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Repair

7. Slide the air piston (124) out of the top of the

air motor base (118). Remove o-ring (120) and

gasket (102) from inside the air motor base.

Remove o-ring (123) from groove on outside of

base. Inspect all parts, including the spring (122)

in the air motor base.
NOTE: Do not remove the spring (122) and

retainer (121) if you do not have to.
NOTE: If the white bushing (119) needs to

be replaced, use an arbor press to remove.

Alternate tapping on the edges with a hammer

and a nylon rod or metal punch also will work.

The spring (122) and retainer (121) must be

removed first.

Figure 6

Air Motor Reassembly

Cylinder threads are sharp. Always wear protective

gloves to prevent cuts.

1. If the bushing (119) was removed, use an arbor

press and seat it all the way into the air motor

base (118). Alternate tapping using a hammer

and nylon rod or metal punch also works.

2. Install the retainer (121) into the air motor base.

Tap on the retainer as needed to ensure it seats

all the way.

3. If the spring (122) was removed, put it into the air

motor base (118), with the wider end down. Use

a screwdriver to pop it into the groove.

4. Lubricate and install o-ring (120) and gasket

(102) on the inside of the motor base. Lubricate

and install o-ring (123) on the outside.

5. Use flats to clamp the base (118) into a vise.
6. Lubricate the shoulder and the bottom outside

portion of the piston (124). Then, lower it into the

air motor base (118).

3A2977K

13

Summary of Contents for 3A2977K

Page 1: ...s to transfer low to medium viscosity uids Use with non ammable liquids only For professional use only Important Safety Instructions Read all warnings and instructions in this manual Save these instru...

Page 2: ...Down 8 Maintenance 9 Flushing Procedure 9 Cleaning 9 Tighten Threaded Connections 9 Troubleshooting 10 Repair 11 Disconnect the Air Motor 11 Air Motor Disassembly 11 Air Motor Reassembly 13 Disassemb...

Page 3: ...um Length 42 in 107 cm Drum U Cup PTFE 24R046 Double Ball Standard Drum Length 34 in 86 cm Drum U Cup UHMWPE 24R047 24R047C31 Double Ball Standard Drum Length 34 in 86 cm Drum U Cup PTFE NOTE See page...

Page 4: ...er or light switches on or off when ammable fumes are present Ground all equipment in the work area See Grounding instructions Use only grounded hoses Hold gun rmly to side of grounded pail when trigg...

Page 5: ...om traf c areas sharp edges moving parts and hot surfaces Do not kink or over bend hoses or use hoses to pull equipment Keep children and animals away from work area Comply with all applicable safety...

Page 6: ...ounting Mount the pump to fully support the weight of the pump and accessories as well as the stress caused during operation Do not use air or uid lines to support the pump Setup To avoid contaminatin...

Page 7: ...g exhaust hose ref M G Bleed type master air valve required C 3 8 npt exhaust air outlet H Air line drain pipe and valve D 3 8 npt air inlet J Main air line K Pump ground wire required Graco PN 238909...

Page 8: ...y pump was assembled using sanitary lubricant on moving parts and was tested in water Flush the pump thoroughly with an appropriate cleaning solution or disassemble and sanitize the parts before using...

Page 9: ...ocedure page 8 2 Remove the pump from the uid container Place it in an empty drum Operate it to pump out as much uid as possible 3 Flush the system thoroughly with an appropriate cleaning solution See...

Page 10: ...seat or seals Pump dives and or does not pump on downstroke Fluid inlet is obstructed Clear obstructions away from inlet Raise pump off of drum bottom Pump cycles unevenly or erratically Air motor is...

Page 11: ...splacement pump straight up and out of the container Air Motor Disassembly 1 Use ats on the base 118 to clamp the air motor into a vise 2 Remove the motor cover 10 3 Remove cap 103 Use a large channel...

Page 12: ...low these steps to replace the entire air valve without disassembly a Purchase Kit 262035 to replace entire valve assembly b Clamp piston in a vice Hold the piston cap with a spanner wrench and unscre...

