Blohm + Voss Oil Tools GraySpin Mark 40, Technical Documentation Manual

Page: 20 / 64

OP
ER
AT
ION
20
Problem: Cause: Solution:
Excessive noise
levels. • Mechanical vibrations.
• Motor incorrectly aligned.
• Air in circuit.
• Dumping over relief.
• Repair worn or damaged components.
• Align correctly.
• Bleed circuit.
• Adjust relief valve or pressure valve.
Motor
overheating. • Motor or cylinder seals
worn.
• Oil viscosity too low.
• Inadequate cooling
system.
• Overhaul motor.
• Reduce temperature or replace oil.
• Check or improve system.
Inadequate
torque. • System pressure too low.
• Control valve relief valve
is set too low.
• Set power to 2500 PSI.
• Increase pressure to motor by
adjusting appropriate relief on control
valve. Increase ¼” turn at a time.
Lock-nut must be loosened prior.
Inadequate
speed. • System GPM too low.
• Excessive drainage.
• Inadequate pump.
• Set power unit at 20 GPM.
• Overhaul motor.
• Replace.
Excessive
pressure or
speed. • Defective flow regulators.
•
Air in the circuit /
instability of relief valves.
• Adjust or replace.
• Bleed circuit, adjust or replace.
Pressure in the
drain line or
burst shaft seal. • Drainage connected to
the return line.
• Drain line pinched or too
small.
• Excessive motor
drainage.
• Connect directly to reservoir.
• Change line.
• Overhaul motor.
Trouble Shooting