44
Fig. 5.4. V-belts.
1-Compressor V-belt. 2 - Alternator V-belt. 3 -
Compressor. 4 - Alternator. 5 - Fan protection cover..
6- Fan V-belt.
5.4.1 Alternator maintenance.
Check the fan/alternator V-belt tension every 150 hours of operation. (Fig. 5.4).
The correct belt deflection is 8 mm, with the belt depressed (with a force of about 25N).
If adjustment is required:
loosen the pivot fasteners of the alternator and the adjustment link fasteners,
change the position of the alternator to give the correct tension. Tighten the pivot fasteners of the
alternator and the adjustment link fasteners (to 22 Nm),
check the belt tension again to ensure that it is still correct. If a new belt is fitted, the belt tension
must be checked again after the first 20 hours of operation.
5.4.2. Starter motor maintenance.
Push clutch pedal during engine starting to reduce starter motor load.
If the starter motor fails, have it repaired at specialized service.
WARNING:
!
Don’t start the starter motor when engine is on which may cause the motor damage.
Don’t crank the engine longer than 5 second and next crank can be made after 30
seconds.
5.4.3. Battery maintenance.
The battery (2-Fig.4.2) is mounted on the R.H. side under the cab step. To gain access to the battery,
remove the nut (3-Fig. 5.4.2) securing the shelf and deflect the shelf with the battery.
Check the electrolyte level every 50 hours of operation. The electrolyte level in each cell should be
10
15 mm above the top of separator plates and can be measured with glass tube. If necessary,
replenish each cell with distilled water to the required level.
When conventional battery is fitted, periodic inspection of electrolyte level and concentration is
required.
At regular intervals, clean the battery terminals and cable ends, then smear them with petroleum
jelly. Keep the battery top clean.
To ensure proper battery performance, check also at regular intervals the electrolyte concentration
so that the battery charge level could be defined.
If the battery is found discharged to 50 %, or more, it should be recharged until a signs of full battery
charge are evident (intensive gas emission) and the electrolyte concentration.
NOTE:
In some territories maintenance free batteries are fitted on tractors. Follow the
manufacturer’s maintenance instructions.
