Nissan Patrol, Ford Maverick

1988-1997 of release

Repair and car operation



Nissan Patrol and Ford Maverik
+ Cars of the Nissan Patrol and Ford Maverick series
+ Diagnostics of malfunctions
+ Settings and routine maintenance
+ Engine
+ Systems of cooling, heating and air conditioning
+ the Power supply system and production of the fulfilled gases
+ Systems of decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Transmission
+ Coupling
- Brake system
   Service of the main brake cylinder (GTTs)
   Service of the vacuum amplifier (servo-driver) of brakes
   Service of forward disk brake mechanisms
   Service of back drum-type brake mechanisms
   Service of back disk brake mechanisms
   Pumping of hydraulic system
   Service of a pedal of a brake
   Removal and valve installation - a pressure regulator
   Service of the parking brake
+ Forward and back bridges, running gear and steering
+ Body
+ Onboard electric equipment




Service of forward disk brake mechanisms

For performance described below procedures the following special tools be required: a tsiferblatny measuring instrument (for check of size of palpation of a disk), a noniusny calliper (for measurement of thickness of a disk) and a steelyard (for measurement of effort of a prikhvatyvaniye of brakes).

Check of a condition and replacement of brake shoes

 PERFORMANCE ORDER

  1. To Poddomkratta a car front also establish it on props. Remove forward wheels.
  2. Through an observation port in the support case (see an accompanying illustration) estimate residual thickness of frictional overlays of brake shoes. If the thickness of a slip any of blocks appears less admissible (see size tables and adjustments at the end of the Management) or if blocks are polluted by greasing or brake liquid, it is necessary to make replacement of all four blocks on brake mechanisms of both wheels.
1 — a directing finger
2 — blocks in an observation port
3 — a support

If blocks appear are polluted, it is necessary to find out and eliminate the reason of leaks also.

  1. By means of a syringe pump out from the GTTs tank about two thirds of nominal amount of brake liquid.

The used liquid is not subject to the repeated use.

  1. Removal of liquid is made for the purpose of the prevention of its overflowing too much the tank at an utaplivaniye of pistons of supports for replacement of blocks.

Do not delete from the tank all liquid as it will cause need of pumping of hydraulic system.

  1. Give a bolt of the bottom directing finger and turn the support case up on the top finger (see an accompanying illustration), having opened access to brake shoes, adjusting laying and holders in an anchor bracket (directing blocks) a support.
1 — a support
2 — blocks
  1. Remember the adjusting provision of components and remove from an anchor bracket holders, blocks and adjusting laying.
  2. Check adjusting laying and holders on existence of signs of wear and damages. Replace defective components.
  3. Establish adjusting laying on blocks, then establish in an anchor bracket in the landing provisions of a block (with laying) and holders. Moderately grease holders with silicone greasing.
  4. Push the piston perpendicularly into the support cylinder. In case of need use a clamp.
  5. Make sure of freedom of sliding of a support on directing fingers, then lower it on blocks.
  6. Establish the bottom directing finger and tighten its bolt with demanded effort.
  7. After completion of replacement of blocks of both brake mechanisms, several times squeeze out a brake pedal for the purpose of a usadka of blocks on disks. In case of need add brake liquid in the tank to demanded level.
  8. Establish forward wheels and lower the car on the earth.
  9. Make trial runs of the car, having checked serviceability of functioning of brakes.

