Reconnect The Displacement Pump - Graco Merkur series Instructions-Parts List Manual

Repair
Reconnect the Displacement
Pump
1. Tilt the air motor onto its back, then hand turn the
displacement pump into the adapter plate. Set the
pump upright again.
2. Hold the air motor piston rod up with one hand. With
your other hand, put the coupling nut (106) on the
displacement rod.
3. Put the coupling
collars (107) into
the coupling nut
(106) so large
flanges point
upward.
4. Place spring
(118) over cou-
pling nut (106).
Hold spring down
to connect the air
motor rod and coupling nut (106).
5. Gently let the air motor piston rod drop onto the dis-
placement rod. Hand tighten the coupling nut (106).
18
6. Screw the displacement pump into the adapter plate
(103) until the cylinder top is flush with the top of the
adapter plate.
107
106
F . 6. Align cylinder and adapter plate.
IG
ti12817a 7. Align fluid outlet as shown and tighten the jam nut.
8. Hold the flats of the motor rod with a wrench. Use
another wrench to tighten the coupling nut (106).
Torque to 75-80 ft-lb (102-108 N•m).
Cylinder, not
wet cup, should
be flush with
plate.
103
332245G