Lull 944E-42 Service Manual Bedienungsanleitung PDF herunterladen (Seite 173)

9-15

944E-42

Electrical System

9.8 CHARGING CIRCUIT

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 (2) to charge the battery.

If the engine alternator charging warning indicator

illuminates, perform the following checks:

1. Check 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. 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.

9.8.1 Alternator

a. Alternator Removal

1. Open the engine cover. Allow the system fluids to

cool.

2. Properly disconnect the batteries.

3. Install a drive ratchet into the square hole in the

serpentine belt tensioner bracket.

4. While lifting the automatic belt tensioner away from

the belt, remove the fan serpentine belt.

Note: Record how the alternator is installed to ensure

correct installation later.

5. Label and disconnect the wire leads attached to the

alternator.

6. Remove the lower mounting capscrew securing the

alternator to the lower mounting hole on the engine.

7. While supporting the alternator with one hand,

remove the upper (longer) mounting hardware from

the upper alternator mount. Remove the alternator

from the machine.

b. Alternator Installation

1. Position the alternator and align with the upper

alternator mount on the engine bracket. Insert the

upper (longer) mounting hardware through the

alternator mount. Thread the longer capscrew into

the alternator front mount. DO NOT tighten

completely at this time.

2. Align the lower alternator mount hole with the lower

mounting bracket on the engine, and insert the lower

mounting capscrew. Tighten the lower capscrew and

upper capscrew securely.

3. Place a drive ratchet into the square hole on the

serpentine belt tensioner bracket. Apply pressure

against the tensioner bracket and route the

serpentine belt onto the alternator and engine

pulleys. Release and check the tensioner pulley to

verify that it is pivoting freely in order to provide the

proper tension on the belt. Check for proper belt

alignment. (Refer to the appropriate Operation &

Safety Manual.)

4. Connect the previously labeled wire leads to the

alternator.

5. Properly connect the batteries.

6. Close and secure the engine cover.

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