MacDon M1170 - Cleaning Air Conditioning (A;C) Evaporator Core

214733 355 Revision A
Cleaning Air Conditioning (A/C) Evaporator Core
WARNING
To avoid cuts from evaporator fins, do NOT use bare hands to brush away clogs.
1. Remove the A/C cover. Refer to Removing Air Conditioning (A/C) Cover, page 354.
1008601
B
B
A
A
Figure 5.153: A/C Evaporator Core
2. Use a vacuum cleaner or compressed air to remove dirt
from inside the housing.
3. Blow compressed air through the evaporator fins from the
blower side (A) first as shown. Direct the air straight into
the evaporator to prevent fin damage. A nozzle extension
makes this procedure easier.
4. Repeat the previous step from the side (B) opposite the
blowers.
1009960
A
B
C
C
Figure 5.154: A/C Evaporator Core
5. If you can’t feel the compressed air blowing through the
evaporator core, proceed as follows:
a. Protect the blower motor (A) from water.
b. Soak the evaporator core (B) with warm water using a
low pressure hose. Let soak for several minutes.
c. Blow compressed air through the core from the blower
side (C).
d. Repeat the soaking procedure until air blows through
the evaporator freely.
MAINTENANCE AND SERVICING