Ram Troubleshooting
3A5379B
23
Ram Troubleshooting
Check all possible problems before disassembling the ram, pump, or platen. Refer to the appropriate pump manual
for pump troubleshooting.
Problem
Cause
Solution
Ram will not raise or
lower.
Closed air valve or
clogged air line.
Open, clear.
Not enough air pres
-
sure.
Increase.
Worn or damaged
piston.
Replace. See
Supply Unit Repair
on page 36.
Hand valve closed
or clogged.
Open, clear.
Ram raises and low
-
ers too fast.
Air pressure is too
high.
Decrease.
Air leaks around cyl
-
inder rod.
Worn rod seal.
Replace. See
Supply Unit Repair
on page 36.
Fluid squeezes past
ram plate wipers.
Air pressure too
high.
Decrease.
Worn or damaged
wipers.
Replace. See
Remove and Reinstall Wipers
on page 18.
Pump will not prime
properly or pumps
air.
Closed air valve or
clogged air line.
Open, clear.
Not enough air pres
-
sure.
Increase.
Worn or damaged
piston.
Replace. See pump manual.
Hand valve closed
or clogged.
Open, clear. See
Platen Maintenance
on page 17.
Hand valve is dirty,
worn, or damaged.
Clean, service.
Air assist valve will
not hold drum down
or push plate up.
Closed air valve or
clogged air line.
Open, clear. See
Platen Maintenance
on page 17.
Not enough air pres
-
sure.
Increase.
Valve passage
clogged.
Clean. See
Platen Maintenance
on page 17.
