TM 9-4110-255-14
4-38. V-BELTS REPLACEMENT AND ADJUSTMENT . - Continued
(2) Fan V-Belt.
(a) Work V-belt (6) around condenser fan (8).
(b) Slip V-belt (6) onto clutch (13) and compressor pulley (7).
(c) Adjust tension per steps below.
(d) Using tags and wiring diagram (fig. 1-4), attach connectors (4). Remove tags.
c. Adjustment.
(1) Remove eight bolts (1), lock washers (2), and belt access plate (3).
CAUTION
Too little tension causes slippage or slip and grab, causing the belt to break. If the belt does not
break, the slip will cause excessive cover wear, burn spots and overheating. Too much tension
can cause belt heating and excessive stretch, as well as damage to drive components, such as
sheaves and shafts. Excessive tightness will also place heavier loads on the bearings causing
them to fail prematurely.
(2) Compressor V-Belt.
(a) Turn swivel bolt (10) counterclockwise to set V-belts (11) tension.
(b) Belt tension is correct when 4 lb (2 kg) force is applied to the mid point of the V-belt and it deflects
0.38 in. (1 cm). When the correct tension is reached, tighten four bolts (9).
(3) Fan Belt.
(a) Be sure idler pulley (14) is centered under V-belt (6).
(b) Push on idler pulley to set V-belt tension. Belt tension is correct when 4 lb (2 kg) force is applied to
the mid point of the belt and it deflects 0.38 in. (1 cm). When the correct tension is reached, tighten bolt (5).
(3) Install belt access plate (3), eight new lock washers (2) and bolts (1).
NOTE
FOLLOW-ON MAINTENANCE:
Close both side doors.
Connect battery (para 4-35) and put unit back into service.
4-100
