Graco 24R253, Instructions Manual

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Maintenance
Maintenance
Regularly check and maintain fluid level in packing
nut/wet cup (D) to 1/2 full with Throat Seal Liquid
(TSL).
Regularly inspect soft parts and replace when worn
or damaged.
Troubleshooting
1. Relieve fluid pressure. See system manual for
pressure relief procedure.
2. Check all possible causes and problems before
disassembling pump.
PROBLEM — CAUSE — SOLUTION
Example:
• Problem.
– Cause.
♦ Solution.
• Output lowon down-stroke.
– Open or worn intake valve.
♦ Clear or service intake valve.
• Output lowon up-stroke.
– Open or worn piston valve or packings.
♦ Clear piston valve; replace packings.
• Erratic accelerated speed.
– Fluid supply exhausted, clogged suction.
♦ Refill fluid supply container and prime pump.
– Open or worn piston valve or packings.
♦ Clear piston valve; replace packings.
– Open or worn intake valve.
♦ Clear or service intake valve.
• Cycles or fails to hold pressure at stall.
– Worn check balls, seats, or piston packing.
♦ Service lower. See Repair, page 6 .
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