Isuzu Trooper (2000 year). Manual - part 176

5C–52 POWER ASSISTED BRAKE SYSTEM

Rear Disc Brake Caliper

Rear Disc Brake Caliper Disassembled View

306RW014

Legend

(1) Guide Bolt
(2) Lock Bolt
(3) Bleeder with Cap
(4) Caliper Body

(5) Piston Seal
(6) Piston
(7) Dust Boot: Piston
(8) Dust Boot Ring
(9) Dust Boot: Guide Bolt and Lock Bolt

Disassembly

1. Remove guide bolt.
2. Remove lock bolt.
3. Remove dust boot; guide bolt and lock bolt.
4. Remove the dust boot ring using a small screwdriver. 

302RS016

5C–53

POWER ASSISTED BRAKE SYSTEM

5. Insert a block of wood into the caliper and force out

the piston by blowing compressed air into the caliper
at the flexible hose attachment. This procedure must
be done prior to removal of the dust boot.

WARNING: DO NOT PLACE YOUR FINGERS IN
FRONT OF THE PISTON IN AN ATTEMPT TO CATCH
OR PROTECT IT WHEN APPLYING COMPRESSED
AIR.  THIS COULD RESULT IN PERSONAL INJURY.

CAUTION: Use just enough air to ease the piston
out of the bore. If the piston is blown out, it may be
damaged.

302RS017

6. Remove dust boot: piston.
7. Remove piston seal.
8. Remove bleeder with cap.
9. Remove caliper body.

Inspection and Repair

Make necessary parts replacement, if wear, damage,
corrosion or any other abnormal conditions are found
through inspection.
Check the following parts:

D

Rotor

D

Cylinder body

D

Cylinder bore

D

Piston

D

Guide bolt, lock bolt

D

Support bracket

NOTE: The piston dust seal and dust boot are to be
replaced each time the caliper is overhauled. Discard
these used rubber parts and replace with new ones.

Reassembly

1. Install caliper body.
2. Install bleeder with cap and tighten the cap to the

specified torque.

Torque: 8 N·m (69 lb ft)

3. Install piston seal and apply special rubber grease to

the piston seal and cylinder wall, then insert the piston
seal into the cylinder. The special rubber grease is
included in the repair kit.

302RS018

4. Install piston.
5. Install piston dust boot; when inserting the piston into

the cylinder, use finger pressure only and do not use a
mallet or other impact tool, since damage to the
cylinder wall or piston seal can result.

302RS019

5C–54 POWER ASSISTED BRAKE SYSTEM

6. Install dust boot ring and apply special grease

(approximately 1g) to the piston and attach the dust
boot to the piston and caliper. Insert the dust boot ring
into the dust boot.

302RS020

7. Install guide bolt and lock bolt dust boot.
8. Install lock bolt and guide bolt and tighten the bolt to

the specified torque.

Torque: 74 N·m (54 lb ft)

9. Install the dust boot on the support bracket after

applying special grease (Approx. 1g) onto the dust
boot inner surface. Also apply special grease onto the
lock bolt and guide bolt setting hole of the support
bracket.

302RS021

5C–55

POWER ASSISTED BRAKE SYSTEM

Main Data and Specifications

General Specifications

Type

Floating, pin slide

Pad dimension

33 cm

@

 (5.11 in

@

)

Adjusting method

Self–adjusting

Piston diameter

41.3 mm (1.63 in)

Disc type

Ventilated

Disc thickness

18 mm (0.71 in)

Disc effective diameter

269.2 mm (10.60 in)

Torque Specifications

E05RW005