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Air Motor Repair

333397A

13

Air Motor Repair

Disconnect the Air Motor

1.

Perform the 

Pressure Relieve Procedure, 

page 5.

2.

Disconnect the air and fluid hoses.

3.

See F

IG

. 4. Use a socket to remove the top two 

mounting screws (MS).

4.

Lift up on the air motor to remove it. The tie rods (3) 
and the lower will remain attached.

5.

Hold the flats of the air motor piston rod with a 
wrench. Use another wrench to loosen the coupling 
nut (9).

6.

Use a socket to remove the tie rod nuts (4). See F

IG

11. page 17.

7.

Use a wrench on the flats of the tie rods (3) to 
remove them from the bottom cover of the air motor.

Reconnect the Air Motor

1.

Screw the tie rods (3) into the bottom cover of the 
air motor. Torque to 5-10 ft-lb (7-13.5 N•m).

2.

Slide the pump onto the tie rods (3).

3.

Attach the tie rod nuts (4) and torque to 15-20 ft-lb 
(20-27 N•m).

4.

Hold the flats of the air motor piston rod with a 
wrench. Use another wrench to tighten the coupling 
nut (9).

5.

Tighten the mounting screws.

6.

Connect the air and fluid hoses.

Repair Air Valve

Replace Complete Air Valve

1.

Stop the pump at the middle of its stroke. Perform 
the 

Pressure Relieve Procedure, 

page 5.

2.

Disconnect the air line to the motor.

3.

For motors with DataTrak: 

See F

IG

. 5. Remove 

screw (S) to disconnect the reed switch (RS) from 
the air valve (AV).

4.

See F

IG

. 13, page 20. Remove screws (211). 

Remove the air valve (214) and gasket (209).

5.

To repair the air valve, see 

Disassemble the Air 

Valve, 

step 1 (page 14). To install a replacement air 

valve, continue with step 6.

6.

Align the new air valve gasket (209) on the mani-
fold, then attach the air valve (214).

7.

For motors with DataTrak:

 Use a screw to attach 

the reed switch assembly to the new air valve. Be 
sure the sensor cables are connected properly (see 
pump or package manual).

8.

Reconnect the air line to the motor.

F

IG

. 4: Disconnect Air Motor

WLD

3

MS

9

F

IG

. 5: Reed Switch Assembly and Air Line Removal

ti23967a

RS

AV

S

Summary of Contents for 24V672

Page 1: ...ater or water with additives to inhibit corrosion or mold For professional use only Model 24V672 300 psi 2 06 MPa 20 6 bar Maximum Fluid Working Pressure 100 psi 0 68 MPa 6 8 bar Maximum Air Working Pressure Important Safety Instructions Read all warnings and instructions in this manual Save these instructions WL D ...

Page 2: ...nect the Air Motor 13 Reconnect the Air Motor 13 Repair Air Valve 13 Replace Pilot Valves 15 Repair Air Motor 15 Parts 17 Pump Parts 17 Pump Parts List 17 Lower Parts 18 Lower Parts List 19 Air Motor Parts 20 Air Motor Parts List 21 Air Valve Parts 22 Air Valve Parts List 22 Air Valve Parts List 23 Mounting Hole Diagram 24 Air Motor Kits and Accessories 25 Dimensions 26 Pump 26 Air Motor 26 Bracke...

Page 3: ...azards Make sure all equipment is rated and approved for the environment in which you are using it Use equipment only for its intended purpose Call your distributor for information Route hoses and cables away from traffic 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 applic...

Page 4: ...Component Identification WL D 0 1 6 Ref Description A Ground Screw B Enclosed Wet Cup C Wet Cup Fill Port D Fluid Outlet E Fluid Inlet F Lower Cylinder G Outlet Housing H Displacement Rod K Tie Rod L Coupling Nut M Tie Rod Nut N Air Motor S Sight Glass Ref Description ...

Page 5: ...elief Procedure whenever you see this symbol Always de pressurize the system prior to any repair 1 Turn pot pressure regulator PR off 2 Turn the compressor OFF and disconnect the air inlet hose from the system 3 Turn the 4 way selection SL to FILL position 4 Open the dump valve on the blast tank 5 Verify that the pot pressure gauge PG displays zero pressure See FIG 2 Wet Cup Before starting fill w...

Page 6: ...maintenance schedule by recording when and what kind of maintenance is needed and then determine a regular schedule for checking your system Tighten Threaded Connections Before each use check all hoses for wear or damage Replace as necessary Check that all threaded connec tions are tight and leak free Wet Cup Maintenance Fill the Wet Cup half full with Graco TSL Maintain level daily ...

