New Holland LS140 Workshop Manual page 183

Piston and Shoe Assemblies
Replace the rotating groups if:
5. The piston skirt area, 1, shows signs of scratches
or wear.
6. The edges of the shoes, 2, are worn (shoe roll)
from contact with the cam plate.
7. There is wear on the underside of the slipper be-
tween the slipper and shoe plate at 3.
8. The shoes are a loose, sloppy fit on the ball end
of the piston at 4.
9. The flat surfaces of the shoes, 5, show metal flak-
ing or are deeply scratched. Light or shallow
scratches in the shoes will not cause any harm.
Do not lap the shoes.
Shoe Plate
1. Check for cracks in the shoe plate, 1, at the holes
for the spherical washer or shoes. The shoe plate
is only available as part of the rotating group.
2. Check for wear in the area of the slippers, 2. This
area should be flat, smooth, and have no
grooves.
3. Check the internal splines of the piston block, 3,
for wear.
Spherical Washer (pivot), 4
1. Check for wear on the top surface where the
shoe plate fits. The spherical washer is only
available as part of the rotating group.
2. Check the sides, rolled area for cracks.
Rotating Piston Block
Replace the rotating group if:
3. Cylinders, 1, are worn or scored so the pistons do
not move freely.
4. Surface, 2, is worn or grooved or shows metal
buildup. Nicks must not extend from the cylinders
to the edge of the raised area, 3.
5. The pistons have side play in the piston block.
SECTION 29 - HYDROSTATIC TRANSMISSION
29-38
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