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Repair
14
Repair
Prepare the Pump for Repair
1. Flush the pump if possible, page 11.
2. Relieve the pressure, page 10.
3. Disconnect the air and fluid hoses.
4. Remove the pump from its mounting and take it to
the work bench.
General Repair Notes
Fault Indications
During operation, check for indications of worn or dam-
aged parts, such as:
• major pressure fluctuations
• change in the pump’s operating sound
• irregular operation.
Always replace worn or damaged parts immediately to
prevent additional damage.
Tools Required
• 4, 5, 6, 8 and 10 mm allen wrenches
• 13 mm open end wrench
• 28 mm open end wrench, or adjustable wrench
• two flat blade screwdrivers
• #2 Phillips screwdriver
• internal snap ring pliers
• dowel rod (wood or plastic)
• o-ring pick
• diaphragm installation tool (part number 261695)
• A qualified technician should make all repairs.
• Inspect and clean all parts thoroughly before
reassembly.
• Use only genuine Graco replacement parts,
available from your Graco distributor.
• Be careful not to damage sealing surfaces.
• Replace all o-rings removed from the pump.
• Follow all lubrication, torque, and repair notes
in the repair procedures.
• Do not use silicone or silicone-based grease.