Cub Cadet BDU-10/21 - Manual (Page 17)

BDU-10/21
BDU-10/21
Inspect the control shaft journal bearing for excessive
wear. The BDU 10 control shaft journal bearing should be
0.4722 to 0.4733 while the BDU 21 control shaft journal
bearing should be 0.5904 to 0.5908.
Inspect the BDU-10 motor shaft journal bearing for exces-
sive wear. The BDU 10 motor shaft journal bearing should
be 0.4961 to 0.4998.
Inspect the BDU-21 motor shaft needle bearing for dam-
age.
If excessive wear or damage is found, replace the complete
housing assembly.
Inspect the center section for damage to the cylinder block
running surface.
Inspect the BDU-10 pump shaft journal bearing for exces-
sive wear. The journal bearing should be 0.4998 to 0.4961.
Inspect the needle bearing for damage. If any damage or
excessive wear is found, replace the complete center
section assembly.
Major Repair
Page 17
Disassembly Procedures Reconditioning and Replacement of Parts
After disassembly, all parts should be thoroughly cleaned
in a suitable solvent.
Inspect all parts for damage, nicks or unusual wear
patterns. Replace all parts having unusual, excessive wear
or discoloration.
Inspect the sealing surfaces, bearing surfaces, and shaft
splines. Polish the sealing areas on the shafts if neces-
sary. Replace any worn or damaged parts.
The running surfaces of the cylinder blocks MUST be flat
and free from scratches. If scratches or wear are found on
the running surface of the cylinder block or center section,
replace the parts.
Assembly Procedures
Clean and lightly oil parts prior to assembly of the BDU
transmission.
Be sure to torque all threaded parts to the recommended
torque levels.
Replace all o-rings, gaskets and shaft seals.
CAUTION: Most parts have critical high tolerance
surfaces. Care must be exercised to prevent damage
to these surfaces during assembly. Protect exposed
surfaces, openings, and ports from damage or for-
eign material.
Install the displacement control shaft.
Housing, Control Arm and Lip Seal