Operation
14 3A0410D
Torque Instructions
See FIG. 5 for fluid cover and air valve fasteners. See
F
IG. 6 for manifold fasteners.
NOTE: Fluid cover and manifold fasteners on the poly-
propylene pumps 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.
If fluid cover or manifold fasteners have been loosened,
it is important to torque them using the following proce-
dure to improve sealing.
NOTE: Always completely torque fluid covers, then
torque the manifold pieces together, then torque the
assembled manifolds to the fluid covers.
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.
Fluid cover fasteners:
Polypropylene and Stainless Steel: 40-45 ft-lb
(54-61 N•m)
Aluminum: 55-60 ft-lb (75-81 N•m)
Manifold fasteners:
Polypropylene: 40-45 ft-lb (54-61 N•m)
Aluminum:
Refs 1-8: 11-21 ft-lb (15-28 N•m)
Refs 9-16: 55-60 ft-lb (75-81 N•m)
Stainless Steel:
Refs 1-4: 110-120 in-lb (12-13 N•m)
Refs 5-12: 40-45 ft-lb (54-61 N•m)
Retorque the air valve fasteners in a crisscross pattern
to specified torque.
Air Valve fasteners
Plastic Center Sections: 45-55 in-lb (5-6.2 N•m)
Aluminum Center Sections: 75-85 in-lb
(8.5-9.6 N•m)
Also check and tighten the nuts or bolts (X) holding the
manifold feet to the mounting brackets.
FIG. 5. Torque instructions, Fluid Covers and Air Valve Fasteners (all models, aluminum shown)
Fluid Cover Screws
Air Valve Screws
ti16558a
ti16560a
1
2
3
4
5
6
7
8
X
9
11
12
10
14
32
