Graco 16P957 Supply Unit Repair, Ram Piston Rods, Repair Parts, 302b 302k 302m 302a 302c 302l

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Repair

Supply Unit Repair

To reduce the risk of serious injury whenever you are instructed to relieve pressure always follow the Pressure Relief Procedure on page 10. Do not use pressurized air to remove the guide sleeve or the

NOTE: Do not reinstall end cap assembly if the ram pis- ton (302f) needs to be removed from the piston rod. See the next page for ram piston repair instructions.

303

302d

302e

piston.

Ram Piston Rods

Always service both cylinders at the same time. When you service the piston rod always install new o-rings in the piston rod seal and ram piston.

Repair Parts:

Piston Repair Kit 257622. See Ram Frame on page 26 for parts included in kit.

Disassemble Piston Rod Seal and Bearing

302b

302k

302m

302a

302c

302l

ti10520a

1.Relieve pressure.

2.Access piston rod seal and bearing.

a.Ensure ram is in lowest position.

b.Remove nuts (333) and lockwashers (332) from piston rods (302a).

c.Remove entire pump package, including the mounting plate (331) off of the piston

rods (302a). Use a fork-truck to lift the assembly from the mounting plate.

d.Secure pump package so pump and platen will not fall.

3.Remove retaining ring (303).

4.Remove piston rod seal and bearing. Slide end cap (302b), pin (302c), o-ring (302d), and spring (302m) up off of the piston rod (302a). Remove retaining ring (302l) and bearing (302k) from end cap (302b) and remove o-ring (302e).

5.Inspect parts for wear or damage. Replace as nec- essary.

FIG. 18: 3 in. Piston Rod Seal

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3A2798D

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Contents Important Safety Instructions Gallon 20 liter, with cartGallon 20 liter, no cart II 2 G c T2Contents Related ManualsSkin Injection Hazard Equipment Misuse Hazard Key Component IdentificationSee on Integrated air controls include Air Line AccessoriesIntegrated Air Controls Platen Component Identification Model 16U676, 20 liter 5 gallonLocation InstallationGeneral Information Grounding Mechanical Setup Connect Mix Line and GunAttach Drum Stops IG Ram BasePressure Relief Procedure Flush Before Using EquipmentSupply System Operation Before OperatingStart and Adjust Ram Start and Adjust PumpChange Drums FlushShutdown and Care of the Pump Replace Throat SealsBefore Beginning Repair Maintenance Procedures Platen MaintenanceAdjust Spacers Use Platen with Tapered and Straight Sided PailsUse platen with straight sided pail Remove and Reinstall WiperReassemble 20 Liter Wiper Assembly Platen Assembly 411 418 412 420 419 409 414 415 406 407 402 403 405Troubleshooting RamInstall Wipers RepairDisconnect Pump from Platen Connect Platen to PumpDisconnect Displacement Pump Install Displacement PumpConnect Displacement Pump Remove Displacement PumpConnect air hose to air motor fitting 7. See Remove Air Motor Install Air MotorDisconnect air hose from air motor fitting 7. See Repair Parts Supply Unit RepairRam Piston Rods Disassemble Piston Rod Seal and BearingAssemble Piston Rod Seal and Bearing Disassemble Ram Piston22 5 PartsXtreme PFP, 16P957 and 16T311 Qty 1 4 4 1 2 1 1 1 1 1 1 Part DescriptionRAM, dual post, motor regulator Cart, 16P434 Part Description QtyPumpline 201 212 215 202 229 216 203 204 207 206 205320 305 321 318 326 307 308 312 324 304, 310 305 301 6 334 Ram Frame333 332 331 303 310 335 315 314 313 Ram Frame Parts Description Qty Part Description20L Platen, 16U676 411 418 412419 401 BASE, platen, 20L 402 276049 403 405Check Valve 16T481 1205 1206 1207 1204 1201Accessories Static Mixer Kit, 16T316 Static Mixer 16T316Dimensions Technical Data Maximum fluid working pressure3A2798D Graco Standard Warranty Graco Information