on a pedal)
Pollution or deformation of blocks
To replace blocks in a set with one axis.
Weakening of bolts of an arm of a support
To tighten bolts.
Uneven wear of a disk (disks)

To Pereshlifovat or replace disks in a set with one axis.

The increased noise from brakes (squeal, a crash or a gnash)
Deformation of blocks
To replace blocks in a set with one axis.
Strong corrosion on the periphery of disks
To remove a rust.
Wear of slips, blocks adjoin to a disk or a drum the basis., to Replace blocks in a set with one axis
To Proshlifovat a disk (to pierce a drum) or to replace.
Breakage or loss of elasticity of springs of blocks (on drum brakes)
To replace springs.
The increased friction in the place of contact of a basic plate and the persistent terminations of blocks (on drum brakes)
To grease the terminations of blocks.
Teases, cracks or deep development of disks and drums
To replace disks (drums), to replace blocks in a set with one axis.
Blocks of other type are established
To replace blocks.
Vibration of a pedal of a brake
Ovality of drums or the raised beating of disks
To pierce or replace drums. To check a beating and thickness of disks, to proshlifovat or replace disks.