307-615
14
DISPLACEMENT PUMP SERVICE
Disconnect the Displacement Pump
1. Flush the pump if possible. Stop the pump on the
down stroke.
2. Follow the
Pressure Relief Procedure Warning
on
page 11.
3. Remove the suction tube and fluid hose from the
displacement pump.
4. Unscrew the three tie rod locknuts (48). See Fig 14.
5. Unscrew the shouldered nut (35). Pull the displace-
ment pump (46) off the tie rods (47).
6. Screw the jam nut (90) up onto the connecting rod
(91).
7. Remove the lower cotter pin (89) and unscrew the
connecting rod (91) from the displacement rod (A).
8. Refer to separate manual 307–862 for displacement
pump repair instructions. Repair kit 206–735 is avail-
able.
Reconnecting the Displacement Pump
1. Screw the connecting rod (91) into the displacement
rod (A) and replace the lower cotter pin (89). Screw
the jam nut (90) all the way down. See Fig 14.
2. Mount the displacement pump (46) onto the tie rods
(47).
3. Screw the shouldered nut (35) onto the hydraulic
motor (29). Screw the tie rod locknuts (48) onto the
tie rods (47) and torque to 35–50 ft-lb (47–68 N.m).
4. Reattach the hoses to the displacement pump.
5. If the grounding wire was disconnected before
service, be sure to reconnect it before operating the
sprayer.
6. Start the pump and operate it slowly to check the tie
rods for binding. Adjust the tie rod locknuts, if neces-
sary to eliminate binding.
Fig 14
47
48
35
91
90
89
46
TORQUE TO
35–50 ft-lb
(47–68 N.m)
