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8

SERVICE

Pump Repair Notes

1. Shut off the air to the pump, close the air control valve

and the bleed–type master air valve.

2. Disconnect the air and fluid hoses.

Reassembly Notes

1. The pump is marked with cast–in arrows (

Y

). Fig. 3

shows the location and direction the arrows must

face for proper reassembly.

2. The outlet manifold (on top of the pump) is marked

GRACO; the inlet manifold has no special markings.

Fig. 3

1” NPT

FLUID

OUTLET

1” NPT 

FLUID

INLET

1/4 NPT

AIR INLET

CAST–IN

ARROW

CAST–IN

ARROWS

Repairing the Air Director Valve Assembly

(See Fig. 4)
NOTE:

 The air director valve assembly (52) is  replace-

able as a unit. Perform steps 1–3, then reassem-

ble using the new valve assembly (steps 14–18).

To disassemble and repair the existing air direc-

tor valve assembly, perform steps 1–18.

1. Remove the screws (35) and washers (36). Gently

tap the air inlet plate (37) from the top and bottom

with a plastic mallet to help loosen the assembly .

Then pull the assembly out of the pump housing.

2. Remove the valve caps (30 and 33).

3. Use a 5 mm hex key wrench to remove the screws

(39) from the valve block (32). Then remove the air

inlet gasket (38) and plate (37).

4. Unscrew the actuator pin (27), then slide the pilot

valve spool (28) out of the block (32).

5. Use a 3 mm hex key wrench to remove the four

screws (22). Tap the slide valve plate (23) with a plas-

tic mallet to loosen it, then remove the plate, gasket

(24), slide valve (25), and spring (26) from the valve

block (32).

6. Slide the valve spool (31) out of the valve block (32).

Check the o–rings (29) carefully and replace, if nec-

essary.

7. Clean all parts thoroughly and inspect for wear or

damage. If the pilot valve bore (S) has nicks, burrs, or

excessive wear, replace the valve block (32). Clean

the threads of the actuator pin (27) and the threads

inside the pilot valve spool (28) to remove the old

thread sealant.

Fig. 4

35

36

REF 32

39

38

37

33

24

23

22

25

27

REF 27

28

30

29

31

29

32

GREASE

RECESS

GREASE OUTSIDE OF

CAPS (30, 33) AND

SPRING (26) BEFORE

REASSEMBLING

SLOT

TORQUE TO

3.4–4.5 N.m

(2.5–3.3 ft–lb)

TORQUE TO

6.8–7.9 N.m

(5–5.8 ft–lb)

TORQUE TO

8.5–9.5 N.m

(6.2–7 ft–lb)

S

APPLY LOCTITE

r

 NO. 222

TO THREADS

26

Summary of Contents for 218-940

Page 1: ...agram 21 Pump Performance Data 22 23 Technical Data Back Cover Warranty Back Cover The HUSKY 1030 DIAPHRAGM PUMP 8 bar 120 psi MAXIMUM WORKING PRESSURE ALUMINUM MODELS Model 218 940 Series D With Buna...

Page 2: ...ion inlet Powerful suction could cause serious bodily injury FIRE OR EXPLOSION HAZARD Static electricity is created by the flow of fluid through the pump and hose If every part of the equipment is not...

Page 3: ...oils water or ganic acids aldehydes amines Halogenated hydrocarbons hydrocar bons silicate esters ethers animal oils vegetable oils Polyester Elastomer 0 100_C 32 212_F Excellent resistance to alcoho...

Page 4: ...ed Transfer Hose K Fluid Outlet L Suction Hose M Fluid Inlet P Air Control Valve Y Ground Wire F C K J A D A G P E M Y B H L FLUID OUTLET FLUID INLET FLUID INLET GROUNDED AIR HOSE REQUIRED MUFFLER P N...

Page 5: ...nd the pump will not operate NOTE The inlet and outlet manifolds can be removed and turned 180 _ to change the direction the ports face Refer to Repairing the Check Valves on page 11 for the procedure...

Page 6: ...slowly until all air has been pushed out of the lines Then open the air control valve only as far as necessary to get the desired results WARNING NEVER exceed 8 bar 120 psi air supply pressure to the...

Page 7: ...ee page 8 Pump operates erratically Clogged or leaking suction line Inspect for leaks or clear Sticky air director valve 52 Check See page 8 Sticky check valve balls 19 Clean or repair See page 11 Dia...

Page 8: ...of the pump housing 2 Remove the valve caps 30 and 33 3 Use a 5 mm hex key wrench to remove the screws 39 from the valve block 32 Then remove the air inlet gasket 38 and plate 37 4 Unscrew the actuato...

