Prerequisites for testing the alternator

AR15.40-S-5009E

Prerequisites for testing the alternator

17.03.2020

Model

447 with engine 274, 622, 651, 654

Model

448 with engine 274

Model

907 with engine 274, 654

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A



Remove

1

Remove lower engine compartment lining.

Model 447, 448

AR61.20-S-1105E

Model 907 with code XM1 (Noise abatement measures)

AR61.20-D-1105TS

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

2

Raise vehicle.

Model 907

Topical note

Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01TS

AR00.60-D-1000-04TS



Check

3

Check whether electric lines of circuit 30 are fitted tightly and are in perfect condition.

 Check following positions:
Battery positive line on battery,
Positive line on fuse box,
Positive line at the starter,
Positive line on alternator.

If there is a problem,



repair circuit 30 electric lines and fasten.

4

Check whether electric lines of circuit 31 are fitted tightly and are in perfect condition.

 Check following positions:
Battery ground line to battery
Ground line from the transmission to the body.

If there is a problem,



repair circuit 31 electric lines and fasten.

5

Check condition of poly-V-belt.

Model 447 with engine 654.9

AR13.22-S-1351EA

Model 447 with engine 274, 622, 651
Model 448 with engine 274
Model 907 with engine 274

AR13.22-S-1351E

Model 907.1/2/6 with engine 654.9

AR13.22-D-1351TSR

6

Start engine.

7

Check charge indicator in instrument cluster.

 In case of correct charging voltage, no fault message is shown in the display on the instrument cluster.

If a fault message appears,



Measure charging voltage and rectify fault.

8

Switch off engine.



Install

9

Attach lower engine compartment lining.

Model 447, 448

AR61.20-S-1105E

Model 907 with code XM1 (Noise abatement measures)

AR61.20-D-1105TS

10

Lower vehicle.

Model 907