Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1992 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE
Check Valves
- Inspect check valve "A" by blowing air from each side of valve. See Fig 2. Ensure air does not flow from manifold side of valve to Air Switching Valve (ASV) side.
- Air should flow from Air Switching Valve (ASV) to manifold. If check valve does not function as described, replace valve.
- Inspect check valve "B". Ensure air does not flow from Black to Orange side of nozzle. Air should flow from Orange to Black side. If check valve does not function as described, replace valve.
Factory Service Tools
Use the Manual With the Right Hardware
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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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