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Home >> Jeep >> 2008 >> Commander Base, 3.7 K, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (545RFE Automatic Transmission (Service Information)) >> Automatic Transmission - 545RFE - Service Information >> Pump-Oil >> Disassembly >> Oil Pump

Oil Pump

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Fig 1: Pump Housing, Oil Filter Seal, Seal Ring, Reaction Shaft Support & Pump Valve Body
GC0051689Courtesy of CHRYSLER LLC
1 - PUMP HOUSING 4 - REACTION SHAFT SUPPORT
2 - OIL FILTER SEAL 5 - PUMP VALVE BODY
3 - SEAL RING (5) -
  1. Remove the bolts holding the reaction shaft support (4) to the oil pump. See Fig 1.
  2. Remove the reaction shaft support (4) from the oil pump. See Fig 1.
  3. Remove all bolts holding the oil pump halves together. See Fig 1.
  4. Using suitable prying tools, separate the oil pump sections by inserting the tools in the supplied areas and prying the halves apart.
    NOTE: The oil pump halves are aligned to each other through the use of two dowels. Be sure to pry upward evenly to prevent damage to the oil pump components.
    Fig 2: Separator Plate, Gears, Oil Pump Flapper Valve, Oil Pump Housing, Dowel & Screw
    GC0005293Courtesy of CHRYSLER LLC
    1 - SEPARATOR PLATE 5 - DOWEL (2)
    2 - DRIVEN GEAR (2) 6 - DRIVE GEAR
    3 - FLAPPER VALVE 7 - SCREW
    4 - PUMP HOUSING
  5. Remove the screws (7) holding the separator plate (1) onto the oil pump housing (4). See Fig 2.
  6. Remove the separator plate (1) from the oil pump housing (4). See Fig 2.
  7. Mark all gears for location. The gears are select fit and if the oil pump is to be reused, the gears must be returned to their original locations.
  8. Remove the oil pump flapper valve (3) from its pocket in the pump housing.
  9. Remove the oil pump gears (2, 6) from the oil pump housing (4). See Fig 2.
    Fig 3: T/C Switch Valve, Retainer & Oil Pump Valve Body
    GC0005295Courtesy of CHRYSLER LLC
    1 - RETAINER
    2 - T/C SWITCH VALVE
    3 - OIL PUMP VALVE BODY
  10. Remove the oil pump valve retainers (1) and associated valve (2) and spring one at a time. Mark the combination of components as a group and tag them as to the location from which they were removed. See Fig 3.
    Fig 4: Oil Pump Valve Body, T/C Regulator Valve, T/C Limit Valve & Main Regulator
    GC0005294Courtesy of CHRYSLER LLC
    1 - T/C REGULATOR VALVE
    2 - T/C LIMIT VALVE
    3 - MAIN REGULATOR VALVE
    4 - OIL PUMP VALVE BODY
  11. Remove the T/C regulator valve (1), T/C limit valve (2), and regulator valve (3). See Fig 4.