Graco 3A2888A Water Pump User Manual


 
Torque Instruct
ions
Torque Instructions
If fluid cover o
r manifold fasteners have been
loosened, it i
s important to torque them using the
following pro
cedure to improve sealing.
NOTE: Fluid cover and manifold fasteners have a
thread-locking adhesive patch applied to the threads.
If this patch is excessively worn, the fasteners may
loosen during operation. Replace screws with new
ones or apply medium-strength (blue) Loctite or
equivalent to the threads.
NOTE: Always completely torque fluid covers before
torquing manifolds.
1. Start all fl
uid cover screws a few turns. Then, turn
down each s
crew just until head contacts cover.
2. Turn each s
crew by 1/2 turn or less working in a
crisscro
ss pattern to specified torque.
3. Repeat fo
r manifolds.
Fluid cover and manifold fasteners: 190to220
in-lb (21 to 25 Nm)
4. Retorque the air valve fasteners in a crisscross
pattern to the specified torque.
Air valve fasteners: 45to55in-lb(5to6Nm)
5. Retorque the pilot valves to the specified torque.
Do not overtorque.
Pilot v
alves: 20to25in-lb(2to3Nm)
Fluid Cover Screws
Inlet and Outl
et Manifold Screws
Air Valve Screws and Pilot Valves
16 3A2888A