TSE DPT40-B, Owner'S Manual

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Series 90 Minor Repair 9
9.4 Minor Repairs - Motor
Remove Flushing Shuttle
Spool
Remove Plugs and
Springs
Install Flushing Shuttle
Spool
Torque Plugs
Remove Screw Charge
Relief
Screw Adjustable Charge
Relief Valve
90000339 90000338
90000341 90000340
90000343 90000342
90000345 90000344
9.4.1 Loop Flushing and Charge Relief
Valves
9.4.1.1 Loop Flushing Valve
1. Using an 11/16
inch wrench, remove the hex
plugs and O-rings from both sides of the valve.
Remove the springs, shoulder washers, and flush-
ing valve shuttle spool. Note orientation of the
washers. Remove the flushing valve spool.
2. Inspect parts for damage or foreign material.
NOTE: Early production motors used a small
diameter shuttle valve spool. Late production mo-
tors use a larger diameter spool.
3. Install flushing valve spool in end cap, then install
the shoulder washers (with shoulders facing “out”)
and springs on each end of the spool. Install the
hex plugs with O-rings, and torque to 41 Nm (30
ft•lbf) on 030 through 100 motors or 68 Nm (50
ft•lbf) on 130 motors.
9.4.1.2 Motor Charge Relief Valve
1. Remove the shim adjustable charge relief valve
plug with a 7/8
inch hex wrench. Before removing
the screw adjustable relief valve plug, mark the
plug, lock nut, and housing so as to be able to
maintain the original adjustment when assem-
bling. Remove the screw adjustable charge relief
valve plug by loosening the lock nut with a 1-1/16
inch hex wrench for 030 through 100 units, or a 1-
5/8
inch hex wrench for 130 units, and unscrewing
the plug with a large screwdriver or 1/2
inch hex
wrench.
2. Remove the spring and valve poppet.
3. Inspect the poppet and mating seat in the end cap
for damage or foreign material. When inspecting
shim adjustable valves, do not alter the shims or
interchange parts with another valve.
4. Install the poppet and spring. For shim adjustable
valves, install the plug and torque to 68 Nm (50
ft•lbf). For screw adjustable valves, install the plug
with its lock nut, aligning the marks made at
disassembly, and torque the lock nut to 52 Nm (38
ft•lbf).
5. Check and adjust the charge pressure.
Remove Shim Charge
Relief
Shim Adjustable Charge
Relief Valve
CONTENTS