LI83.30-N-055607

Air conditioning inoperative
Topic number
LI83.30-N-055607
Version
1
Design group
83.30 Air conditioning
Date
02-21-2013
Validity
Model 906
Reason for change
Model 639 restricted and part number of A/C parts kit added
Reason for block
Complaint:
Air conditioning inoperative.
Cause:
•
•
•
Refrigerant circuit clogged
Refrigerant in refrigerant circuit below minimum
Refrigerant compressor blocked or torque limiter blocked
Remedy:
1. Check whether the refrigerant circuit is clogged..
Note: In order to find clogged components, feel along the A/C lines and check whether there are any areas with major
temperature differences. Temperature differences are an indication of possible clogging.
2. Replace clogged components.
3. Determine refrigerant quantity in refrigerant circuit.
Note: If there are black particles (photo 1) in the refrigerant, replace all components in the refrigeration circuit. On model 639 with engine 646 and without code (HZ7) Regulated air conditioning (Tempmatic) in passenger compartment,
the air conditioning parts kit (see parts list) can be used for this.
4. If the refrigerant level in the refrigerant circuit is too low (refrigerant below 80% of standardized filling quantity), perform a leak test. Then refill and check the system.
5. Check whether the limiter is damaged.
6. If the limiter is damaged, remove the belt pulley and check the shaft of the refrigerant compressor for unrestricted
movement.
7. If the movement is not restricted, replace the belt pulley.
Note:
If the limiter breaks again while the shaft movement is not restricted, as well as replacing the belt pulley/refrigerant
compressor, also replace the tensioner pulley of the tensioning device, all guide pulleys for the poly-V belt and the
belt pulley of the alternator.
8. If the movement is blocked, replace the refrigerant compressor.
Note: Further assistance can be obtained from the "Technology Guide - Vehicle Climate Control" !!!
Attachments
File
Designation
1.jpg
Black particles in oil
Symptoms
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Body / Air conditioning / Air conditioning / Insufficient cooling output
Body / Air conditioning / Air conditioning / Temperature differences
Parts
Part number
ES1 ES2 Designation
A0002342512
Quantity Note
Belt pulley
1
EPC Other
make
part
For engines 646, 272
Technology Guide – Vehicle
Climate Control
X
The "Technology Guide –
Vehicle Climate Control"
is available in PDF format
in SDmedia via DAS or Intranet (http://s00hud37.destr.corpintra.net/sdmedia/
(S(qqphx5mmkjpmxc55y5w3fe45)
)/htm/aktuelles_release.html).
A0002342612
Belt pulley
1
For engine 642
A 001 230 32 11
HH9 Compressor
1
X
A 001 230 71 11
HH9+HH5 Compressor
1
X
A 001 230 71 11
H08+HH4 Compressor
1
X
A 642 150 06 60
Alternator Pulley
1
X
A 642 202 03 10
Belt Tensioner Pulley
1
X
X
X
Work units
Op. no.
Operation text
Time
Damage
code
Note
83421 53
Insufficient effect/power from refrigerant compressor
WIS-References
Document number
Title
Note
Allocation
AR83.30-D-1760D
Empty/evacuate/refill air
conditioning system and
check for proper operation
and leaks
Model 906
Remedy
AR83.55-D-5300NG
Remove/install refrigerant
compressor
Model 906 with engine 271
Remedy
AR83.55-D-5300US
Remove/install refrigerant
compressor
Model 906 with engine 272, Remedy
642, 651 with CODE (HH9)
Regulated air conditioning,
(Tempmatic)
AR83.55-D-5300WE
Remove/install refrigerant
compressor
Model 906 with engine 642 Remedy
or 651 with CODE (H08)
High-performance air condi-
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tioning system with 2nd refrigerant compressor
Validity
Vehicle
Engine
Transmission
Sprinter III
*
*
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