8-6
Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Thermo Label - Use
When the thermo label reaches a specified temperature, the white heat-sensitive area turns into black.
Note: Once the heat-sensitive area turns its color, it will never return to the original color again.Therefore, if the en-
gine is stopped, thereby dropping the temperature of damper, the thermo label still indicates the highest tem-
perature when engine was running.
1. Attach the thermo label to the damper outer circumference or front end near the outside diameter.
2. Record the highest temperature by checking the thermo label heat-sensitive area when engine is not running.Re-
cord the temperature periodically so that you can tell if there is any abnormal temperature change.
Note: (a) When the increase in thermo label temperature is observed, look for the abnormality of engine or other
causes. Then, replace the thermo label with new one, and check the temperature change again.
(b) If the temperature indication of thermo label comes close to the limit temperature of damper, or if there is
any abnormal temperature changes, contact your local dealer.
(c) For damper temperature limit, refer to "Damper - Inspect" (8-5).
Fig. 8-4 Damper Temperature Control
Table 8-2 Types of Thermo Labels
Parts name Part No.
Measurable
temperature
range
Thermo Label
100-120
32522-04211
(20 labels set:
32522-04200)
100 to 120°C
Thermo Label
75-95
32522-04111
(20 labels set:
32522-04100)
75 to 95°C
Thermo Label
50-70
32522-04311
(20 labels set:
32522-04300)
50 to 70°C
<5E-75>
75 80 85 90 95
<5E-100>
100 105 110 115 120
<5E-50>
50 55 60 65 70
Thermo Label
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