SECTION IV
Electrical System
Figure 1. 12 VDC & 120 VAC Generators Detroit Diesel Engine
GENERATOR - 120 VOLT AC
Two belt driven electrical power producing units are used on the paver, one for 12 volt DC current and one for 120
volt AC current. (See Figure 1) The 120 volt AC generator is capable of supplying 26 amperes when the paver engine is
at full throttle. This power is used for the screed vibrators and the plug-in electric service outlet. There is no power output
unless the Throttle switch on the console is at Full or Soft Start position.
'When the paver is under load, the voltmeter should read not less than 115 volts. During no-load operation it
should read no more than 130 volts. The cycle readings on the frequency meter should be no less than 59 or more than
61. If cycles and voltage are not within this range, first check V-belt tension, clutch slippage, and then adjust governor to
increase or decrease RPM if necessary. (See engine speed paragraph in Section 2.)
120 VOLT AC PLUG-IN OUTLET
A plug-in type power supply outlet (receptacle) is provided on the paver for convenient availability of 120 Volt AC
current. This makes possible the use of small power tools such as drills and grinders for maintenance or repair work, and
provides a power source for extra lighting with plug-in extension cord, etc.
Figure 2. Main Panel - L.H. Side Of Engine Housing
The outlet is located inside the engine housing enclosure. It is necessary to remove the L.H. engine housing panel
to make the plug-in connection. (See Figure 2) CIRCUIT BREAKER FOR 120 VOLT AC SYSTEM
A circuit breaker for the 120 volt AC electrical system is located in the main power panel on the left side of the engine
housing. (See Figure 2) It must be manually reset.
12 VOLT STORAGE BATTERY
The paver battery is an Electric Storage Battery Co. No. 6TN-23, Military Part No. MS-35000-3. It is rated as
follows: Ampere hour capacity (20 hour rate) 100 AH Cold cranking (300 Ampere discharge @ 400 F), 5 Sec. Voltage -
7.20 volts, Minutes run to 6V-1.25 minutes.
The battery is contained in a wood-lined metal box in the LH sub-deck area of the tractor. (See Figure 3)
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