MCi MC8 Crusader - Page 412

MAINTENANCE
\.ccusaaer
MC-8
[
""'
16-~37__
DATE_July,
1973 ] .
MANUAL
~-------------------~
TROUBLESHOOTING
(Cont'd)
TROUBLE
CAUSE
No
Flow
Of
Refrigerant
Through
Expansion
Valve
Dehydrator
strainer
is
clogged.
Remote
bulb
has
lost
charge
or
expansion
valve
is
defective.
Expansion
Valve
Hisses. Bubbles in
Moisture
&
liquid
Indicator
Gas
in
liquid
line.
Add
refrigerant.
Loss
of
Capacity
Superheat
Too
High
Clogged
dehydrator.
Obstructed
or
defective
expansion
valve.
Reset
superheat
adjustment.
Check
for
clogged
external
equalizer
line,
or
dehydrator.
TEST
EQUIPMENT
The
following
Air
Conditioning
Test
Equipment
Kit
is
recommended
for
routine
servicing
of
the
Air
Conditioning
system.
Qty.
1
1
1
3
1
Part
No.
l
6C-2-92
l
6C-2-93
l
6C-2-94
I6C-2-95
I
6C-2-96
l
6C-2-97
l
6C-2-98
N.P.N.
N.P.N.
N.P.N.
l
6C-2-99
Description
Air
Conditioning
Test
Equipment
Kit -
consisting
of
following
Halide
Leak
Detector
(Bernz-o-matic
Model
TX-12)
Freon
12-(35
ib.
Tank)
Charging
Hoses-(Yellow
Jacket
Hoses)
(HCL-36)
parts:
Pressure
Gauge-0-400
lbs.
with
R 12
& R
22
Temperature
scales
(No.
I
72
CA
2- I
/2")
Compound
Gauge-0-30"
Vac.
0-150
lbs.
with
R
12 &
R
22
Temperature
scales
(No
174
CA
2-1
/2")
Gauge
Manifold-with
handwheels
(877
J)
Socket-3/8"
Drive-Suction
Valves
(3/8
8-pt.)
Socket-3/8"
Drive-Discharge
Valves
(5/16
8-pt.)
Socket-3/8"
Drive-Receiver
Tank
Valve
(I
/4"
8-pt.)
Thermometer-(Mechanical)
to
check
Superheat
-I
0°
to
+
I
00"
(21400
I)
The
above
parts
are
available
from
Motor
Coach
Industries.
Service
Parts
Division.