ISM, ISMe, and QSM11 – 001-039   Idler Gear, Hydraulic Pump

Table of Contents

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TOC

Three idler gear assemblies are used:

  • Water pump idler gear (1)
  • Camshaft idler gear (2)
  • Hydraulic pump idler gear (3).

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SAE ‘A’ and SAE ‘B’ Removal

To remove the hydraulic drive idler gear assembly, remove:

  • Mounting spacer (1)
  • Rectangular seal (2)
  • The three twelve-point capscrews
  • Gear retainer (3)
  • Rectangular seal (4)
  • Front thrust bearing (5)
  • Idler gear (6)
  • Rear thrust bearing (7)
  • Idler gear shaft (8).

NOTE: SAE “A” drives do not use a rectangular seal (4) on the rear surface of the gear retainer.

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SAE ‘B-B’ Removal

To remove SAE B-B hydraulic drive idler gear assembly, remove:

  • Mounting Spacer (1)
  • Tapered Roller Bearing (2)
  • Gear Drive (3)
  • Tapered Roller Bearing (4)
  • Shim(s) (5)
  • Idler Gear Shaft (6)
  • Mounting Spacer (7)
  • Rectangular Seal (8).

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Mark or tag the individual pieces of the idler gear assembly and attach them together.

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Last Modified:  23-Jan-2009