Figure 14-6. Evacuation Hookup
System Vacuum Temperature °F
27.99 100
COMPOUND GAUGE 28.89 80
READING IN INCHES 29.40 60
OF MERCURY VACUUM 29.71 40
29.82 20
29.88 0
NOTE
For each 1,000 feet of elevation above sea level, the compound gauge
reading will be about one inch lower, numerically.
The following steps should be of help when performing this operation.
a. Remove access panel at the rear of the cabin to gain access to the Schrader service valves.
CAUTION
Ascertain that all system pressure is released before attempting the
evacuation. (Refer to paragraph 14-5.)
Revised: 2/13/89
3A17
CHEROKEE ARROW III SERVICE MANUAL
ACCESSORIES AND UTILITIES
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