Operation and maintenance manual

Drive Belt Tension QSB4.5 and QSB6.7
Page V-16 Section V - Maintenance Specifications
Drive Belt Tension
Tension Chart
SAE Belt Size Belt Tension Gauge Part No. Belt Tension New Belt Tension Range Used*
Click-type Burroughs N lbf N lbf
0.380 in 3822524 620 140 270 to 490 60 to 110
0.440 in 3822524 620 140 270 to 490 60 to 110
1/2 in 3822524 ST-1138 620 140 270 to 490 60 to 110
11/16 in 3822524 ST-1138 620 140 270 to 490 60 to 110
3/4 in 3822524 ST-1138 620 140 270 to 490 60 to 110
7/8 in 3822524 ST-1138 620 140 270 to 490 60 to 110
4 rib 3822524 ST-1138 620 140 270 to 490 60 to 110
5 rib 3822524 ST-1138 670 150 270 to 530 60 to 120
6 rib 3822525 ST-1293 710 160 290 to 580 65 to 130
8 rib 3822525 ST-1293 890 200 360 to 710 80 to 160
10 rib 3822525 3823138 1110 250 440 to 890 100 to 200
12 rib 3822525 3823138 1330 300 530 to 1070 120 to 240
12 rib K section 3822525 3823138 1330 300 890 to 1070 200 to 240
31 rib - 3164750 1668 375 1330 to 1560 300 to 350
NOTE: This chart does not apply to automatic belt tensioners.
* A belt is considered used if it has been in service for ten minutes or longer.
* If used belt tension is less than the minimum value, tighten the belt to the maximum used belt value.