Graco 406826A User Manual
GENUINE GRACO PARTS AND ACCESSORIES
Torque Instructions
Husky®1050 Diaphragm Pumps
Important Safety Instructions
Read all warnings and instructions in the
Husky®1050 Air-Operated Diaphragm Pump
Repair/Parts manual. Save all instructions.
NOTE: Fluid cover and manifold fasteners have a
thread-locking adhesive patch applied to the threads. If
this patch is excessively worn, the screws may loosen
during operation. Replace screws with new ones, or
apply medium-strength (blue) Loctite or equivalent to the
threads.
If fluid cover or manifold fasteners have been loosened,
it is important to torque them using the following procedure to improve sealing.
NOTE: Always completely torque fluid covers before
torquing manifolds.
Start all fluid cover screws a few turns. Then turn down
each screw just until head contacts cover. Then turn
each screw by 1/2 turn or less working in a crisscross
pattern to specified torque. Repeat for manifolds.
406826A
1
4
3
2
ti13845a
5
2
3
4
1
67
8
Fluid cover and manifold fasteners:
100 in-lb (11.3 N•m)
Retorque the air valve fasteners (V) in a crisscross pattern to specified torque.
Air valve fasteners:
55 in-lb (6.2 N•m) for plastic center sections
80 in-lb (9.0 N•m) for metal center sections
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
406826 Rev, A 08/2009
Copyright 2009, Graco Inc. is registered to ISO 9001
6
8
FIG. 1. Torque sequence
V
5
ti13846a
7
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