Main Electrical System; General; Wire Harnesses; Fuse And Relay Replacement - Manitowoc Grove CD3340B Service Manual

CD3340B/YB4411

MAIN ELECTRICAL SYSTEM

General

The electrical system used on this machine is a 12 volt,
direct current (DC) system with a (-) negative ground. The
power is supplied by one 12 volt battery.
An alternator supplies the necessary current (amps) for
system operation, and charging of the battery, when the
engine is running. A voltage regulator on the alternator
controls the voltage in the charging system. A voltmeter is
installed in the instrument panel in the cab for monitoring the
battery charge.

Wire Harnesses

Seven wire harnesses connect the electrical system
components:
1. Dash Wire Harness
2. Outrigger Wire Harness (Cab)
3. Outrigger Wire Harness (Circuit Board to Cab)
4. Outrigger Wire Harness (Circuit Board to Outrigger
Valve)
5. Main Frame Wire Harness
6. Transmission Wire Harness
GROVE
7. Engine Wire Harness

Fuse and Relay Replacement

The fuses and relays are located on fuse blocks under the
control panel (Figure 3-1, 3-2 and 3-3) and in the electrical
compartment behind the cab (Figure 3-4 and 3-5).
The following figures show the fuse location, rating and
circuit functions.
8465-5
Fuse Box 1
Published 04/07/2015 Control # 569-00
ELECTRIC SYSTEM
8465-6
Fuse Box 2
FIGURE 3-1
3-3
3