Cub Cadet 8454 Service Manual page 330

CHAPTER 9 8454
4) The compressor does not revolve or hard to revolve.
Causes
1. Loosening of belt
2. Internal failure of compressor
3. Relation of magnetic clutch
3-1. Drop of battery voltage
3-2. Layer shot of coil
3-3. Oil invasion to the surface of
clutch
C. TROUBLE SHOOTING BY GAUGE
PRESSURE
CONNECTION OF MANIFOLD GAUGE
: Exhaust the air by loosening the nut.
1. Connect the manifold gauge to the high/low pres-
sure connection section of the compressor.
2. Exhaust the air in the charging hose from the con-
tacting side of manifold gauge.
* Condition
Ambient temperature: 30 ~ 35°C (86 ~ 95°F)
Revolution of engine: 150 rpm
Blower: HI (Maximum revolution)
Thermo. switch: Colder
* Reference
Low pressure side
High pressure side
a. Not Cool
1. Lack of refrigerant charging
Status: Not cool
Phenomena:
- The pressure of high /low pressure side is low.
- The bubble in sight glass is seen.
- Discharging temperature does not fall down.
Cause: Refrigerant leakage
Action: Check with gas leakage detector and repair
the leaked part and supplement the proper amount.
Low lack of refriger-
ant charging
High lack of refriger-
ant charging
9-16
K&T Saw Shop 606-678-9623 or 606-561-4983
www.mymowerparts.com
Checking Methods
The vibration of belt is large.
The belt is sliding.
Sliding when revolving
Sliding when revolving
Sliding caused by the contamina-
tion around the magnetic clutch
1.5 ~ 2.0 kgf/cm 2
21.3 ~ 28.4 psi
1.5 ~ 2.0 kgf/cm 2
21.3 ~ 28.4 psi
2
1 kgf/cm
14.2 psi
8 ~ 9 kgf/cm 2
113.8 ~ 128.0 psi
Action
Tension adjustment
Repair/replacement
Battery charging
Replacement of magnetic clutch
Replacement or cleaning the
surface of clutch.
D569-W02 May-2003
569W919A
569W920A