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  TM 5-1730-245-14
4.21 FAN BELT - REPLACE, ADJUST.
THIS TASK CONSISTS OF: a. Removal
b.
Installation
c.
Adjustment
INITIAL SETUP
Tools:
Equipment Condition:
Toolkit, General Mechanics (item 5, Section III, Appendix B).
Side panels (8, fig. 1-2) removed.
Shop Equipment Automotive Maintenance and Repair.
Battery disconnected. See paragraph 4.19.
Organizational Maintenance, Common No. 1, less power
Cabinet top cover removed. Refer to 4.16.
(item 6, Section III, Appendix B)
NOTE
The fan belt shall be replaced every 2000 hours regardless of its condition
a. Removal. Refer to figure 4-11.
1) Loosen the alternator adjusting bolts (3) and move the alternator (4) inward to slacken the belt tension.
2) Remove the fan belt (1).
b. Installation. Refer to figure 4-11.
NOTE
It is important that the tension of a new belt be checked after installation, after the
first 25 hours and every 250 hours thereafter.
1) Install the new belt (1) in the pulley grooves and move the alternator (4) outward to apply tension to
the belt. Tighten the alternator adjusting bolts (3) Apply tension only by hand, do not use any leverage.
2) Ensure all pulleys are aligned center of pulley grooves.
Figure 4-11. Fan Belt Replacement.
4-27
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