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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) >> Disassembly

Oil Pump (1370 & 4401): Disassembly

  1. Remove oil pump retainer bolts and retainer from oil pump rear cover. See Figure or Figure . Remove oil pump body and pick-up tube assembly from mainshaft. Remove oil pump pins and spring from mainshaft.
  2. Remove oil pump front cover from mainshaft. Remove pick-up tube clamp. Remove pick-up tube and oil pump pick-up from oil pump body. Inspect oil pump housing, pins and pin bores for wear, galling or cracks. If visible, replace oil pump assembly.
NOTE: Ensure moving parts are lubricated with ATF before assembly.
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