307132
19
Troubleshooting Chart
Pump operates but Part B output
pressure drops during upstroke.*
Dirty, worn or damaged part B pump
piston valve.
Clean, service – see instruction
manual 307944.
Worn or damaged part B pump piston
packings.
Replace.
Pump operates but part B output pres-
sure drops during downstroke.*
Dirty, worn or damaged part B pump
intake valve.
Clean, service – see instruction
manual 307944.
Fluid not filling cylinder on upstroke,
“diving” on top of change–over.
Increase pressure on feed
pump. Check inlet filter screen.
Check foot valve.
Pump operates but part B output pres-
sure drops during both strokes.*
Dirty, worn or damaged part B pump
intake valve.
Clean, service – see instruction
manual 307944.
Fluid supply low.**
Refill or change container.
Fluid leaks around fluid pump packing
nut.
Loose packing nut or worn throat
packings.
Tighten, replace.
Relief valve opens too soon or won’t
close.
Relief valve is damaged.
Service – see instruction manual
308547.
* Fluid ratio will be wrong.
** Purge all air out of the system before proportioning the fluids.
Summary of Contents for BULLDOG HYDRA-CAT 208958
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