2 alternator, Alternator – JLG 723A Service Manual User Manual

Page 138

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Electrical System

9.30

L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7

e. Starter Periodic Maintenance

A starter requires no routine maintenance beyond the
occasional inspection of the electrical connections, which
must be clean and tight.

Note: DO NOT disassemble the starter. The starter is
not serviceable and must be replaced in its entirety, if
defective.

f.

Starter Installation

1. Position the starter in its mounting opening on the

flywheel housing. Position the ground cable over the
correct starter mounting bolt. Secure the starter with
fasteners. Torque fasteners to 43 Nm (32 lb-ft).

2. Connect the positive (+) battery cable to the upper

solenoid stud. Install the wires to the upper solenoid
stud, and secure with lockwasher and nut.

3. Connect the wire to the solenoid mounting stud.

4. Properly connect the battery.

5. Close and secure the engine cover.

6. Remove the Do Not Operate Tag from the ignition

key switch and the steering wheel.

9.11.2

Alternator

Before using a battery charger, an attempt can be made
to recharge the battery by jump-starting the machine.
(Refer to the appropriate Operation & Safety Manual.)
Allow the engine to run, which will enable the alternator to
charge the battery.

If the engine alternator charging warning indicator
illuminates, perform the following checks:

1. Check the all battery cable connections at the

battery, and verify that they are clean and tight.

2. Check the external alternator wiring and

connections, and verify that they are in good
condition.

3. Check the fan belt condition and tension.

4. Verify that the alternator mounting hardware is tight.

5. Run the engine and check the alternator for noise. A

loose drive pulley, loose mounting hardware, worn or
dirty internal alternator bearings, a defective stator
or defective diodes can cause noise. Replace a worn
or defective alternator.

a. Alternator Removal

1. Park the machine on a firm, level surface with the

machine level, retract and level the boom. Place the
transmission control lever in the (N) NEUTRAL
position and engage the parking brake. Shut the
engine OFF.

2. Place a Do Not Operate Tag on both the ignition key

switch and the steering wheel, stating that the
machine should not be operated.

3. Allow the engine and all system fluids to cool.

4. Properly disconnect the battery.

5. Label and disconnect the wires attached to the

alternator.

Note: Record how the alternator is installed to ensure
correct installation later.

6. Loosen the top alternator mounting bolt (1) and

lower alternator mounting bolt (2).

7. Loosen the jam nut (3) on the belt tensioning

adjustment bolt (4) at the bottom of the alternator.

8. Turn the belt tensioning adjustment bolt (4) counter

clockwise to loosen the fan drive belt.

9. Remove the fan drive belt from the alternator.

10. Remove the lower mounting capscrew securing the

alternator to the lower mounting hole on the engine.

11. While supporting the alternator with one hand,

remove the upper mounting hardware from the
upper alternator mount. Remove the alternator from
the machine.

MZ5570

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