MCi MC8 Crusader - Pressure Setting

MAINTENANCE
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MC-8
[ c,c, _1~6-_27 ___ DATE ~Ju__,__.1 Y,~1_97_3 ~-l MANUAL
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5
18
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3
17
l.
End Plate
7.
11
0
11
Ring
13.
Link End - Engine End
2. End Bushing
8.
11
0
11
Ring
14.
Oil Seal
3. Piston
9. Snap Ring
15.
11
0
11
Ring
4.
Shaft
10.
Packing
16.
Lockwasher
5.
Cylinder Assy. 11. Felt Oiler
17.
Nut
6.
Spring 12.
Link End-Alternator
18.
Jam Nut
Figure 16-39: A/C Compressor Belt Tension
Air Cylinder Disassembled
A/C COMPRESSOR BELT TENSION
PRESSURE REGULATING VALVE
DESCRIPTION
A pressure regulating valve is installed at the rear
of the A/C compressor to provide belt tension and
prevent drive belt from slipping.
PRESSURE SETTING
To increase pressure setting, install an air gauge
between the pressure regulator and belt tightener air
cylinder. Loosen lock nut on regulator valve, turn
adjusting screw until air pressure reading on gauge is
95 psi. NOTE: Turn the 4 way air control valve to
"'off' and "on" position several times and check the
air gauge for 95 psi. setting. After proper reading is
accomplished, tighten lock nut at top of valve and
remove gauge and install air lines. Check lines for air
leaks.
CAUTION: Adjust pressure regulating valve by
turning screw clockwise to accomplish final 95 psi.
setting.
l. A/C Compressor Belt Tension
Pressure Regulating Valve
2. A/C Compressor Air Cylinder Tension
2-Way Control Valve