Page 7: ...ings are worn Replace the piston packings No output Ball check valves are improperly installed Check and repair the ball check valves Pump operates erratically Fluid supply is empty Refill and reprime the pump Ball check valves are held open or worn Check and repair the ball check valves Piston packings are worn Replace the piston packings Pump will not operate Air supply lines are restricted Clea...

Page 8: ...ting from the muffler Damaged air valve plate 313 or cup 314 Replace or service the air valve plate 214 See FIG 14 page 22 Air motor bounces at the top of the stroke Damaged bottom pilot valve 213 Replace the bottom pilot valve 213 See FIG 13 page 20 Air motor bounces at the bottom of the stroke Damaged top pilot valve 213 Replace the top pilot valve 213 See FIG 13 page 20 Icing inside the motor A...

Page 9: ...ible 2 Slowly increase the pot pressure until the pump begins to move then quickly lower pressure to stop the pump in the middle of the stroke 3 Perform the Pressure Relieve Procedure page 5 4 Disconnect the air and fluid hoses Remove the pump from its mounting 5 See FIG 11 page 17 Unscrew the tie rod nuts 4 from the tie rods 3 Unscrew coupler and remove coupler collars Carefully pull the displace...

Page 10: ...ng Check parts carefully for damage or wear Replace parts as needed 1 Remove the displacement pump from the air motor as explained on page 9 2 See FIG 12 page 18 Unscrew the locking ring 117 from the cylinder 111 Remove the intake valve housing 113 3 Remove the o ring 112 ball stop pin 105 ball guide 122 and ball 102 from the intake valve housing 113 4 Loosen the enclosed wet cup 115 Push the dis ...

Page 11: ...neoprene v packing 119 one UHM WPE v packing 125 the male gland 124 the shim 129 and the washer 123 See Detail B page 12 4 Screw the piston stud 114 onto the piston mount ing stud 128 Torque to 50 70 ft lb 68 95 N m Install the piston ball 102 on the piston seat Slide the ball stop pin 110 into the desired set of holes and secure with the cotter pin 101 5 Place the flats of the displacement rod 10...

Page 12: ...e face down Apply lubricant See Detail B Lips of v packings must be face up Torque to 60 ft lb 4 1 N m Detail A Throat Packings Detail B Piston Packings 1 4 5 7 1 2 6 3 6 1 3 2 7 5 4 7 4 139 138 112 114 128 104 135 137 136 111 102 117 113 134 133 116 115 107 122 123 4 7 4 4 4 ti23797a ...

Page 13: ...r motor piston rod with a wrench Use another wrench to tighten the coupling nut 9 5 Tighten the mounting screws 6 Connect the air and fluid hoses Repair Air Valve Replace Complete Air Valve 1 Stop the pump at the middle of its stroke Perform the Pressure Relieve Procedure page 5 2 Disconnect the air line to the motor 3 For motors with DataTrak See FIG 5 Remove screw S to disconnect the reed switch...

Page 14: ...ssembly 310 and the detent cam 307 from the center Reassemble the Air Valve 1 Lubricate the detent cam 307 and install into the housing 2 See FIG 7 Lubricate the u cups 309 and install on the piston 306 with the lips facing toward the center of the piston 3 Lubricate both ends of the piston 306 and install it in the housing 4 Lubricate and install the detent assembly 310 into the piston 5 Standard...

Page 15: ...om the air valve See FIG 5 page 13 2 See FIG 13 page 20 Use a 10 mm socket wrench to remove four screws 211 Remove the air valve 214 and gasket 209 3 Remove the muffler 4 Remove four screws 211 and remove the manifold 220 and two gaskets 208 5 Use a 10 mm socket wrench to remove the pilot valves 213 from the top and bottom cover 6 Remove the 13 mm tie bolts B 7 Remove the top cover Remove the o ri...

Page 16: ...02 on the bottom cover 201 8 See FIG 10 Carefully place the bottom cover 201 on the cylinder 205 Slide the rod through the bearing The manifold surfaces of the top and bot tom covers must align Be sure the shield 206 is in the groove on both the top and bottom covers 9 Install the tie bolts 211 and tighten by hand 10 Install two gaskets 208 on the manifold 220 Install the manifold 214 Torque bolts...

Page 17: ...10 ft lb 7 13 5 N m 1 Torque to 15 20 ft lb 20 27 N m 2 Torque to 23 26 ft lb 31 35 N m 3 1 2 3 3 1 3 10 9 2 4 Ref Part Description Qty 1 M02LN0 MOTOR air 2 5 in 1 2 24V671 LOWER displacement sst 1 3 17B185 ROD tie Pack of 3 3 4 104541 NUT locl 3 8 102228 COVER oil hole 1 9 15M758 NUT coupler lower 1 10 184132 COLLAR coupling 2 ...

