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Komatsu WA470-5H User Manual

Komatsu WA470-5H
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SERVICE PROCEDURE MAINTENANCE
4-44
CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST 0.
CHECKING 0.
The standard deflection between the air conditioner compres-
sor pulley and crank pulley when pressed with a thumb
(approx. 98N (10 kgf)) should be approx. 16 - 20 mm (0.6 - 0.8
in).
When a belt tension gauge is used, the standard tension is
within a range of 353 - 530N (36 - 54 kgf).
CHECK WHEN CHANGING THE V-BELT 0.
The standard deflection between the air conditioner compressor pulley and fan pulley when pressed with a thumb
(approx. 98N (10 kgf)) should be approx. 12 - 17 mm (0.5 - 0.7 in).
When a belt tension gauge is used, the standard tension is within a range of 530 - 745N (54 - 76 kgf).
REMARK
When the belt has been replaced with a new part, a high tension is necessary, so the initial tension is in
the value given above.
ADJUSTING 0.
1. Loosen nuts (1) and (2), and move compressor (3) to
adjust.
2. Tighten nuts (1) and (2) to hold compressor (3) in position.
3. Check each pulley for damage, wear of the V-groove, and
wear of the V-belt. Be particularly careful to check that the
V-belt is not in contact with the bottom of the V-groove.
4. Replace the V-belt if it has stretched, leaving no allowance
for adjustment, or if the belt is cut or cracked.
If the V-belt has been replaced with a new part, there will be
initial elongation, so inspect and adjust it again after one-
hour of operation.
CHECK FOR LOOSE WHEEL HAB NUTS, TIGHTEN 0.
If wheel hub nuts (1) are loose, tire wear will be increased and
accidents may be caused.
1. Check for loose nuts, and tighten if necessary.
When checking for loose nuts, always turn the nuts in the
direction of tightening to check.
Tightening torque: 825 to 1030 N²m
(84 to 105 kgf²m, 607.6 to 759.9 lbft))
2. If any stud bolt is broken,replace all the stud bolts for that
wheel.

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Komatsu WA470-5H Specifications

General IconGeneral
BrandKomatsu
ModelWA470-5H
CategoryLifting Systems
LanguageEnglish

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