Reconnecting The Displacement Pump - Graco 253377 Instructions-Parts List Manual

RECONNECTING DISPLACEMENT PUMP
WARNING
To reduce the risk of pinching or injuring hands or
fingers caught between the hydraulic motor drip pan
and the coupling nut, always use connecting rod
adapter 184595 and tie rods 184596 on Model 222897
Viscount Pump. Never use connecting rod adapter
184451 and tie rods 184452 on Model 222897; those
parts do not allow sufficient clearance between the drip
pan and coupling nut.
TM
NOTE: On XL10000 models, ensure that the rod
adapter (102) has not loosened during maintenance.
Proper torque is necessary to prevent the rod adapter
from loosening during the pump operation.
If the rod adapter (102) has loosened during
maintenance, remove the adapter and apply Loctite®
TM
2760 (or equivalent) to the rod adapter and air motor
piston threads, and then torque as specified in Fig. 7.
18 308148
Service
1. Use at least two people to hold the displacement
pump while another reconnects it to the motor (see
the CAUTION at left). Orient the pump's fluid outlet
to the air or hydraulic inlet as was noted in step 3
under Disconnecting the Displacement Pump.
Position the displacement pump (105) on the tie
rods (107). See Fig. 7.
2. Screw the nuts (106) onto the tie rods (107) and
torque as noted in Fig. 7.
3. Place the coupling nut (103) on the displacement
rod (1), then place the coupling collars (108) into the
nut. Screw the coupling nut onto the connecting rod
adapter (102) loosely. Hold the connecting rod
adapter flats with a wrench to keep it from turning.
Use an adjustable wrench to tighten the coupling
nut. Torque as noted in Fig. 7.
4. Torque the packing nut (3) to 135–169 N.m
(100–125 ft–lb).
5. Reconnect all hoses. Reconnect the ground wire if it
was disconnected. Fill the wet-cup (3) 1/3 full of
Graco Throat Seal Liquid or compatible solvent.
6. Turn on the air or hydraulic power supply. On
hydraulic pumps, open the hydraulic return line
valve first, then the supply line valve. Run the pump
slowly to ensure that it is operating properly.