1-2-6
Rev 3
CD373
Chapter 1
Section 2 MZ Tow Tractor
7. Parking Brake
The parking brake uses the wet disc brake located inside the rear axle. The parking brake
lever is located to the right of the driver’s seat in the driver’s compartment.
(a) To apply parking brake, lift actuating lever up.
(b) To release parking brake, push actuating lever down.
WARNING: ALWAYS USE PARK BRAKE WHEN LEAVING VEHICLE.
DRIVE TRAIN HAS NO “PARK” POSITION, AND MUST RELY ON
PARK BRAKE BEING ENGAGED BY OPERATOR TO PREVENT
VEHICLE FROM ROLLING.
D. 12 VDC ELECTRICAL SUPPLY PANEL
The main 12 VDC electrical supply panel is located inside the driver’s side service bin.
E. PREOPERATIONAL CHECKS
Check the operation of vehicle and that all controls are in good working order. Report a faulty tractor
and do not use until repaired. Procedures for preliminary checks before maneuvering the vehicle to an
aircraft shall include (but may not be limited to) the following items. See Chapter 2, Section 1 for daily
periodic maintenance checks.
1. Battery
Assuming a minimum 80% charge, the duration of usable charge of the MZ battery will vary
from several hours to perhaps a day or more. Variables that affect length of usable charge
include the percentage of initial day’s charge, intensity of use, size and condition of battery,
weight of towed loads as well as environmental factors such as ambient temperature. The
battery should be fully charged before the unit is put into service on a daily basis. For a
complete discussion on battery charging cycles and electrolyte maintenance, see Chapter 1,
Section 6.
WARNING: NEVER TOP OFF CELLS WITH DISTILLED WATER
BEFORE FULLY CHARGING THE BATTERY.
(a) Check the battery fluid level. Top off with distilled or approved drinking water, as
necessary.
(b) If disconnected, connect the battery cables.
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