Avtodizel ???-238??, Operating Instructions Manual, Page: 114 / 254

114
The tension of the alternator drive belt adjust by moving of the
alternator relatively the point of its fastening. Before adjustment screw
out the alternator fastening bolts, fastening nut of the alternator rod and
bolt of fastening of the alternator to the rod. After adjustment reliable
fix the alternator. At increased stretching and breakage even one of
belts replace them with a complete set both belts for maintenance of
uniform loading on them.
Fig. 51 Checking of water pump belt tension
Fig. 52. Checking of compressor
belt tension
Fig. 53. Checking of alternator
belt tension