Graco Dyna-Star 77X000 Instructions Manual page 20

Repair
7. For Tube-In-Tube models only: Remove bolts (4)
holding tube (3) to pump adapter (2). Remove tube
and gasket (5) and set these parts aside to use for
reassembly (F . 19).
IG
5
3
4
F . 19
IG
8. Observe location of priming rod (215) and shovel
piston (216) inside the shovel cylinder (208) (See
Pump Parts, page 38). If the piston is not located in
the lowest position inside the cylinder:
c. Remove screws (125) and washers (124) hold-
ing motor (123) to gear box housing (101) (F
20).
d. Remove motor.
101
122
F . 20
IG
20
2
125
e. Use a screw driver to turn motor shaft clockwise
until shovel piston (216) is seated in the lowest
position inside the shovel cylinder (208).
Pump has a one way clutch. Do not use a power
screwdriver to turn shaft or not turn shaft
counter-clockwise. These actions could damage
pump/motor.
F . 21
IG
.
IG f. Verify o-ring (122) is still in place and correctly
seated in motor (123) (F
g. Reinstall motor (123) to gear housing box (101)
using screws (125) and washers (124). Use a
wrench to tighten screws securely. Torque to 12
- 14 ft lbs (16 - 19 N.m) (F
123
124
9. Remove screws (6) from pump adapter (2) (F
6
F . 22
IG
NOTICE
. 20).
IG
. 20).
IG
2
. 22).
IG
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