A/C - Knocking Noises At Idle

Model: Sorento [BL]

Group: Heating, Ventilation and Air Conditioning(71)

Number: KT2007071901

Date: Wednesday, November 05, 2008

Area: N. America

Subject:
Sorento Compressor Disc & Hub Replacement
(Climate Control - 011 - REVISED)

Description





This revised bulletin replaces information published on 7/19/2007, Climate Control 011. It readdresses some 2007 - 2008 Sorento (BL) that may exhibit a knocking noise (mainly at idle) during A/C operation. A new redesigned A/C compressor Disc & Hub with better dampening characteristics can be retrofitted to these vehicles A/C compressors to eliminate the concern. This new design Disc & Hub assembly can be applied to any 2007 - 2008 Sorento (BL) manufactured before January 30, 2008 that exhibits this concern and hasn't had the current new redesigned Disc & Hub installed.

Please note that there are two (2) redesigned Disc & Hub assemblies, the first of which is no longer supplied. In some cases KMA has found that the first redesign did not effectively address all customer concerns. The current redesigned Disc & Hub should be used in these cases, even if the first redesigned Disc & Hub had been tried.

As of 7/17/2008, only the current redesigned Disc & Hub is being shipped from all Parts Distribution Centers. The part number has not changed between the first and current redesigned Disc & Hub. To order the current redesign Disc & Hub, use P/N: 97644 4D900FFF.

Effective Vehicle Information

2007-2008 Sorento vehicles produced through January 30, 2008.





Parts Information

Service Procedure

Repair Procedure





1. Open hood and locate the A/C compressor disc + hub assembly.





2. Use SST number 09977-29000 to hold the disc + hub assembly.





3. Remove clutch hub retaining bolt.

!WARNING
Do NOT use power tools when removing or installing the disc + hub assembly bolt! Bolt is easily broken off if not properly removed and reinstalled!





4. Remove the disc + hub assembly by sliding it off the compressor shaft. No Special Tool or puller is required.

!WARNING
An adjustment shim that is responsible for disc + hub to drive pulley clearance may stick to the end of the compressors shaft, stay inside the original hub assembly, or fall to the floor!





5. Transfer the original disc + hub clearance adjustment shim to the new redesigned disc + hub assembly.





6. Reinstall the new redesigned disc + hub assembly. Lightly tighten the assembly bolt using hand tools and SST 09977-29000. Finish tightening using a torque wrench set to 7.2 ~ 10.8 lb-ft (86.4 to 129.6 lb-in). Remove clutch hub tool.

!WARNING
Do NOT use power tools when installing the disc + hub assembly bolt! Bolt is easily broken off if not properly tightened to specification.

7. Start the engine with the A/C off. Check that the newly installed disc + hub assembly does not rub or drag on the compressor pulley. If drag occurs, the shim was not transferred properly.

8. Turn ON the A/C and check that the disc + hub assembly engages the compressor pulley without slipping. If slipping occurs, inspect the shim location and proper clutch hub installation.

9. Close Hood, repair is complete.





WARRANTY INFORMATION: