29
310–534
Ram and Hydraulic Power Supply
Troubleshooting
For more information about the ram or hydraulic power supply, see Form# 310–533.
Problem
Cause(s)
Solution(s)
Ram won’t raise or lower or
ram moves too slowly
Closed main air valve or clogged air line. Open air valve, clear air line.
ram moves too slowly
Not enough pressure.
Increase ram pressure.
Worn or damaged piston.
Replace piston. See Form# 310–533.
Hand valve closed or clogged.
Open, clear hand valve or exhaust.
Hydraulic valve is not working.
Replace hydraulic valve. See
Form# 310–533.
Hydraulic fluid regulator not working.
Replace hydraulic fluid regulator. See
Form# 310–533.
Hydraulic filter clogged.
Clean or replace hydraulic filter. See
Form# 310–533.
Low hydraulic fluid level.
Check for leaks. Refill reservoir. See
page Form# 310–533.
Ram raises or lowers too fast
Ram pressure too high.
Decrease ram pressure.
Hydraulic fluid leaks around
cylinder rod
Worn rod seal.
Replace o-rings in guide sleeve. See
Form# 310–533.
Fluid squeezes past follower
plate wipers
Ram pressure too high.
Decrease ram pressure.
q
p
plate wipers
Worn or damaged wipers.
Replace wipers. See procedure in the
Supply Unit documentation.
Material pump won’t prime
properly or pumps air
Closed main air valve or clogged air line. Open air valve, clear air line.
p
p
p
properly, or pumps air
Not enough material pump air pressure.
Increase material pump pressure.
Worn or damaged ram piston.
Replace ram piston. See
Form# 310–533.
Hand valve closed or clogged.
Open, clear hand valve or exhaust.
Hand valve dirty, worn or damaged.
Clean, service hand valve.
Bent drum has stopped follower.
Replace drum.
Hydraulic valve is not working.
Replace hydraulic valve. See
Form# 310–533.
Hydraulic filter clogged.
Clean or replace hydraulic filter. See
Form# 310–533.
Low hydraulic fluid level.
Check for leaks. Refill reservoir. See
Form# 310–533.
Ram hand valve lever not in the down
position.
Move ram hand valve lever to the
down position.
Ram down pressure to low.
Increase ram down air pressure.
Continued on the next page.
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