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Bdu-10/21, Major repair – Cub Cadet BDU-10/21 User Manual

Page 16

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BDU-10/21

BDU-10/21

Major Repair

Page 16

Disassembly Procedures

Remove the motor thrust bearing assembly from the
housing.

Remove the swashplate assembly and cradle bearings
(BDU-10 only) from the housing.

NOTE: The cradle bearings in newer BDU-21L transmis-
sions are not removable from the housing. If damage is
present, a new housing kit is necessary.

Inspect the cradle bearing’s low friction coating for wear.
Inspect the swashplate and thrust bearing for any unusual
wear or damage. If damage to the swashplate or cradle
bearings is found then inspect the housing for possible
damage. Replace complete assemblies as necessary.

Remove the slot guide block from the displacement control
shaft.

10CC and 21CC Cylinder Block Kit Components

Swashplate, Cradle Bearings, Block Spring and
Washer Removed

Remove the input shaft lip seal retaining ring.

Pull the lip seal out of the housing bore. A hook type tool
may be used to pry the seal out. Care must be taken to
avoid damage to the housing bore, shaft sealing surface or
bearing. Once removed, the seal is not reusable.

Remove the bearing spacer washer.

Remove the pump shaft assembly from the housing.

Inspect the splines on the shaft for damage or unusual
wear.

Inspect the bearing. Replacement of the assembly is
recommended if any damage or excessive wear is found.

Remove the displacement control shaft from the housing.

Remove the displacement control shaft lip seal from the
housing. Care must be taken to avoid damage to the
housing bore.

Inspect the housing for damage.

BDU-21 Pump Shaft Components

BDU-10 Pump Shaft Components