Detroit Diesel 4000 Series, Service Manual, Page: 1700 / 2706

SERIES 4000 12/16V SERVICE MANUAL
19. If measured tension value does not correspond to specified value, V-belt tension must
be corrected. See Figure 1019.
1. Hex Bolt 3. Clamping Nut
2. Locknut
Figure 1019 Pretensioning V-Belt
20. Loosen the locknut (2) to allow for tension adjustment
21. Tighten clamping nut (3) to tension V-belt away from engine until value on V-belt tension
gage (See Figure 1020) is within the specified range.
22. Retighten locknut (2) to specification. Refer to section A 003. (See Figure 1020)
23. Tighten hex bolts (1) to specification. Refer to section A 003.
24. Again check V-belt tension.
NOTE:
If measured value does not correspond to specified value, retension V-belt.
All information subject to change without notice.
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