Page 18: ...Parts 18 333397A Lower Parts FIG 12 Lower Parts WL D ...

Page 19: ...ACKING o ring 1 75 id x 1 93 od 1 113 186992 HOUSING valve intake 1 114 186993 STUD piston 10 1 pr 5 1 mo 1 115 NUT packing sealed 1 116 17B184 HOUSING outlet 1 117 164630 RING locking 1 118 111178 PACKING o ring 1 119 170625 PACKING vee 1 122 164679 GUIDE ball 1 123 176634 WASHER stud piston 1 124 186990 GLAND packing 316 sst 1 125 176638 PACKING vee 3 127 186989 GLAND packing 316 sst 1 128 17664...

Page 20: ...Parts 20 333397A Air Motor Parts FIG 13 Air Motor Parts WL D 2 Apply lubricant 11 13 ft lb 15 18 N m 1 2 1 2 2 ...

Page 21: ...207 SEAL u cup 562 2 208 GASKET cover small 2 209 SEAL air valve manifold 1 210 15M291 COVER motor 2 5 1 211 SCREW M6 x 25 thread forming 8 212 15M314 SCREW cap 2 213 24A366 VALVE pilot 2 214 VALVE air small 1 215 15M213 MUFFLER 3 8 1 217 RING retaining 1 218 ROD piston 2 5 1 219 PISTON motor 2 5 1 220 24A579 KIT manifold medium short 1 225 116343 SCREW ground 1 229 15W719 LABEL safety warning 1 R...

Page 22: ...2 SCREW M3 thread forming 2 303 RING snap 1 0 2 304 SPRING detent small 1 305 PIN detent small 1 306 PISTON air valve small 1 307 CAM detent 1 308 PLUG air valve small 2 309 SEAL u cup bevel lip 2 310 ROLLER detent small 1 311 HOUSING air valve small npt 1 312 PISTON detent small machined 1 313 PLATE air valve machines 1 314 CUP air valve machined 1 Ref Part Description Qty ...

Page 23: ... Qty Air Valve Repair Kit Air Valve Seal Kit Air Valve End Cap Kit Other 311 16G067 HOUSING 1 306 15K903 AIR VALVE PISTON 1 312 16G068 DETENT PISTON ASSEMBLY 1 307 278330 DETENT CAM 1 313 16G069 PLATE air valve 1 301 124796 O RING 2 308 15K905 CAP standard 2 309 278333 U CUP 2 302 15R551 SCREW 2 Screws Kit 24A359 pack of 10 303 124798 SNAP RING 2 304 15K910 DETENT SPRING 1 314 16G070 CUP 1 211 15R...

Page 24: ...ng Hole Diagram 24 333397A Mounting Hole Diagram 3 in 76 mm M02xxx 2 5 in Three 3 8 24 tie rod holes 3 1 4 in 83 mm bolt circle Two M8 mounting ti12734a 2 2 in Two M8 X 1 25 holes 56 mm ti12733a 2 5 in 64 mm ...

Page 25: ...51 Air Motor Seal Kit 24A539 Air Valve Repair Kit 24A537 Air Valve Seal Kit 24A535 Air Valve End Cap Kit Standard 24A360 Lower Repair Kit 17B186 Screws Kit Includes ten screws 109 24A359 Lower Cover Kit 24G695 Motor Piston Assembly Kit 24A542 Motor Cover Kit 24A541 Merkur Lower Cover Kit 24R704 Sealed Wet Cup Kit 17B181 Fill Port Repair Kit 17B182 ...

Page 26: ...Dimensions 26 333397A Dimensions Pump Air Motor WL D 26 5 in 67 cm 5 5 in 14 cm 4 2 in 11 cm 6 2 in 16 cm WL D 9 2 in 234 mm 6 2 in 157 mm 4 2 in 107 mm 5 1 in 130 mm 6 8 in 173 mm ...

Page 27: ...Dimensions 333397A 27 Bracket Mount WL D 4 25 in 5 5 in 2 5 in 2 13 in 2 75 in ...

Page 28: ...um fluid temperature 120 F 49 C Wetted parts Stainless steel carbide UHMWPE Nitrile Neoprene Polyurethane PTFE Air Motor Stroke length 2 5 in 63 5 mm Air inlet size 1 4 in Maximum motor speed Do not exceed maximum recommended speed of fluid pump to prevent premature pump wear 60 cycles per minute Noise dBa Sound power 82 8 dBa Sound pressure 72 9 dBa Notes Sound power at 70 psi 0 48 MPa 4 8 bar 20...

Page 29: ...Notes 333397A 29 Notes ...

Page 30: ...n prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE...

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