2003 Lexus LX 470FACTORY OEM SERVICE PROCEDURE

Torque Specification

TORQUE SPECIFICATION

Part tightened N.m kgf.cm ft.lbf
Fuel line
Union bolt type 39 400 29
Flare nut type
for use with SST		 34 345 25
38 380 28
Fuel pressure pulsation damper x Delivery pipe
for use with SST		 33 340 24
39 400 29
Fuel pressure regulator x RH delivery pipe 7.5 80 66 in..lbf
Fuel tank vent tube set plate x Fuel tank 3.5 35 31 in..lbf
Front fuel pipe x Delivery pipe 39 400 29
Front fuel pipe x Lower intake manifold 7.5 80 66 in.lbf
Fuel return pipe x LH delivery pipe 7.5 80 66 in.lbf
Delivery pipe x Lower intake manifold 18 185 13
Fuel sender gauge x Fuel tank 1.5 15 13 in.lbf
Fuel tank x Body 39 400 29
Drain plug x Fuel tank 6.5 65 58 in.lbf
Fuel tank filler pipe x Fuel tank 3.5 35 31 in.lbf
Cutoff valve cover x Fuel tank 1.5 15 13 in.lbf
Accelerator pedal position sensor x Body 5.0 51 44 in.lbf
Throttle body x Upper intake manifold, Lower intake manifold 18 185 13
Upper intake manifold, Accelerator cable bracket x Lower intake manifold 18 185 13
ECT sensor x Front water bypass joint 20.4 208 15
Knock sensor x Cylinder block 45 450 33
Heated oxygen sensor x Exhaust manifold 44 450 32
Heated oxygen sensor x Front exhaust pipe 20 200 14
No.1 rear seat x Body 41 420 30
MAF meter x Air cleaner 1.68 17 15 in.lbf
Fuel pump resistor x Body 12 122 8.8
Factory Service Tools

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When to See a Mechanic

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

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

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