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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
1 DESCRIPTION
• Power to energize the Stabilizer Down valve solenoid SV2A ows through
control switch SW10 (or SW11).
• Power to energize the Stabilizer Up valve solenoid SV2B must ow through
control switch SW10 (or SW11) and platform down switch LS-PL. Platform
down switch LS-PL is mounted on the left rear of the chassis, and is
actuated when the platform is fully lowered.
Engine and Drive Train
The TML-704H Maintenance Lift is designed with a self-contained
quick-change modular power package (engine, transmission, driveshaft,
cooling system, engine electric pack, and the engine-driven hydraulic pump
system) which is assembled into an easily removable frame.
The quick-change feature makes it possible to remove and replace the
complete power package for rapid turnaround of the vehicle. The
self-contained package can be run for testing outside of the chassis. A test
stand with fuel tank and electrical controls is available from Wollard for this
purpose.
Because of the modularity of the power package, it is possible to furnish the
TML-704H with a selection of engine systems, both diesel and gasoline.
Both front and rear axles and driveshaft are conventional automotive type,
with disc brakes on the front and drum brakes on the rear. The rear axle has a
limited slip dierential to provide improved traction in wet, ice, and snow
conditions.
Brake System
The standard brake system is a non-powered, dual-circuit system using
standard automotive components. The front wheels have disc brakes and the
rear have self-adjusting drum brakes. A pressure dierential metering valve
balances the pressures between the front and rear brake systems to assure
safe, eective braking. This valve also monitors pressures in both systems
and signals system malfunctions via the "Brake Fault" light on the instrument
panel.
Handbrake
Rear axle brakes are also cable-operated by the handbrake lever. The lever is
provided with a locking set screw to prevent unauthorized adjustment.
SEPTEMBER 01, 2015
Property of American Airlines
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