Autoquip PDQ DOCK LIFT - Manual (Page 21)

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1. Change oil once a year or when it materially darkens or feels gritty. Also, check oil
for the presence of water (oil will turn milky in color.)
2. NEVER TRY TO DISASSEMBLE OR REPAIR A PUMP IN THE FIELD. These
pumps are high-precision devices requiring extreme precision in fit-up. When one is
damaged, there is seldom anything that can be repaired in the field. It is also more
economical to replace a pump than to refit old parts with new parts.
3. The pin, or roller bushing should be replaced whenever excessive wear is detected.
The rollers are furnished with the pressed-in bushing as a unit part.
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.
POWER UNIT
DANGER!
HIGH VOLTAGE!! Disconnect and/or lock out the electrical supply to the
power unit prior to any maintenance being performed.
1. The Contractor Power Unit utilizes a “Super-Torque” intermittent duty (one full lift
cycle per four minute period) 5 HP/208, 230, 04 460 Volts/60 hertz/3 phase motor
driving a high pressure positive displacement pump assembly with internal relief
check and dump valves.
2. Because Autoquip "Super-Torque" motors actually deliver substantially more
horsepower than their nameplate rating, they must always be wired for heavier
current-draw than standard motors of the same nameplate rating. However,
because of the "Super-Torque" motor’s starting efficiency and superior running
characteristics, circuit components do not have to be as large as for standard motors
of equal delivered horsepower.
GENERAL MAINTENANCE