Komatsu PC45MR-30403, Operation And Maintenance Manual

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2) Loosen nut (7).
3) Adjust with adjustment nut (8) of idle pulley (3).
4) Tighten nut (7) to fix idle pulley (3).
5) Check the belt tension of air conditioner compressor
again.
If the tension is not correct, adjust it again.
6) Check each pulley for breakage and wear of the V-
groove and check the V-belts for wear.
In particular, check carefully that the V-belt is not in
contact with the V-groove bottom.
If the V-belt is stretched and has no allowance for ad-
justment, or has slipping sound or squeak because of
cuts or cracks of the belt, ask your Komatsu distributor
to replace it.
When the new V-belt is installed, readjust it after oper-
ating for 1 hour.
7) Install undercover (6) with bolts (5) (M10, 4 pieces).
3.
Close engine rear cover (1).
METHOD FOR CLEANING AIR CONDITIONER RECIRC AIR FILTER
(Machine with cab specification)
k k
WARNING
When using the compressed air, there is a danger that dirt may scatter and cause personal injury.
Wear the protective equipment such as the protective eyeglasses and dust mask.
NOTICE
• As a guideline, the filters should be cleaned every 250 hours, but on dusty jobsites, clean the filters
more frequently.
• Before cleaning the recirculation air filter, stop the air conditioner.
1.
Take out the recirculation air filter (1).
Pull out the recirculation air filter (1) forward to remove it.
2.
Clean the recirculation air filter (1) with compressed air.
• If there is oil on the recirculation air filter (1), or if the
filter is extremely dirty, wash it in a neutral detergent.
After rinsing it in water, dry it thoroughly before using it
again.
• Replace the recirculation air filter with a new one ev-
ery year. If the clogging of the recirculation air filter (1)
cannot be removed by blowing with compressed air or
washing in water, replace the filter immediately.
3.
Restore the recirculation air filter (1).
MAINTENANCE PROCEDURE MAINTENANCE
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