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10

307962

Air Motor Service

WARNING

To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the

Pressure Relief Procedure

 on page 6.

WARNING

Never operate the pump with the air motor plates
removed. The air motor piston, located behind the
air motor plates, moves when air is supplied to the
motor. Moving parts can pinch or amputate your
fingers or other body parts.

WARNING

To reduce the risk of static arcing which could
result in a fire or explosion and serious injury, use
only non-sparking tools if the pump is being as-
sembled or worked on in a hazardous atmosphere.

NOTE:

Reference letters in parentheses in the text re-
fer to the figure illustrations.

Restarting a Stalled Air Motor

1.

Relieve the pressure

. This usually reseats the air

transfer valves. Reconnect the air and turn it on.

2.

If the air transfer valves do not reseat, screw the cap
nut (131) out of the cylinder (115), pull up on the trip
rod (101) and screw the cap nut back into the cylin-
der. See Fig 3.

Replacing the Throat Bearing

1.

Relieve pressure.

2.

Disconnect the displacement pump from the motor.

3.

Remove the warning plate (128) from the motor
base. See Fig 3.

4.

Use a 1/4 in. punch to unscrew the bearing (125).
See Fig 3.

5.

Reassemble in the reverse order of disassembly. Be
sure the air motor plates are installed before operat-
ing the motor.

Repairing the Air Motor 

CAUTION

To reduce the risk of damaging parts:

Use special pliers, Part No. 207579, when handling
the trip rod. Damage to the surface of the trip rod
can result in erratic air motor operation.

Always lift the cylinder straight up off the piston.
Never tilt the cylinder as it is being removed.

WARNING

Always keep fingers clear of the toggle assemblies
(B) to avoid pinching or amputating them. See Fig.
3.

1.

Relieve the pressure

.

2.

Remove the displacement pump. See page 12.

3.

From below the motor base (102), push up the piston
rod. Unscrew the cap nut (131) just until you can pull
up the cap nut and then grasp the trip rod (101) with
the special padded pliers. Remove the cap nut. See
Fig 3.

4.

Remove the screws (105). Carefully pull the cylinder
straight up off of the piston. See Fig 3.

Fig 3

102

105

115

101

131

128

125

GRASP WITH 
PADDED PLIERS

Содержание President B Series

Страница 1: ...22167 Series B 307962J WARNING This pump is specially designed with non sparking construction Interchange of any part for repair or improvement of the pump including the air motor must be with identic...

Страница 2: ...the equipment only for its intended purpose If you are uncertain about usage call your Graco distributor D Do not alter or modify this equipment Use only genuine Graco parts and accessories D Check e...

Страница 3: ...trigger safety operates before spraying dispensing D Lock the gun valve trigger safety when you stop spraying dispensing D Follow the Pressure Relief Procedure on page 6 whenever you are instructed to...

Страница 4: ...hile operating or if fumes are present D Do not operate a gasoline engine in the spray dispense area D This pump is specifically designed with non sparking construction Interchange of any parts for re...

Страница 5: ...ways check your local code Order Part No 237569 2 Air hoses use only electrically conductive air hoses 3 Fluid hoses use only electrically conductive fluid hoses 4 Air compressor follow the manufactur...

Страница 6: ...all or clean the spray tips 1 Shut off the air to the pump Disconnect the air hose to be sure pressure is relieved in the air motor 2 If the pump or hose is not clogged and the hose is not closed off...

Страница 7: ...d run the pump slowly for a couple of minutes to distribute the oil 3 Connect a suitable hose to the 3 4 npt fluid outlet Connect a dispensing valve to the hose 4 Connect a ground wire to the pump gro...

Страница 8: ...chemical If the Pump or Hose Clogs WARNING If the pump or the hose clogs use extreme caution to avoid splashing material in your eyes while clearing the clog Follow the procedure below 1 Shut off the...

Страница 9: ...iston and or throat packings Replace the packings Pump is clogged Material has dried in the pump Flush pump more frequently replace packings as needed Material is too dry Add water Pump and hose not f...

Страница 10: ...ee Fig 3 Replacing the Throat Bearing 1 Relieve pressure 2 Disconnect the displacement pump from the motor 3 Remove the warning plate 128 from the motor base See Fig 3 4 Use a 1 4 in punch to unscrew...

Страница 11: ...od and cylinder walls for scratches or wear Replace parts as necessary Lubricate all parts with a light waterproof grease 15 Install the o ring 124 in the groove inside the base 102 Install the o ring...

Страница 12: ...20 5 Tap the displacement rod 3 assembly out the bot tom of the pump 6 Clamp the piston housing 13 in a padded vise Use a wrench on the flats to unscrew the piston seat 22 Remove the lower u cup packi...

Страница 13: ...935 CYLINDER lower cst 1 12 183931 ROD piston cst 1 13 157184 HOUSING piston cst 1 14 100279 BALL piston cst 1 15 188738 PACKING u cup lower urethane 1 16 183933 COLLAR 1 17 183925 PIN ball stop cst 1...

Страница 14: ...158359 ACTUATOR valve 1 120 170709 POPPET valve urethane 2 121 158378 PACKING o ring nitrile rubber 1 122 160623 ARM toggle 2 123 158377 SEAL flat ring nitrile rubber 1 124 158379 PACKING o ring nitr...

Страница 15: ...ent see parts on page 13 1 WARNING This pump is specially designed with non sparking construction Interchange of any part for repair or improvement of the pump including the air motor must be with ide...

Страница 16: ...46 5 1145 mm President 30 5 775 mm 18 460 mm 3 4 npt FLUID OUTLET 1 2 npt f President 11 240 mm President 01605 Mounting Hole Layout FOUR 1 4 20 UNC 2B 1 503 38 18 mm 1 503 38 18 mm 3 76 2 mm diameter...

Страница 17: ...lb 25 3Kg Motor Maximum inbound air pressure 100 psi 0 7 MPa 7 bar Effective piston area 14 sq in 90 cm2 Effective piston diameter 4 25 108 mm Stroke 4 102 mm Air Valves Urethane Valve mechanism Bala...

Страница 18: ...set forth above The buyer agrees that no other remedy including but not limited to incidental or consequential damages for lost profits lost sales injury to person or property or any other incidental...

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