HAIMA 7 - Page 454

Troubleshooting
U-44
Step Inspection Action
9
Inspect drive belt
l Check drive belt
— Gy: (see b-1, drive belt inspection.)
l Is it normal?
Yes Go to next step.
No Replace drive belt, go to step13.
10
Inspect condition of drive belt.
l Is drive belt worn out?
l Is there any foreign materials inserted in it
or whether it is tainted with oil fouling?
Yes Remove foreign materials and oil
fouling or replace drive belt, go to step
13.
No Go to next step.
11
Inspect electromagnetic clutch
l Inspect electromagnetic clutch (see u-27.
electromagnetic clutch inspection.)
l Is it normal?
Yes Replace a/c compressor (excluding the
pressure plate of electromagnetic clutch,
a/c compressor belt pulley and clutch
stator coil), and then go to step 13.
No Replace electromagnetic clutch, go to
step 13.
12
Inspect a/c compressor noise
l Is noise from a/c compressor?
Yes Inspect a/c compressor visually, and
replace parts as required, go to next
step.
No If noise is from refrigerant pipeline,
repair loose or lost clamp and tighten
the loose bolt, go to next step.
13
Verify whether malfunction symptom occurs
after repair.
l Does a/c system noise disappear?
Yes Troubleshooting completed. Explain
causes to customer.
No Recheck malfunction symptoms, and
then repeat from step 1 if malfunction
reoccurs.