Graco 3A0410D Torque Instructions, Fluid Cover Screws Air Valve Screws, Manifold fasteners

Operation

Torque Instructions

See FIG. 5 for fluid cover and air valve fasteners. See FIG. 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: 40-45ft-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: 45-55in-lb(5-6.2 N•m)

Aluminum Center Sections: 75-85in-lb(8.5-9.6 N•m)

Also check and tighten the nuts or bolts (X) holding the manifold feet to the mounting brackets.

	Fluid Cover Screws		Air Valve Screws
9	11		1	4
1		3
8		5
6		7
4			3	2
		2
12	10			ti16560a

X ti16558a

FIG. 5. Torque instructions, Fluid Covers and Air Valve Fasteners (all models, aluminum shown)

14 3A0410D