Graco 249161, Руководство по ремонту и запасным частям

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Troubleshooting
LOW OR FLUCTUATING OUTPUT
TYPE OF PROBLEM WHAT TO CHECK
If check is OK, go to next check
WHAT TO DO
When check is not OK refer to this column
Motor runs and pump strokes 1. Paint supply. 1. Refill and reprime pump.
2. Intake strainer clogged. 2. Remove and clean, then reinstall.
3. Suction tube or fittings loose. 3. Tighten; use thread sealant or sealing
tape on threads if necessary.
4. To see if intake valve ball and piston ball are
seating properly, page 29.
4. Remove intake valve and clean. Check
balls and seats for nicks; replace if neces-
sary, page 29. Strain paint before using to
remove particles that could clog pump.
5. Leaking around throat packing nut which
may indicate worn or damaged packings,
page 29.
5. Replace packings, page 29. Also check
piston valve seat for hardened paint or
nicks and replace if necessary. Tighten
packing nut/wet-cup.
6. Pump rod damage. 6. Repair pump, page 29.
7. Capacitor failure. Visually inspect capacitor
near terminals. Ensure that orange safety
relief plug is intact.
7. Replace capacitor.
Motor runs but pump does not
stroke
1. Displacement pump pin (112) (damaged or
missing), page 29.
1. Replace pump pin if missing. Be sure re-
tainer spring (27) is fully in groove all
around connecting rod, page 29.
2. Connecting rod assembly (76) for damage,
page 27.
2. Replace connecting rod assembly,
page 27.
3. Gears or drive housing, page 27. 3. Inspect drive housing assembly and
gears for damage and replace if neces-
sary,
page 27.