OEM 2006 Toyota Tundra Power Steering Pump

2006 Toyota Tundra Power Steering Pump Parts Q&A

• Q: How to Service and Repair a Power Steering Pump on 2006 Toyota Tundra?

  A: The first step to service and repair the Power Steering Vane Pump (1GR-FE) requires using a micrometer and caliper gauge to check the vane pump shaft and bushing oil clearance. Replace the vane pump assembly if this clearance is more than 0.07 mm (0.0028 inch). The first step requires using a micrometer to measure vane plate thickness with results between 1.405 and 1.411 mm (0.05531 to 0.05555 inch) standard range while a feeler gauge checks the maximum 0.03 mm (0.0012 inch) clearance between vane pump rotor and plate side faces; once out of spec, replace the entire vane pump assembly. Power steering fluid coating should be applied to the flow control valve to check its insertion into the valve hole of the front housing with its weight alone. Replacement of the vane pump assembly is required if the valve does not insert without assistance. To check for leakage close one hole while applying compressed air at 392 to 490 kPa (4 to 5 kgf/cm2, 57 to 71 psi) through the opposite side hole. The air should not escape from the end hole; if you detect leakage exchange the vane pump assembly. Vernier calipers should measure the free length of the spring to verify its minimum dimension of 36.9 mm (1.453 inch) before determining that the vane pump assembly requires replacement. A thorough examination of the pressure port union should be conducted to detect severe damage of the union seat which could lead to fluid leakage. If damage is present the vane pump assembly requires replacement.