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7

306818

Maintenance

Shutdown and Care of the Pump

Always stop the pump at the bottom of its stroke to
prevent fluid from drying on the rod and damaging the
throat packings.

WARNING

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

Pressure Relief Procedure

 on page 6.

Check the tightness of the packing retainer screws (7)
weekly. The screws should be tight enough to stop
leakage, but no tighter. Always 

relieve the pressure

before adjusting the packing retainer screws. See Fig.
2.

Fig. 2

06827

4

7

21

Flushing

If you are pumping fluid which dries, hardens, or sets
up, flush the system with a compatible solvent as often
as necessary to prevent build up of dried fluid in the
pump or hoses.

WARNING

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

Pressure Relief Procedure

 on page 6.

To reduce the risk of static sparking or splashing in the
eyes or on the skin, 

relieve the pressure

 and remove

the spray tip before flushing. Start the pump. Hold a
metal part of the gun/valve firmly to the side of a
grounded metal pail and use the lowest possible fluid
pressure during flushing. When flushing is complete,

relieve the pressure

 again.

Lubrication

WARNING

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

Pressure Relief Procedure

 on page 6.

The accessory air line lubricator (G) provides automat-
ic air motor lubrication. For daily, manual lubrication,

relieve the pressure

, disconnect the regulator, place

about 15 drops of light machine oil in the pump air
inlet, reconnect the regulator and turn on the air supply
to blow oil into the motor.

Summary of Contents for 206418

Page 1: ...1 Ratio Bulldogr Pumps 500 psi 3 5 MPa 35 bar Maximum Working Pressure 55 Gallon 200 liter Size Part No 207321 Series G Rubber Packed Stubby Size Part No 206418 Series D Rubber Packed Part No 206796...

Page 2: ...parts and accessories D Check the equipment daily Repair or replace worn or damaged parts immediately D Do not exceed the maximum working pressure of the lowest rated system component D Use fluids tha...

Page 3: ...e is any static sparking while using the equipment stop spraying immediately Identify and correct the problem PRESSURIZED EQUIPMENT HAZARD Spray from the gun hose leaks or ruptured components can spla...

Page 4: ...Fig 1 Connect the other end of the wire to a true earth ground Order Part No 237569 Grounding Wire and Clamp D Air compressor according to manufacturer s rec ommendations D Object being sprayed accor...

Page 5: ...tion and splashing of fluid in the eyes or on the skin and injury from moving parts if you are adjusting or repairing the pump The bleed type master air valve relieves air trapped between this valve a...

Page 6: ...your system The pump was tested in oil and some oil was left in the pump If the oil will contaminate the fluid you are pumping flush it out Fill the packing nut wet cup 1 2 full with Graco Throat Seal...

Page 7: ...To reduce the risk of serious injury whenever you are instructed to relieve pressure always follow the Pressure Relief Procedure on page 6 To reduce the risk of static sparking or splashing in the ey...

Page 8: ...8 306818 Notes...

Page 9: ...Cause Solution Pump does not operate or no fluid Loose or broken pump parts Disassemble check repair flow Restricted line or inadequate air supply Clear increase Exhausted fluid supply Refill and pri...

Page 10: ...connect all air and fluid hoses Remove the pump from its mounting and place it upright in a vise by clamping the intake valve housing 20 2 Remove the tie rod locknuts 29 the cotter pin 28 and the coup...

Page 11: ...e valve housing 20 in the vise 4 Place the cylinder 19 on the intake valve housing 20 5 Lubricate the displacement rod assembly and slid it into the cylinder 19 6 Place the o ring 23 or 43 on the outl...

Page 12: ...2 or 42 15 6 1 3 4 2 5 1 3 4 2 5 5 48 38 35 or 46 50 36 or 47 30 3 23 or 43 19 18 20 23 or 43 16 51 8 Add thread lubricant Model 206418 only Torque to 57 63 ft lb 77 85 NSm Lips of v packings must fac...

Page 13: ...13 306818 Notes...

Page 14: ...ts 06829 1 45 48 37 28 38 35 or 46 36 or 47 30 49 32 50 4 7 10 14 25 6 25 13 21 23 3 29 28 9 5 12 11 17 22 15 19 18 16 8 51 20 23 Rubber Packed Pumps Models 207321 and 206418 1 Used on Model 207321 on...

Page 15: ...VALVE PLATE 1 1 2 38 mm sq 1 Ref No Part No Description Qty 18 166066 VALVE PLATE 2 1 2 64 mm sq 1 19 166067 CYLINDER 1 20 166068 HOUSING intake valve 1 21 166069 HOUSING outlet 1 22 115079 O RING ni...

Page 16: ...16 306818 Parts 06829 1 37 28 38 35 36 30 32 4 7 10 14 6 44 13 21 43 3 29 28 9 5 41 11 17 42 15 19 18 16 8 20 43 PTFE Packed Pump Model 206796...

Page 17: ...T piston 1 16 166064 VALVE SEAT piston 1 17 166065 VALVE PLATE 1 1 2 38 mm sq 1 18 166066 VALVE PLATE 2 1 2 64 mm sq 1 19 166067 CYLINDER 1 20 166068 HOUSING intake valve 1 Ref No Part No Description...

Page 18: ...d 60 cycles per minute Air inlet size 3 4 npt f Wetted parts Models 206418 207321 302 303 304 Stainless Steel Nitrile Rubber Hycar UHMWPE Model 206796 302 303 304 Stainless Steel PTFE Hycar UHMWPE Wei...

Page 19: ...mp 11 279 mm Diameter 3 1 2 89 mm 1 75 44 5 mm 3 4 npt Air Inlet 3 4 npt Outlet 53 50 1359 mm For Drum Size Pump 40 50 1029 mm For Stubby Pump 1 75 44 5 mm 12 5 318 mm 5 68 144 mm 32 25 819 mm For Dru...

Page 20: ...d to incidental or consequential damages for lost profits lost sales injury to person or property or any other incidental or consequential loss shall be available Any action for breach of warranty mus...

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