2003 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Torque Specification

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

Brake master cylinder assyΒ 

TORQUE SPECIFICATION

Part Tightened N.m kgf.cm ft.lbf
Bleeder plug 11 112 8
Brake pedal sub-assy x Brake pedal support sub-assy 34.3 350 25
Brake pedal support sub-assy x Body 14.2 145 10
Brake pedal support sub-assy x Brake pedal support reinforcement 34.3 350 25
Front disc brake cylinder x Sttering knuckle 123 1,254 91
Flexible hose x Disc brake cylinder assy rear 31 316 23
Rear disc brake cylinder mounting x Axle hub 105 1,071 77
Rear disc brake cylinder mounting x Disc brake cylinder assy rear 88 897 65
Flexible hose x Disc brake cylinder assy rear 31 316 23
Front speed sensor x Steering knuckle 8.3 85 73 in.lbf
Rear speed sensor x Axle hub 8.3 85 73 in.lbf
Skid control ECU assy set bolt 5.0 51 44 in.lbf
Junction block assy x Reinforcement 8.4 85 74 in.lbf
Master cylinder solenoid set bolts 32 326 24
Brake master cylinder x Pin 7.8 80 69 in.lbf
Rod Operating adapter lock nut 26 260 19
Master cylinder push rod clevis lock nut 26 260 19
Brake booster pump x Brake booster accumulator 57 585 42
Brake master cylinder x Brake booster pump bracket No. 2 7.8 80 69 in.lbf
Master cylinder solenoid x Brake booster pump assy wire harness 2.9 30 26 in.lbf
Brake actuator tube No. 1 union nuts 14 (15) 143 (155) 10(11)
Brake line union nut 14 (15) 145 (158) 10 (11)
Brake master cylinder x Brake actuator bracket No. 1 7.8 80 69 in.lbf
Brake master cylinder x Brake actuator bracket No.3 7.8 80 69 in.lbf
Brake master cylinder x Master cylinder reservoir 1.7 17 15 in.lbf
Brake master cylinder set nuts 14 145 10

(): For use without SST

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.