Service Manual

9Tuff Torq Model K61A Hydrostatic Transaxle Transaxle Disassembly and Inspection
Carefully inspect the packings (o-rings) to ensure they
are not deformed, cut, or scratched. Use new packings
on reassembly.
IMPORTANT: When removing the sleeves, note that
their valves are different, and therefore not
interchangeable. The A1 valve, located farthest from
the axle, has a small hole in it, in addition to the
large hole in the center. For reassembly purposes,
mark the port from which this valve is removed.
1
Figure 17
1. Note hole
Loosen the three bolts and remove the magnet from the
center case. Clean the magnet thoroughly; use air
pressure if necessary.
Figure 18
Make a mark on the top of the motor thrust bearing
housing, for easy identification during reassembly.
Remove the motor shaft assembly, along with the center
case assembly, from the upper case.
IMPORTANT: Pay close attention to the contact
surfaces of the center case and cylinder blocks to
prevent damage.
Figure 19
Remove the cylinder block from the pump shaft.
IMPORTANT: Be sure the pistons do not fall out of
the block during removal.
Figure 20
Inspect the five cylinder bores for burrs or scoring. The
cylinder block and center section must be replaced if any
scratch is deep enough to catch on a fingernail.
Figure 21
Inspect the five pistons and all parts of the cylinder block
assembly for wear or damage.
Replace the center case and both cylinder block
assemblies if any cylinder block assembly parts are
damaged.
Figure 22