Axle Drive System; Battery; Lighting And Horn Systems; Hydraulic Steering System - TUG MZ Operation Maintenance & Parts Manual

2.

Axle Drive System

An electric drive system powers the MZ Tow Tractor (refer to Chapter 5 for further details).
The electronic drive system consists of the following major components, integrated to
function as a single drive system:
(a)
(b)
(c)
(d)
(e)
3.

Battery

An industrial 80-volt lead-acid traction battery powers the drive system.
4.

Lighting and Horn Systems

MZ electrical lighting systems include 12-volt headlights, brake lights, and back-up lights.
The vehicle's horn is also a 12-volt system.
5.

Hydraulic Steering System

The hydraulic system provides hydraulic pressure to drive the steering system. A single 72/80
VDC electric pump motor drives the hydraulic system.
6.

Brakes

The brake system uses DOT 3 brake fluid in a split system to deliver hydraulic power to both
the front dry disc brakes and the rear wet disc brakes.
7.

Chassis

The chassis has a 60" (1524 mm) wheelbase, welded unibody frame, and is supported by the
front leaf and rear coil suspension.
CD373
Transaxle. The vehicle's electric drive motor is an integral part of the rear axle. It
serves as a structural member for the rear axle to provide direct-drive traction power.
Controller. The Curtis controller determines motor speed and direction of rotation.
The controller receives direction commands from a directional control lever, speed
command from an accelerator assembly, and brake system signals from a brake
pressure transducer. The motor controller is located in a compartment on the left side
of the vehicle, adjacent to the battery bank.
Electronic-Accelerator Pedal Assembly
Informational Display (Gauge)
DC/DC Converter for operation of the 12-volt electrical lighting systems
MZ Tow Tractor
Chapter 1
Section 1
1-1-3
Orig