Systems Troubleshooting: 8-4
ENGINE
1.0 Will not turn over
Possible Cause Solution
1.1 A loose or corroded
battery terminal.
Clean and tighten the battery terminal connections.
1.2 The battery is dead. Recharge or replace the battery. Test the charging
system. Repair if necessary.
Do not attempt to jump start the truckmount
from a running vehicle. The amperage output
from an automobile will damage the charging
system of the truckmount.
1.3 The main fuse is blown. Check the main fuse.
If the fuse is blown, inspect the electrical system for
worn or shorted wires. Repair or replace as necessary.
1.4 The vacuum blower has
seized.
Attempt to turn the coupler by hand. If it will not turn
refer to the Vacuum System Troubleshooting Section.
1.5 The ignition switch is
faulty.
Test to see if there is power both to and from the
switch. Refer to the Electrical Section.
1.6 The starter solenoid is
faulty.
Test to see if there is power to solenoid with ignition in
“Start” position. Refer to Electrical Section.
1.7 The starter motor is faulty. Test to see if there is power to the motor with the
ignition in “Start” position. Refer to the Electrical
Section.
1.8 None of the above. Refer to a qualied service technician for further
troubleshooting.
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