NMC-WOLLARD 140 - Alternator; Battery; Current Regulator; Electrical System

NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M140 Tow Tractor Manual No. 46054
PAGE 1-7
CHAPTER 1 GENERAL INFORMATION AND OPERATING INSTRUCTIONS
1 DESCRIPTION
OCTOBER 01, 2015
1.4.13 Electrical System
The tractor uses a conventional 12-volt electrical system to supply power for
the lights, horn, starter motor, ignition, and instruments. A standard battery
and alternator is used. Some tractors are built with an optional 24-volt system.
1.4.14 Battery
The battery is a conventional 12-volt type with a positive cable and a negative
ground cable. The cables have protective boots at the battery end.
1.4.15 Alternator
Electrical power is supplied by a belt-driven alternator mounted on the right
front of the engine. It produces three-phase alternating current and voltage,
rectied to DC by a full-wave rectier bridge using six diodes. The alternator
does not require a cutout relay.
1.4.16 Current Regulator
The current regulator is part of the alternator assembly. It determines output
current according to load, such as headlights, rear lights, etc.
1.4.17 Starter
The starter motor is a gear-reduction type mounted on the automatic
transmission housing at the rear of the engine. The starter motor is used to
turn the engine fast enough to start the engine.
1.4.18 Lights and Accessories
Two head lights are on the front of the tractor. The stop/tail lights and rear
backup lights are in the rear body. The backup lights can also be used as
work lights (there is a separate switch for this purpose, see gure 1).
1.4.19 Instrument Panel
All driver instruments are located on the instrument panel (see Figure 1):
1. Voltmeter 2. Engine coolant temperature gauge
3. Oil pressure gauge 4. Transmission oil temperature gauge
5. Fuel gauge 6. Ignition switch
7. Hour meter 8. Switch frame (non functional)
9. Blank (non functional) 10. Rear work light switch.
11. Head and tail light switch 12. Panel Plate (non functional)
13. Tachometer (optional) 14. Glow plug indicator
15. Engine warning indicator 16. Engine stop indicator
17. Blank (non functional) 18. Brake failure indicator
19. Transmission maintenance required indicator