Autoquip COIL TRANSFER CARS - Manual (Page 32)

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DANGER !
To avoid personal injury, NEVER go under the lift platform until the load is
removed and the scissors mechanism is securely blocked in the open position.
See "Lift Blocking Instructions" section.
Lift lowers very slowly. • The down-solenoid is not operating properly due to
dirt or damage.
• Check for pinched tubing or hose. Where pipe is
used, check for obstruction in the line.
• The oil is extremely viscous due to low ambient
temperatures. Add or replace with lower weight oil
that stays thinner in cold conditions (5W-15, etc.)
PROBLEM POSSIBLE CAUSE AND SOLUTION
Lift raises, then lowers back
slowly. • The "Down" solenoid may not be seating. Remove
the solenoid coil and check again. If the lift does
not hold with the solenoid coil removed, the down
valve cartridge should be removed and cleaned or
replaced as necessary.
• The oil line, hose, or fitting may be leaking. Check
and repair if necessary.
• The check valve may not be seating. This is
indicated by the pump shaft and motor turning
backward on their own with no power applied.
Generally, this condition can be heard. Replace
the pump assembly.
TROUBLESHOOTING ANALYSIS