Graco PGM Instructions - Parts Manual page 37

5. Loosen clamping bolts on each side of coupling and
remove coupling.
NOTE: Pump shaft key may fall out during coupling
removal. Secure pump shaft key until coupling is
replaced.
Install Coupling
F . 20
IG
1. Slide coupling onto gear head output shaft. Tighten
coupling bolt just enough to hold it's position.
2. Align pump shaft key and slide coupling onto pump
shaft. Tighten coupling bolt just enough to hold it's
position.
3. Attach servo motor, gear head, and top plate to
pump assembly. See F
4. Slide drive coupling so it is evenly spaced between
pump and gearhead. Both sides of coupling should
slide easily on each shaft. If coupling does not slide
freely, loosen pump bolts (103, 1303) and align
pump until coupling moves freely. Tighten pump to
pump block to 430-480 in-lb (48.58-54.23 N•m).
3A5185B
. 20.
IG
5. Separate coupling until proper gap is created. F
21. See the following table.
Pump Size
cc / revolution
6
20
Gap
F . 21
IG
6. Tighten coupling bolts to the following torques:
Pump Size
cc / revolution
6
20
7. Install gussets with shoulder bolts (5, 1104).
Repair
.
IG
Gap (mm)
18
20
Torque,
in-lb (N•m)
132 (15)
309 (35)
37