Table 3. Belt Tension Chart

TM 9-2320-312-24-2

Specifications Section

Table 3

Belt Tension Chart

Kent-Moore Gauge

Gauge Reading

Numbers

Size of

Width of Belt

Number

Belt

Belt Tension

Number of the

of the Old

"Initial"(1)

"Used"(2)(3)

New Gauge

Gauge

534 ± 111 N

3/8

10.72 mm (0.422 inch)

400 ± 22 N (90 ± 5 lb)

BT-33-97

BT 3397

(120 ± 25 lb)

578 ± 111 N

1/2

13.89 mm (0.547 Inch)

445 ± 44 N (100 ± 10 lb)

BT-33-97

BT 3397

(130 ± 25 lb)

712 ± 111 N

BT-33-

15.88 mm (0.626 Inch)

445 ± 44 N (100 ± 10 lb)

BT 3372C

(160 ± 25 lb)

72C

712 ± 111 N

BT-33-

11/16

17.48 mm (0.688 Inch)

445 ± 44 N (100 ± 10 lb)

BT 3372C

(160 ± 25 lb)

72C

712 ± 111 N

BT-33-

3/4

19.05 mm (0.750 Inch)

445 ± 44 N (100 ± 10 lb)

BT 3372C

(160 ± 25 lb)

72C

712 ± 111 N

15/16

23.83 mm (0.938 Inch)

445 ± 44 N (100 ± 10 lb)

BT-33-77

BT 3372C

(160 ± 25 lb)

1068 ± 111 N

BT-33-

8PK

27.82 mm (1.095 inch)

890 ± 44 N (200 ± 10 lb)

BT 33109

(240 ± 25 lb)

109

801 ± 111 N

BT-33-

6PK

20.94 mm (0.824 Inch)

667 ± 44 N (150 ± 10 lb)

BT 33109

(180 ± 25 lb)

109

Measure the tension of the belt that is farthest from the engine.

(1)

Belt tension "Initial" is for a new belt.

(2)

Belt tension "Used" is for a belt that has operated for 30 minutes or more of operation at the rated speed.

(3)

If a belt falls below the "Used" belt tension, the belt should be tightened again to the high side of the "Used" belt tension.

Table 4

For DAYCO Supplied Belts Only

Belt Tension

Size of Belt

"Initial"(1)

"Used"(2)(4)

.380 (V-Belt)

623 ± 22 N (140 ± 5 lb)

245 - 534 N (100 ± 5 lb)

.440 (V-Belt)

667 ± 22 N (150 ± 5 lb)

245 - 534 N (100 ± 5 lb)

.500 (V-Belt)

712 ± 22 N (160 ± 5 lb)

245 - 534 N (100 ± 5 lb)

.600 (V-Belt)

779 ± 22 N (175 ± 5 lb)

245 - 534 N (100 ± 5 lb)

.660 (V-Belt)

890 ± 22 N (200 ± 5 lb)

245 - 534 N (100 ± 5 lb)

.790 (V-Belt)

890 ± 22 N (200 ± 5 lb)

245 - 534 N (100 ± 5 lb)

4 - RIB PVK

623 ± 22 N (140 ± 5 lb)

267 - 445 N (90 ± 5 lb)

5 - RIB PVK

779 ± 22 N (175 ± 5 lb)

334 - 556 N (100 ± 5 lb)

6 - RIB PVK

934 ± 22 N (210 ± 5 lb)

400 - 667 N (130 ± 5 lb)

8 - RIB PVK

1157 ± 22 N (260 ± 5 lb)

534 - 890 N (180 ± 5 lb)

10 - RIB PVK

1557 ± 22 N (350 ± 5 lb)

667 - 1112 N (230 ± 5 lb)

12 - RIB PVK

1869 ± 22 N (420 ± 5 lb)

800 - 1335 N (270 ± 5 lb)

15 - RIB PVK

2336 ± 22 N (525 ± 5 lb)

1000 - 1669 N (350 ± 5 lb)

(1)

Belt tension "Initial" is for a new belt.

(2)

Belt tension "Used" is for a belt that has operated for 30 minutes or more of operation at the rated speed.

(4)

If a belt falls below the "Used" belt tension, the belt should be tightened again to the "Initial" belt tension.