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Home >> GMC >> 1993 >> Yukon Standard >> Repair and Diagnosis >> Transmission >> Transfer Case >> Transfer Case - Diagnosis & Overhaul - Borg-WARNER 1370, 4401 & 4470 >> Component Disassembly & Reassembly >> Oil Pump (1370 & 4401) >> Reassembly

Oil Pump (1370 & 4401): Reassembly

  1. Install oil pump pick-up on pick-up tube. Install pick-up tube and clamp on housing. Install oil pump front cover with TOP marking on edge, readable from front case side. Install oil pump spring between oil pump pins and assembly into mainshaft bore. Ensure flats of oil pump pins are facing rear case half.
  2. Install oil pump housing and ensure pins are riding against inside of pump housing. Install oil pump rear cover with TOP marking on edge, readable from rear case side. The words TOP on front and rear oil pump covers are on same side of assembled pump housing. Install oil pump retainer and bolts with tabs facing front case half. Rotate mainshaft while tightening bolts to ensure oil pump turns freely. Tighten bolts to specification. See TORQUE SPECIFICATIONS  .
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