and dirt, service the air compressor air cleaner as
b. Compressor Drive Belt Check and Adjustment.
(1) With the engine stopped, check engine-to-
(1) Remove the setscrew (1, fig. 3-5) and remove
compressor drive belt tension. When the drive belts
the air cleaner assembly from the air inlet elbow on
are properly adjusted, you should be able to deflect
them one-half to three-fourths inch using thumb
pressure at midpoint of the belt.
(2) To adjust belt tension, loosen the cap screw
(1, fig. 3-4) that secures the belt guard (2) to the
engine. Loosen the four bolts (4) that secure the
engine mounting base to the air receiver (6).
Air compressor drive belt tension adjustment.
(3) Turn the engine position adjusting bolt (7)
clockwise to tighten the drive belts or coun-
terclockwise to loosen the belts. Make sure belt
pulleys are aligned and that shafts are perpendicular
to belts when you finish adjusting the tension.
(4) After proper adjustment is made, tighten the
(2) Remove the bolt (2) and nut (3); separate the
engine base mounting bolts (4) and tighten the belt
parts of the air cleaner.
guard cap screw (1).
(5) If belts are frayed, worn, oil saturated,
(3) Wash the element (6) in soapy water. Squeeze
and shake dry.
cracked, or show signs of overheating, refer to
(4) Wash all metallic parts in dry cleaning
solvent (fed. spec. P-D-680). Dry thoroughly.
(5) Inspect the element for clogging, holes,
more frequently when you operate the lubricating
and servicing unit under conditions of extreme dust