14
136 Workshop Manual, TSD3450E, Issue 1
2800
To check and to adjust the tension of the alternator belt Operation 14-3
1 Remove the access panel in the fan guard and proceed as follows.
2 Use a Borroughs belt tension gauge to check the tension at the position shown (A5). It should be 267 N,
which is equivalent to 2,5 mm of movement when a force of 11,3 N is applied. To adjust the tension, proceed
as follows.
3 Loosen the alternator pivot bolt (A3), the adjustment link bolt which is behind the fan pulley and the
adjustment bolt (A4). Move the alternator to obtain the correct belt tension and tighten the bolts.
4 Fit the access panel to the fan guard and run the engine for 15 minutes. Remove the access panel and check
again the tension.
5 If a new alternator belt is fitted, set the tension to 400 N, which is equivalent to 2,5 mm of movement when
a force of 16,6 N is applied. After the engine has been run for 15 minutes, check the tension and adjust it to
267 N; equivalent to 2,5 mm of movement when a force of 11,3 N is applied.
6 When the correct tension is obtained, fit the access panel to the fan guard.
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