Progressive Turf Equipment TDR-22 1393176 and Above - Manual (Page 41)

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“V” BELT ADJUSTMENT
Each mower deck is equipped with 2 spindle drive belts, each with a dedicated
draw-type screw tensioner. To adjust belt tension, first remove cover from the
side of the deck to be tensioned. Loosen jam nut on tensioner screw and loosen
bolt fastening the idler pulley (do not remove). Adjust belt tension the belt using
the threaded bolt (see below for specs). Tighten the nut on the pulley and the
locknut on the adjuster bolt.
Ensure belts are properly aligned in the correct groove when replacement is
required.
“V” BELT TENSION
Proper belt tensioning is a fundamental factor in the successful V-belt operation.
Lack of tension will cause slippage, and too much tension will cause excessive
belt stretch as well as damage to the drive components, such as bearings and
shafts. Therefore, to assure proper belt tension, the following procedure is
recommended.
CHECKING BELT TENSION
At the mid-point of the span, apply a deflection force with a spring scale in the
direction perpendicular to the span until the belt is deflected the 3/8”. The
recommended force to deflect the belt is a minimum of 4.9 lbs. to a maximum of
7.3 lbs.
The first 24 to 48 hours of operation is the belt “run in” period. To ensure
satisfactory belt performance, belt tension should be checked during this time
period.