LEXUS RX 300

1998 — 2003 of release

Removal, dismantling, check, assembly and installation of supports of brake mechanisms

Components of assembly of the brake mechanism of a forward wheel are presented on an illustration Assembly of the forward brake mechanism.

Assembly of the back brake mechanism


1 — Laying 2 — the Stopper 3 — the pumping Union 4 — the Support 5 — the Boot 6 — the Piston 7 — the Ring of a cover of the piston 8 — a piston Cover	9 — piston Consolidation 10 — the Directing plug 11 — the Main hairpin 12 — a support Bracket 13 — the External brake shoe 14 — the Internal antivizgovy slip 15 — Antivizgovaya a slip 16 — Holders of brake shoes 17 — the Internal brake shoe

Removal and dismantling

PERFORMANCE ORDER

Remove the corresponding wheel and temporarily fix a brake disk wheel nuts.
Turn out from a support a bolt, remove laying and disconnect a flexible brake hose from a support.

Prepare capacity for collecting brake liquid.

Turn out adjusting bolts of a support (on the back brake mechanism – one bolt) and remove a support from a bracket.
Remove brake shoes with antivizgovy slips and holders of blocks.
On the back brake mechanism remove, the main hairpin directing the plug with two epiploons and a cover of the main hairpin.
By means of a screw-driver remove a ring of a cover of the brake piston and a cover.
Lay between the piston and a support rags not to damage the piston at its extraction and, having submitted the compressed air to the union of the brake mechanism, вытолкните the piston from the cylinder.

Do not hold fingers between the piston and a support during piston removal by means of the compressed air.

Screw-driver remove piston consolidation:
- On the forward brake mechanism;
- Remove from a support bracket two directing pins;
- Remove directing plug from the top party of a directing pin;

Check

PERFORMANCE ORDER

Measure thickness of brake disks and overlays of brake shoes and compare the received values to requirements of Specifications of Head Brake system. Examine blocks and disks on existence of mechanical damages. If necessary replace blocks and/or disks.
Measure axial palpation of a disk at distance of 10 mm from its external edge and compare result of measurement to requirements of Specifications of Head Brake system. If necessary check axial люфт the bearing. Adjust disk palpation for what execute the following operations:
- Turn out two bolts of fastening of a bracket of a support to a rotary fist and remove a bracket;
- Remove a brake disk and establish it in situation, povyornuty from original on 1/5 turns;
- Tighten wheel nuts with effort of 103 Nanometers;
- Measure disk palpation in this situation and write down results of measurement;
- Repeat the last three operations for remained three provisions of a disk on a nave;
- If in any of provisions palpation of a disk meets requirements of Specifications of Head Brake system, establish a disk in this situation. Otherwise replace a disk and again measure its axial palpation;
- Establish a bracket of a support and tighten bolts of its fastening with demanded effort.

Assembly and installation

PERFORMANCE ORDER

Assembly and installation are made upside-down. Pay attention to the next moments:
- Do not allow oil and greasing hit on frictional overlays of brake shoes;
- At installation of boots track, that their metal parts reliably adjoined to a support bracket;
- Tighten all connections with demanded efforts;
- After installation fill brake system with liquid, pump over it and check system on leaks.