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Groundsmaster 5900/5910 Page 5 -- 35 Electrical System
Mega Fuses
Two (2) mega fuses are used on the Groundsmaster for
protection of high amperage circuits. One of the mega
fuses is a 125 amp fuse and protects the alternator cir-
cuit. The other mega fuse is a 300 amp fuse that is a
component in the intake air heater circuit. The mega
fuse blocks are attached to a hood support framebehind
the batteries (Fig. 61).
Testing
1. Make sure ignition switch is OFF. Remove key from
ignition switch.
2. Disconnect battery cables from battery terminals
(see Battery Service in the Service and Repairs section
of this chapter).
3. Raise hood to gain access to fuse holders.
4. Press latch that retains fuse holder cover and raise
cover.
5. Remove flange nuts and lock washers that secure
fuse to holder (Fig. 62). Remove fuse for testing.
6. Fuse should have continuity across the terminals.
7. After testing, slide fuse onto fuse holder studs. Place
removed cables and jumper straps onto studs.
8. Secure fuse and conductors with lock washers and
flange nuts. Torque nuts from 9to13ft--lb(12.3to17.6
N--m).
9. Close and secure fuse holder cover.
10.Lower and secure hood.
11.Connect battery cables tobattery terminals(seeBat-
tery Service in the Service and Repairs section of this
chapter).
1. Alternator mega fuse 2. Intake heater mega fuse
Figure 61
1
2
1. Alternator fuse holder
2. Heater fuse holder
3. 300 amp mega fuse
4. Jumper strap
5. Contactor
6. Battery cable
7. Flange nut
8. Lock washer
9. Alternator cable
10. 125 amp mega fuse
Figure 62
7
8
5
6
1
2
3
4
4
9
10
9to13ft--lb
(12.3 to 17.6 N--m)
Electrical
System