Progressive Turf Equipment Pro-Max 36 - Manual (Page 36)

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“V” BELT ADJUSTMENT:
Begin by loosening 4 bolts at the base of the gearbox, adjusting the long threaded
bolt slides the gearbox back, therefore tightening the belts. After proper tension is
achieved, tighten 4 bolts at base of gearbox. You may have to place a 1/2” nut
under the head of the long-threaded bolt to increase your adjustment length.
When changing belts, removal of the grease fitting from the top of the center
spindle will make installation easier. Be sure the belts run in the proper groove.
“V” BELT TENSION:
Proper belt tension 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 ensure proper belt tension, the following procedure is
recommended.
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 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.