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SERVICE INSPECTIONS
Heating, Ventilation and Air Conditioning Inspections
How to Make Sure Your
A/C Beats the Heat
Summer's hot and muggy days can become
down right comfortable with a well-maintained
cab air conditioning system. Here are some
ways to help your A/C system keep you cool.
n
Check the drive belt. Verify proper tension
and check for signs of wear.
n
Clean the condenser. It's often integrated
with the radiator and the oil cooler. All
should be free of any debris that can build
up between units. Use compressed air or
a power washer to remove dust between
condenser fins that can reduce cooling
efficiency.
n
Inspect the compressor and hoses. Oil seepage
from the compressor, hoses, connectors or
couplings can be a potential problem. Contact
your New Holland dealer for suggested repair
options if you detect leakage.
n
Keep cab filters clean. Frequently clean both
the fresh air and recirculating air filters.
n
Check the evaporator drain hose. Don't let
water collect in the evaporator box. Make
sure the drain hose is unobstructed.
n
Keep the cab airflow high. Especially in
high humidity, holding the cab's fan speed
higher will reduce the likelihood of the
evaporator core freezing. For non Automatic
Temperature Control (ATC) systems, you
should change cab temperature by adjusting
the temperature setting before decreasing the
fan speed.
n
Don't repair air conditioning systems
yourself. Clean Air Act legislation requires
that air conditioning systems be serviced
only by personnel certified in refrigerant
recovery and recycling.
Checklist
S S S S y y y y s s s s t t t t e e e e m m m m T T T T y y y y p p p p e e e e
____1. HFC134a
____2. R12
____3. Retrofitted
T T T T r r r r o o o o u u u u b b b b l l l l e e e e s s s s h h h h o o o o o o o o t t t t i i i i n n n n g g g g S S S S y y y y s s s s t t t t e e e e m m m m
____1. No Heat
____2. Poor Heat
____3. No Air Conditioning
____4. Poor Air Conditioning
____5. No Defrost
____6. Air From the Wrong Outlets
____7. No Temperature Control
____8. Improper Blower Control
____9. Interior Noise
____10. Exterior Noise
____11. Interior Leak
____12. Exterior Leak
____13. Odor
____14. Error Codes (if applicable)
____15. Other
W W W W h h h h e e e e n n n n D D D D o o o o e e e e s s s s S S S S y y y y m m m m p p p p t t t t o o o o m m m m O O O O c c c c c c c c u u u u r r r r
____1. Always
____2. Sometimes
____3. When Hot
____4. When Cold
____5. Battery Voltage
____6. When Engine Is Started
____7. When Engine Is Warming Up
____8. When Idling
____9. At High Engine RPM
____10. During Acceleration
____11. While In Motion
____12. Other
New Holland dealers offer air conditioning
maintenance inspections and a full line of
compressors, condensers, and other air conditioning
parts to fit your exact need. Use these services and
parts to help keep your air conditioning performing
at its peak.
C C C C o o o o m m m m p p p p o o o o n n n n e e e e n n n n t t t t
O O O O K K K K A A A A d d d d j j j j u u u u s s s s t t t t
1. Compressor
(leakage, alignment, noise)
2. Compressor Clutch
(field, coil, bearing, air gap)
3. Compressor Belt (condition tension) m
4. Condenser
(clear of dust, debris, and leaks)
5. Receiver Dryer
6. A/C Hoses
a. Suction
b. Discharge
c. Condenser to Dryer
d. Chassis Liquid
e. Cab Suction
f. Cab Liquid
7. A/C Pressure Switches
a. Low Pressure Switch
b. High Pressure Switch
8. Evaporator Box
9. Evaporator Seals
10. Evaporator Capillary Tube
11. Evaporator Condensate Drain Tube m
12. Odor
13. Thermostat Expansion Valve m
14. Thermostat Switch
15. Heater Control Valve
16. Heater Hoses and Clamps
17. Air Filters
a. Fresh
b. Recirculation
18. Cab Blower
19. A/C Fluorescent Dye
20. Refrigerant Charge
21. Clean and Flush System
R R R R e e e e p p p p l l l l a a a a c c c c e e e e / / / /
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