EAS - Revised Compressor/Diagphram Kit
14/2/95C845
SUBJECT:
Electronic Air Suspension (EAS) Service Action C845
MODEL:
Range Rover Classic
AFFECTED VEHICLES:
All EAS derivatives from LH 624756 to LH 654350
DETAIL
It has been found that under certain atmospheric conditions (high humidity followed by extreme cold temperatures) some EAS vehicles have suffered from a diaphragm valve freezing in the valve block. Likewise compressor design has been upgraded to enhance reliability in extreme cold climates.
In the interest of customer satisfaction, we have decided to notify Range Rover owners in Canada of a potential problem with the EAS system. The owners will be sent an advisory requesting them to make an appointment with their dealer to have certain EAS components updated. Refer to Service Bulletin G95-002.
Vehicles with EAS up to VIN 649520 require an updated compressor and Diaphragm kit (refer to parts information below).
Vehicles with EAS between VIN's 649521 and 654350 require Diaphragm Repair Kit only.
ACTION REQUIRED
Upon customer contact, complete procedure as detailed below.
PARTS INFORMATION
Diaphragm Repair Kit
STC 1803K
Compressors by Model Year (refer to procedure to identify correct compressor required)
1993 model year - ANR 1847 93
1994 model year - ANR 1847 94
1995 model year - ANR 1847 95
PROCEDURE
IT IS NOT RECOMMENDED THAT ALL PIPES BE DISCONNECTED AS DAMAGED TO THE PIPES MAY RESULT. CARE SHOULD ALSO BE TAKEN TO PREVENT DIRT FROM ENTERING THE SYSTEM.
1. Depressurize the EAS system as detailed in section 68 of the workshop manual.
2. Disconnect the compressor inlet pipe.
3. Detach the air supply assembly from the chassis and support the assembly to avoid straining air supply and electrical harnesses.
4. Remove the lid and inspection hatch to expose the valve block.
5. Disconnect the blue teflon pipe at the valve block end.
6. Disconnect pipes from ports 5, 7 and 9 sealing the ends of the pipes and open ports to prevent dirt ingress.
7. Disconnect the 13 way electrical plug and detach from its support tag.
8. Remove the 4 screws attaching the valve block to the air supply assembly and lift the valve block clear of the box. Place the air supply assembly on a work bench.
9. If compressor replacement is required per the above information, replace with correct part for model year. (see parts information above) Return the removed compressor as described in Service Bulletin G95-002.
10) Remove the four screws (6) securing the diaphragm block and remove from the main valve block body.(The main block should be maintained in its normal orientation to prevent dirt ingress) Take care to retain the small 'loose' spring (1).
11. Assemble repair kit as illustrated.
12. Fit new diaphragm (3) to the support ring (2), ensuring correct orientation, then place the sub-assembly into the diaphragm body (5).
13. Fit the new "0" ring (4) into the groove in the diaphragm body.
14. Hold the valve block with the pipes/ports uppermost and place the spring into the cavity.
15. Fit the diaphragm body to the valve block with the four new screws. Ensure that the spring is correctly placed and the support ring locates properly. Tighten the screws to 2.5 Nm.
16. Refit the assembly to the vehicle and test drive to verify system functionality.
NOTE:
SYSTEM CALIBRATION IS NOT NECESSARY AND SHOULD NOT BE CARRIED OUT.
17. Complete a Service Action Label. Clean an area on the hood locking panel just above the vehicle's emissions label (or another location close to this label). Firmly stick the Service Action label to the panel, and then cover with the clear plastic film as supplied. (see illustration)
WARRANTY:
COMP.CODE:
C845
SRO:
Claim type: M
Option 93, 94, or 95 - Fit compressor and diaphragm kit - 1.3 hours
Option 95A - Fit diaphragm kit only - 00.85 hour