Drive Belt: Testing and Inspection

NOTE: The Krikit measuring instrument is recommended for testing V-belt tension.


Handling of measuring instrument
For testing V-belt tension the measuring instrument can be handled in various ways:







a) With thumb and forefinger against rubber loop, with the finger tips resting on pushbutton.







b) With forefinger from above in rubber loop.







c) With forefinger laterally between rubber loop and pushbutton.

Testing







1 Lower indicator arm on measuring instrument.

2 Place measuring instrument on V-belt in center between pulleys. The lateral stop of the measuring instrument should rest laterally against V-belt (arrow).

Attention!
On double belt drive, make sure that the measuring instrument rests on one V-belt only.

3 Exert a uniform, vertical pressure on V-belt upper surface by means of pushbutton, until click spring is audibly (or noticeably) disengaging.

NOTE: Upon disengagement of click spring, do not continue pushing on measuring instrument, since otherwise a wrong measuring value will be indicated.







4 Carefully lift measuring instrument from V-belt. Avoid knocks against instrument and do not change position of indicator arm.
5 Read tensioning value at point of intersection of indicator arm and upper scale (KG scale, arrow).

The respective adjusting values refer to upper scale of measuring instrument.


Check condition of V-belt

Replace cracked, porous, burnt or worn V-belts.

Attention!
If one of the two V-belts of double belt drive for alternator and coolant pump fails due to wear, always replace both V-belts on principle.

Use only V-belts in pairs made by one and the same manufacturer.

V-belts are available as spare parts in sets only.

1 Move tensioning device or units into starting position.
2 Mount V-belt without using force.
3 Tension V-belt.