 Major maintenance of a support

 PERFORMANCE ORDER

  1. To Poddomkratta a car front also establish it on props. Remove forward wheels. Components of a support of the forward disk brake mechanism are shown on an accompanying illustration.
1 — an anchor bracket
2 — - the piston
3 — - a protective cover of a directing finger
4 — - a directing finger
5 — - a boot
6 — - a piston cuff
7 — - the case
8 — - a protective cover of a directing finger
9 — - bolts
10 — - adjusting laying
11 — - a brake shoe
12 — - a brake shoe
13 — - adjusting laying
14 — - directing fingers
15 — - the pumping gate
16 — - a dustproof cap
17 — - fixing clips (holders)
  1. Give a shtutserny bolt and disconnect a brake hose from a support. To Zakuporta the hose end in order to avoid hit in hydraulic system of dirt and for the purpose of minimization of losses of brake liquid.
  2. Give bolts of directing fingers of a support and remove the case of the last from assembly of an anchor bracket.
  3. Press wooden whetstone to anchors of blocks of the case of a support and carefully squeeze out the piston of the support cylinder, submitting air under low pressure to an opening under installation of a hydraulic hose on the support case.

Excessive pressure of air can become the reason of pushing out of the piston with a high speed that is fraught with receiving traumas and piston damage.

  1. Remove a boot from the piston and take from the cylinder a piston cuff.

For extraction of a cuff use the blunt tool which has been preferably made of plastic or a tree.

  1. Take from an anchor bracket directing fingers and components of blocks.
  2. Wash out the cylinder of a support and the piston pure brake liquid.
  3. Check a cylinder mirror on existence of cavities, traces of corrosion, signs of wear and damages. In case of need replace the support case.

Minor defects can be removed by means of a thin emery paper.

  1. Check the piston on existence of cavities, traces of corrosion, signs of wear and damages. In case of need make replacement.

Do not try to polish the piston a thin emery paper as it will lead to damage of its facing layer.

  1. Check a condition of components of the blocks, directing fingers and an anchor bracket. Replace defective details.
  2. Will throw out all rubber components which have been removed from assembly of a support.
  3. Grease a new cuff of the piston and a boot with greasing for rubber components and establish a cuff in a cylinder flute. Track correctness of landing of a cuff in a flute, - it should not appear overwound.
  4. Put on a boot the piston and grease the last with pure brake liquid.
  5. Completely drown the piston in the cylinder of a support and fix a boot in a flute on the brink of the cylinder.
  6. Grease directing fingers and an internal part of their protective covers with greasing for rubber components and establish assemblies of fingers with covers in an anchor bracket.
  7. Establish in an anchor bracket components of blocks.
  1. Pick up a steelyard to a hairpin of fastening of a wheel and measure effort of resistance of a nave a provorachivaniya (see an accompanying illustration). Write down result of measurement. In case of need check adjustment of a pretightness of the stupichny bearing.
  1. By means of the tsiferblatny measuring instrument fixed on a component of a forward suspension bracket with pressed to a face surface of a brake disk by a plunzher, measure size of palpation of a disk (see an accompanying illustration). If the result of measurement leaves out of admissible limits (see size tables and adjustments at the end of the Management), pierce a disk, or make replacement.
  1. By means of a noniusny calliper measure thickness of a brake disk in several points on forming. In case of need pierce a disk or replace it.
  2. Dress the support case on assembly of an anchor bracket, screw and tighten with demanded effort bolts of directing fingers. Connect to a support a brake hose and tighten a shtutserny bolt with demanded effort.
  3. Pump over hydraulic brake system.
  4. For five seconds squeeze out a brake pedal.
  5. Release a pedal and turn a nave of a forward wheel on ten turns.
  6. By means of a steelyard measure effort of resistance to a nave a provorachivaniya.
  7. Subtract result of the first measurement from result of the effort of a prikhvatyvaniye of a brake second for the purpose of definition. The maximum admissible value makes 7.2 kgfs, at its excess find getting jammed components and make necessary repair.

Removal and installation of a brake disk

Removal

 PERFORMANCE ORDER

  1. Remove assembly of a nave of a forward wheel.
  2. Give fixing bolts and separate a disk from a nave.

Installation

Installation is made upside-down.

 PERFORMANCE ORDER

  1. Tighten bolts of fastening of a disk to a nave with demanded effort.
  2. Adjust a pretightness of stupichny bearings.







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