Service Manual

HY13-1521-M2/US Service Manual
General Information Series HB Hydrostatic Transmission
Remove the complete drive
motor
Remove the motor from the
nosecup by tapping cast iron
housing with a soft-face
mallet and gently prying on
the flange surface of the
motor taking care not to
damage the aluminum
nosecup.
Remove the nosecup
Remove the nosecup from
the endblock by removing the
two (2) ½-20 x 2 ¾” long
socket head caps screws
with a 5/16” allen head
socket.
Remove the transfer tubes
Remove the transfer tubes
by gently pulling the tubes
out of the endblock. It may
be necessary to rotate the
tubes while pulling.
Remove the charge pump
cover seal snap ring
Using snap ring pliers
remove the charge pump
cover snap ring.
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Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, Tennessee USA