Testing And Adjusting Air Conditioner Compressor Belt Tension - Komatsu PC200-8M0 Shop Manual

101 Testing and adjusting, Part 1
Testing and adjusting air conditioner compressor belt ten-
Testing and adjusting air
conditioner compressor belt
tension
k
Stop the machine on a level ground and
lower the work equipment to the ground.
Testing
1. Open the engine hood and remove the belt
guard from the top of the air conditioner com-
pressor.
2. Press the intermediate point of the belt
between fan pulley and compressor pulley with
a finger and measure deflection (a) of the belt.
Belt pressing force: 60 N {6.2 kg}
q
PC200, 200LC, 220, 220LC-8M0
Adjusting
a If the belt deflection is abnormal, adjust it
according to the following procedure.
1
1. Loosen bolts (1) and (2).
2. Move compressor (3) and bracket (4) together
to adjust the belt tension.
3. After positioning compressor (3), tighten bolts
(1) and (2).
a Check each pulley for breakage, wear of
the V-groove, and contact of the V-belt
and V-groove.
a If the V-belt is so lengthened that the
adjustment allowance is eliminated or it
has a cut or a crack, replace it.
a If the belt is replaced, adjust their tension
again after operating the machine for 1
hour.
a After tightening the bolts, check the belt
tension again according the above proce-
dure.
4. After finishing measurement, return the removed
parts.
SEN06127-00
29
30-101