Service Manual

8 Tuff Torq Model K61A Hydrostatic TransaxleTransaxle Disassembly and Inspection
Measure the inside diameter of the bushings and the
outside diameter of the left and right axle shaft.
Table 1
Measurement Should be:
Bushings -
Inside Diameter
22.06-22.15mm
(.868-.872″)
Axle Shaft
Outside Diameter
21.98-22mm
(.865-.866″)
Clearance 0.08-0.17mm
(.003-.006″)
Maximum Wear Limit 0.5mm (.019″)
Measure the inside diameter of the axle bores in the
housing and the outside diameter of the left and right axle
shaft.
Table 2
Measurement
Should be:
Housing Axle Bore --
Inside Diameter
25.44-25.53mm
(1.001-1.005″)
Axle Shaft
Outside Diameter
25.32-25.38mm
(.996-.999″)
Clearance 0.06-0.21mm
(.002-.008″)
Maximum Wear Limit 0.5mm (.019″)
Take the filter out of the center case.
Note:
Replace the filter whenever transaxle is
disassembled for service.
Figure 14
Disconnect the C arm from the push valve bypass s haft.
Remove the two push pins, springs, and valves from the
center case.
Figure 15
Remove sleeve A1, sleeve A2, the two backup rings,
packings, balls, ball holders, springs, and bypass holders,
using air pressure if necessary.
Note: Remove the two check valve assemblies only if
necessary (leaking, sticking, or if extra-thorough cleaning
is necessary). Air pressurization will remove one valve;
the other can be pushed out from behind, after the center
section is removed.
3
1
2
Figure 16
1. Valve A1
2. Valve A2
3. Pressurize with air to
remove valves, if needed
(pressure fill plug shown
installed, with allen head
plug removed).