Graco 406809C User Manual

GENUINE GRACO PARTS AND ACCESSORIES

Two-Piece Bolt-Through Diaphragm Kits 24B627 and 24F926

For use on Husky® 1050 Diaphragm Pumps. Kit 24B627 - PTFE/EPDM

Kit 24F926 - PTFE/Santoprene

Important Safety Instructions

Read all warnings and instructions in the

Husky Repair/Parts manual. Save all instructions.

1050 Air-Operated Diaphragm Pump

™

Ref. Description Qty.

101

DIAPHRAGM, PTFE 2

102

DIAPHRAGM, backup, EPDM (Kit 24B627) 2 DIAPHRAGM, backup, Santoprene (Kit 24F926)

103 O-RING, shaft bolt, for 1050A (aluminum),

1050H (hastelloy), and 1050S (stainless

steel) models 104 TOOL, diaphragm install 1 105 O-RING, manifold, PTFE (not shown) 8

All brand names or marks are used for identification purposes and are trademarks of their respective owners.

406809C

ENG

102

101

(Plastic Pumps)

104

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441

(Metal Pumps)

ti14021a

103

Rounded side faces diaphragm.

Apply lithium-based grease.

Torque to 20-25 ft-lb (27-34 N•m) at 100 rpm maximum.

AIR SIDE markings on diaphragm must face center housing.

See reverse for assembly instructions.

Assembly

1. Follow the steps for your type of pump to assemble the diaphragms and attach one of the fluid covers.

Metal Pumps (1050A, 1050H, 1050S)

a. Install the o-ring (103) on the shaft bolt.

b. Assemble the fluid side plate, the backup dia-

phragm (102), the diaphragm (101), and the air side diaphragm plate on the bolt exactly as shown on page 1.

c. Apply medium-strength (blue) Loctite or equiva-

lent to the bolt threads. Screw the bolt into the shaft hand tight.

d. Apply lithium-based grease to the shaft u-cups

(in center housing) and the length and ends of the diaphragm shaft. Slide the shaft into the housing.

e. Hold one of the plates with a wrench, and

torque the other plate to 20-25 ft-lb (27-34 N•m) at 100 rpm maximum. Do not over-torque.

f. Reattach the first fluid cover. See Torq ue

Instructions in the manual.

2. To ensure proper seating and extend diaphragm life, attach the second fluid cover with air pressure on the pump.

a. Place the supplied tool (104) where the air valve

gasket normally goes. Arrows (A) must face toward the fluid cover that is already attached.

104

e. Repeat Steps a-c for the other diaphragm

assembly.

f. Hold one shaft bolt with a wrench and torque

the other bolt to 20-25 ft-lb (27-34 N•m) at 100 rpm maximum. Do not over-torque.

g. Reattach the first fluid cover (3). See To rque

Instructions, in the manual. Go to Step 2.

Plastic Pumps (1050C, 1050F, 1050P)

a. Assemble the diaphragm (101), the backup dia-

phragm (102), and the air side diaphragm plate on the fluid side plate.

b. Apply medium-strength (blue) Loctite or equiva-

lent to the threads of the screw on the fluid side plate. Screw the assembly into the shaft hand-tight.

c. Apply lithium-based grease to the shaft u-cups

(in center housing) and the length and ends of the diaphragm shaft. Slide the shaft into the housing.

d. Repeat Steps a-b for the other diaphragm

assembly.

ti14120a

b. Reattach the air valve.

c. Supply a minimum of 20 psi (0.14 MPa, 1.4 bar)

air pressure to the air valve. Shop air may be used. The diaphragm will shift so the second fluid cover will seat properly. Keep air pressure on until the second fluid cover is attached.

d. Attach the second fluid cover. Follow Torque

Instructions in the manual.

e. Remove the air valve and the tool (104).

NOTE: If you are replacing the diaphragms but not the air valve, you must remove the air valve and gasket, put the tool in place of the gasket, and put the air valve back on to get the air pressure needed for proper installation of the second fluid cover. Remember to remove the tool and replace the gasket when finished.

3. Reassemble the ball check valves and manifolds as explained in the manual.

2 406809C