PAGE 2-10
CHAPTER 1 GENERAL INFORMATION AND OPERATING INSTRUCTIONS
NMC-WOLLARD
2021 Truax Blvd. Eau Claire, WI 54703 ● P: 715-835-3151● F: 715-835-6625 ● www.nmc-wollard.com
TML-704H Maintenance Lift Manual No. 310547
2 OPERATION
In Case of Engine or Hydraulic Pump Failure
• An electrically operated hydraulic pump can provide emergency operation if
either the engine or engine pump/relief valve fails.
• Manual overrides on the platform, stabilizer, and safety valves may be used
if there is an electrical system failure.
NOTE: The emergency pump is not intended for normal operation.
Emergency Pump Operation (Engine or Engine Pump/Relief Valve Failure)
To start the emergency hydraulic pump, toggle the EMERGENCY PUMP
switch to ON position. Platform UP, stabilizer DOWN, and stabilizer UP
functions will operate under emergency pump control in the same manner as
they operate normally. All interlocks remain fully operational.
NOTE: For some units, it may be necessary to turn the ignition switch on the
instrument panel to the RUN position to allow valve solenoids to
energize.
The platform DOWN function works dierently under emergency power. If the
EMERGENCY PUMP switch is released once downward motion has started,
down motion will continue for some time as long as OPERATIONAL (Platform)
SAFETY and PLATFORM DOWN are held on. If platform stops by itself,
simply re-engage the emergency pump briey to restart motion. This method
of operation conserves battery power signicantly.
IMPORTANT! To conserve battery power during emergency pump operation,
turn o all lights.
If battery charge is too low for successful operation, the battery must be
"jumped" or replaced by a fresh battery.
To minimize risk of re or explosion when jump starting a vehicle:
• Keep sparks and ame away from battery to avoid battery gas explosion.
• Do not allow the booster and dead vehicles to touch. Set park brakes and
turn both vehicle ignitions OFF.
• Connect one end of the positive (red) booster cable to the positive (+)
terminal on the dead battery and then the other end of this red cable to the
positive (+) terminal of the booster vehicle battery.
• Connect the end of the negative (black) booster cable to the negative (-)
terminal of the booster vehicle battery and the other end of this black cable
to a unpainted bolt or bracket on the dead vehicle (good ground) located as
far as possible from the dead battery to minimize the possibility of igniting
any hydrogen gas.
SEPTEMBER 01, 2015
Property of American Airlines
To Next Page
Loading...
Need help?
General