Graco Python A25115 Instructions - Parts Manual page 27

Reconnect Fluid Cylinder
1. Carefully guide the fluid plunger (5) into the packing
nut (16) and through the packing (15) as the threads
on the fluid cylinder (13) are brought closer to the air
motor housing (1).
F . 10 Reconnect fluid cylinder
IG
2. Tighten fluid cylinder (13) to 30 ft-lbs (40 N•m).
3A4386E
1
5
1
16
13
2
3. Tighten the packing nut (16) to a torque of 15 in-lbs
(1.7 N•m), then loosen and tighten again it to a final
torque of 5 in-lbs (0.6 N•m).
F . 11 Tighten packing nut
IG
NOTE: If a torque wrench is not present in the field, an
alternative method is to tighten the packing nut (16) fin-
ger tight through the window, then use a small punch or
hex wrench to further tighten by approximately 10
degrees.
NOTE: If the packing nut (16) is over-tightened, the
pump may not complete a full stroke and seal life will be
compromised.
Repair
16
27