Page 13: ...threads are sharp Always wear protective gloves to prevent cuts 1 If the bushing 119 was removed use an arbor press and seat it all the way into the air motor base 118 Alternate tapping using a hammer...

Page 14: ...d 115 Use pipe sealant on the threads of the valve 105 and torque to 15 to 20 ft lb 20 3 to 27 1 N m Use a screwdriver as shown if needed Torque to 15 to 20 ft lb 20 to 27 N m 9 Grease the inside and...

Page 15: ...he way out 2 Use a screwdriver in the slot to remove the inlet valve assembly Remove the retaining pin 212 and ball 213 Push the seat 210 out the bottom of the inlet housing 209 Remove o rings 211 and...

Page 16: ...all o rings 218 on the seat assembly Install the ball 207 then the seat assembly in the outlet housing 2 Lubricate and install one o ring 208 in the groove on the outlet seat pin 206 Push the pin 206...

Page 17: ...ond side The ends of the pin should be ush to the outside of the cylinder Check that the o rings are seated in the grooves Reconnect The Pump 1 If using bung adapter Accessory Kit 24R650 install it in...

Page 18: ...Parts Parts Apply sanitary grease before assembling cover 18 3A2977K...

Page 19: ...d on Pump Model 24N344 24R192 Used on Pump Model 24R046 6 24R191 Used on Pump Model 24R047 1 7 112933 MUFFLER 1 Ref Part Description Qty 10 24R178 COVER motor includes o ring ref 123 1 14 16U653 TOOL...

Page 20: ...R180 Torque to 50 to 60 in lb 5 6 to 6 8 N m Apply sanitary lubricant Apply medium strength thread locker Torque to 15 to 20 ft lb 20 3 to 27 1 N m Torque to 20 to 30 in lb 2 3 to 3 4 N m Apply pipe s...

Page 21: ...FKM 1 118 16P900 BASE air motor 1 119 BUSHING air motor included with air piston assembly ref 124 1 Ref Part Description Qty 120 159846 O RING buna N 1 121 16P926 RETAINER o ring 1 122 15J551 SPRING c...

Page 22: ...Parts Displacement Pump Models 24R189 24R190 24R191 and 24R192 Apply sanitary lubricant 22 3A2977K...

Page 23: ...195 and 24R196 10 209 17A630 GUIDE ball inlet 316 stainless steel 1 210 16P132 SEAT inlet sold with ball ref 213 and o ring ref 211 in Kit 24R182 1 Ref Part Description Qty 211 O RING 125 FKM sold wit...

Page 24: ...ing 104 pin 109 and o ring 126 24R176 Air Motor Piston Kit Piston with cap and o ring 124 factory assembled bushing 119 and o ring 120 24R177 Air Inlet Outlet Fitting Kit Inlet outlet tting 125 and o...

Page 25: ...cm in cm A 61 9 157 2 54 9 139 4 B 53 7 136 4 46 7 118 6 C 44 5 113 0 37 5 95 2 D uid inlet OD 1 972 5 0 1 972 5 0 E air inlet 3 8 npt f 9 5 npt f 3 8 npt f 9 5 npt f F air exhaust 3 8 npt m 9 5 npt...

Page 26: ...28 12 0 33 14 0 39 50 0 3 3 100 0 7 7 150 1 0 10 200 1 4 13 250 1 7 17 300 2 1 21 0 0 5 1 9 1 0 3 8 1 5 5 7 2 0 7 6 2 5 9 5 0 20 40 60 80 100 A B C A B C Air Flow scfm m3 min Fluid Flow gpm lpm KEY A...

Page 27: ...otor 120 F 49 C Maximum size pumpable solids 1 8 in 3 2 mm Air Inlet 3 8 npt f 9 5 mm npt f Air Exhaust 3 8 npt m 9 5 mm npt m Fluid Inlet Size Cylinder OD 2 0 in 5 cm Inlet Seat ID 0 938 in 2 4 cm Fl...

Page 28: ...for lost pro ts lost sales injury to person or property or any other incidental or consequential loss shall be available Any action for breach of warranty must be brought within two 2 years of the da...

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