Page 9: ...the plate and pump housing 2 Install a screw 35 and washer 36 to check the alignment adjust as necessary Loosely install a screw and washer in the opposite corner Then install the remaining screws an...

Page 10: ...let manifold 21 5 Remove the bolts 14 3 or 55 legs 12 or 13 washers 16 and nuts 15 from the diaphragm cov ers 11 on each side of the pump 6 Hold the fluid side support plate 8 on one end of the pump a...

Page 11: ...20 ft lb 16 Be sure the mating surfaces of the pump housing and the manifolds are clean 17 Working on the inlet side bottom first arrow on dia phragm cover will face down install an o ring 17 ball 19...

Page 12: ...8 5 9 5 N m 6 2 7 ft lb TORQUE TO 13 5 16 N m 9 8 12 ft lb TORQUE TO 6 8 7 9 N m 5 5 8 ft lb TORQUE TO 42 47 N m 30 35 ft lb TORQUE TO 13 5 16 N m 9 8 12 ft lb TORQUE TO 13 5 16 N m 9 8 12 ft lb TORQU...

Page 13: ...EW socket M4 x 20 4 23 108 257 PLATE slide valve 1 24 108 260 GASKET slide valve 1 25 108 261 VALVE slide 1 26 108 262 SPRING air valve 1 27 108 268 PIN actuator air valve 1 28 108 267 SPOOL valve pil...

Page 14: ...8 5 9 5 N m 6 2 7 ft lb TORQUE TO 13 5 16 N m 9 8 12 ft lb TORQUE TO 6 8 7 9 N m 5 5 8 ft lb TORQUE TO 42 47 N m 30 35 ft lb TORQUE TO 13 5 16 N m 9 8 12 ft lb TORQUE TO 13 5 16 N m 9 8 12 ft lb TORQ...

Page 15: ...sst 1 22 108 254 SCREW socket M4 x 20 4 23 108 257 PLATE slide valve 1 24 108 260 GASKET slide valve 1 25 108 261 VALVE slide 1 26 108 262 SPRING air valve 1 27 108 268 PIN actuator air valve 1 28 108...

Page 16: ...ft lb TORQUE TO 42 47 N m 30 35 ft lb TORQUE TO 13 5 16 N m 9 8 12 ft lb TORQUE TO 27 N m 20 ft lb TORQUE TO 27 N m 20 ft lb 13 16 51 CHAMFERED SIDE FACES BALL 53 44 7 55 3 55 23 22 24 25 26 32 29 29...

Page 17: ...CK VALVE REPAIR KIT Must be purchased separately 220 988 r PTFE Consists of Ref No Qty 17 8 19 4 REF PART DESCRIPTION QTY NO NO 26 108 262 SPRING air valve 1 27 108 268 PIN actuator air valve 1 28 108...

Page 18: ...lb TORQUE TO 42 47 N m 30 35 ft lb TORQUE TO 13 5 16 N m 9 8 12 ft lb TORQUE TO 27 N m 20 ft lb TORQUE TO 27 N m 20 ft lb 7 13 CHAMFERED SIDE FACES BALL 33 51 53 16 44 55 55 3 23 22 24 25 26 32 29 29...

Page 19: ...261 VALVE slide 1 CHECK VALVE REPAIR KIT Must be purchased separately 220 988 r PTFE Consists of Ref No Qty 17 8 19 4 REF PART DESCRIPTION QTY NO NO 26 108 262 SPRING air valve 1 27 108 268 PIN actuat...

Page 20: ...when closed 1 2 npt m x f inlet and outlet STAINLESS STEEL BALL CONVERSION KIT 220 987 The stainless steel balls in this kit are heavier than the standard balls supplied in the pump and will seat posi...

Page 21: ...ight Leg DELETED 50 110 033 Bolt DELETED 54 108 577 Washer Models OLD 108 245 Plate 220 434 NEW 8 110 280 Plate 220 435 OLD 108 585 Left Leg 220 436 NEW 12 185 409 Left Leg OLD 108 586 Right Leg NEW 1...

Page 22: ...psi at a specific fluid flow lpm gpm and operating air pressure bar psi 1 Locate desired flow along bottom of chart 2 Follow vertical line up to intersection with selected fluid outlet pres sure curve...

Page 23: ...lpm gpm and operating air pressure bar psi 1 Locate desired flow along bottom of chart 2 Follow vertical line up to intersection with selected fluid outlet pres sure curve black Follow left to scale a...

Page 24: ...n manufacture installation operation or maintenance of structures accessories equipment or materi als not supplied by Graco This warranty is conditioned upon the prepaid return of the equipment claime...

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