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Home >> Suzuki >> 1990 >> Sidekick JS >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Overhaul - THM 400) >> Component Disassembly & Reassembly >> Oil Pump >> Disassembly
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Oil Pump: Disassembly

WARNING: This page does not describe the selected car, but rather 124 other vehicles, including the 1991 Chevrolet Pickup, 1991 Chevrolet Cab & Chassis, 1988 GMC Vandura Special, 1988 GMC Vandura, and 1988 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.
  1. Compress regulator boost valve bushing against pressure regulator spring. Carefully remove snap ring.
    CAUTION: Pressure regulator spring is very tightly compressed.
  2. Remove regulator boost valve bushing, valve and pressure regulator spring. Remove regulator valve, spring retainer, and spacer(s) (if present). Remove 5 pump cover attaching bolts noting different lengths and positions. Separate cover from body. Mark drive and driven gears for reassembly reference and remove from pump body. See Figure.
  3. Reassembly of pump gears in same position will ensure quietest operation. Remove retaining pin and bore plug from end of regulator bore. Remove 2 oil seal rings from cover. Remove pump-to-forward clutch housing thrust washer.
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