Mitsubishi Montero 1987 Service Manual Page 276

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24-40
AIR-CONDITIONING-Service Adjustment Procedures
Nut
I Union
20110267
Tension pulley
IOON
(22 Ibs.1 Compressor
Crankshaft
pulley
I
2OY907
1
O-RING INSTALLATION
(1) Clean sealing surface.
(2) Make sure O-ring does not have any scratches.
(3) Connect fitting, install fastener, and torque to amount shown
in illustration.
The internal part of the refrigeration system will remain in a state
of chemical stability as long as pure-moisture-free R-l 2 and refrig-
erant oil is used. Abnormal amounts of dirt, moisture or air can
upset the chemical stability and cause operational troubles or even
serious damage if present in more than minute quantities.
When it is necessary to open the refrigeration system, have eve-
rything you will need to service the system ready so the system
will not be left open any longer than necessary. Cap or plug all
lines and fittings as soon as they are opened to prevent the en-
trance of dirt and moisture. All lines and components in parts stock
should be capped or sealed until they are ready to be used.
All tools, including the refrigerant dispensing manifold, the gauge
set manifold and test hoses should be kept clean and dry.
COMPRESSOR DRIVE BELT ADJUSTMENT
N24FJAE
Satisfactory performance of the air-conditioning system is depen-
dent upon drive belt condition and tension. If the proper tensions
are not maintained, belt slippage will greatly reduce air- condition-
ing performance and drive belt life. To avoid such adverse effects,
the following service procedure should be followed:
(1) Any belt that has operated for a minimum of one half-hour is
considered to be a “used” belt. Adjust air- conditioning drive
belt at the time of new-car preparation.
(2) Check drive belt tension at regular service intervals and adjust
as needed.
Standard value :
17-20 mm (.67-.78 in.)
1 STB Revision
-7
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