7
HYDRAULIC TROUBLE SHOOTING CHART
CONDITION 1 CONDITION 2
Pump cavitation recognized by excessive noise. Erratic operation of conveyor and/or spinner.
CAUSE CAUSE
• Air entering system through suction lines. • Low oil.
• Suction line kinked, twisted or too long. • Worn or defective motor.
• nadequate size suction line. • Dirty, worn or defective flow control valve.
• Oil too heavy. • Plugged filter.
• Excessive pump speed. Normal pump • Relief valve setting too low.
speed 1200 to 1500 RPM. • Pump cavitation.
• Air vent on reservoir tank is blocked.
CORRECTION CORRECTION
• Check line from reservoir for possible leaks. • Fill reservoir to a 3⁄4full level.
• nstall suction line as short and straight as • Repair or replace motor.*
possible. • Clean, repair or replace flow control.*
• ncrease suction line size. • Replace filter element and clean filter.
• Drain and replace with a low viscosity • Adjust relief valve for 1500 PS .
non-detergent oil. • Refer to pump section.
• Pump capacity is 16 GPM at 1000 RPM. • Clean or replace vent cap to admit
Decrease PTO speed accordingly. atmospheric pressure to inside of the tank.
CONDITION 3 CONDITION 4
Slow operation of conveyor and/or spinner. Conveyor and/or spinner will not operate.
CAUSE CAUSE
• Worn or defective pump. • Quick disconnects are dirty, damaged, or
• Worn or defective motor. improperly connected.
• Pump cavitation. • Hose connections wrong.
• nsufficient pump speed. • Foreign material in valve compensator.
CORRECTION CORRECTION
• Repair or replace pump.* • Clean or replace and properly connect.
• Repair or replace motor.* • Refer to illustration.
• Refer to pump section. • Remove compensator and clean.
• Pump capacity is 16 GPM at 1000 RPM.
ncrease PTO accordingly.
