3-10 Published 08-25-09, Control # 077-04
ELECTRICAL SYSTEM RT9130E SERVICE MANUAL
cool hydraulic fluid instead of bypassing the motor
and flowing through the oil cooler solenoid valve.
3. Repair is straightforward.
a. MOTOR: Remove faulty motor or faulty trigger
(switch or relay), install new motor or trigger, install
new fuse, test motor. For further information, see
the applicable section in this manual.
b. SOLENOID VALVE: Remove faulty valve or
solenoid, install new valve or solenoid, install new
fuse, fill fluid system, test valve.
c. LMI: Repair per LMI manual, install new fuse, test
per LMI manual.
d. ROTATION INDICATOR: Remove driver assembly
or sensor, install driver assembly or sensor, install
new fuse, test thumper. For further information on
rotation indicator, refer to Section 5 - HOIST AND
COUNTERWEIGHT.
Alternator Replacement
Removal
1. Disconnect the batteries.
2. Open the engine compartment.
3. Tag and disconnect the electrical leads from the
terminals on the alternator.
4. Turn the tensioner above the alternator clockwise to
remove tension from the belt. Slip the belt off of the
alternator pulley, then let the tensioner return to its
normal position.
5. Remove and tag all wires. Remove the alternator link
capscrew and the mounting capscrew. Remove the
alternator.
Installation
1. Inspect the belt. Verify it has no cracks or other damage.
Replace damaged belt as needed.
NOTE: Install alternator on the mounting bracket with head
towards turbocharger.
2. To assemble the alternator, the mounting components
must be tightened in the following sequence.
a. Alternator-to-alternator bracket capscrew.
b. Lower brace-to-alternator capscrew.
c. Lower alternator brace-to-water pump capscrew.
d. Torque brace-to-alternator bolt to 43 Nm (32 foot-
pounds). Torque alternator-to-alternator bracket bolt
to 77 Nm (57 foot-pounds).
3. Install the belt on all engine pulleys except the alternator
pulley for now.
4. Turn the tensioner clockwise. Slip the belt onto the
alternator pulley, then carefully return the tensioner to its
normal position so it puts tension on the belt. Make sure
the belt is centered on the tensioner.
5. Check belt tension at the belt’s longest span (longest
distance between pulleys). At the center point of the
longest span, push in on the belt with your thumb. Verify
you can deflect the belt no more than 10 to 13 mm (3/8
to 1/2 inch) with your thumb. (Or, using a belt tension
gauge, verify there is 267 to 578 N (60 to 130 pounds) of
tension on the belt in the middle of its longest span.)
Replace belt if it is too loose (overstretched).
6. Verify tensioner bolt is torqued to 43 Nm (32 foot-
pounds).
7. Connect the electrical leads to the terminals as tagged
during removal.
8. Connect the batteries. Close the engine compartment.
Check
1. Run engine. Verify reading of voltmeter on front console
is 12 volts or greater. Make repairs as needed.
2. Continue troubleshooting charging system as needed if
replacement of alternator did not correct problem in
charging system.
Starter Replacement
Removal
1. Disconnect the batteries.
2. Open the engine compartment.
3. Tag and disconnect the electrical leads from the
terminals on the starter.
4. Remove the bolts holding the starter to the mounting
pad. Remove the starter.
Installation
1. Place the starter on its mounting pad. Secure the starter
with the bolts. Torque the bolts to 43 Nm (32 foot-
pounds).
2. Connect the electrical leads to the terminals as tagged
during removal.
3. Connect the batteries. Close the engine compartment.
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