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Pelican Technical Article:

A/C Belt Replacement

Steve Vernon

Time:

30 minutes30 mins

Tab:

$12 to $20

Talent:

**

Tools:

13mm, 10mm socket

Applicable Models:

Porsche 993 Carrera (1995-98)
Porsche 993 Carrera 4 (1995-98)
Porsche 993 Carrera 4S (1996-98)
Porsche 993 Carrera S (1998)
Porsche 993 Targa (1996-98)
Porsche 993 Turbo (1996-97)

Parts Required:

Belt

Hot Tip:

Tilt the compressor forward to remove belt

Performance Gain:

Functioning AC

Complementary Modification:

Change engine air filter

On both the Varioram and non-Varioram Porsche 993s the A/C compressor is located on the rear right side of the engine. This article is not about how to service or repair the A/C system itself but on how to change the belt. The belt is driven off of the crank pulley and spins the clutch on the compressor. These belts, like any belt, will wear out over time. You should inspect all of your belts every six months for signs of drying out, glazing, cracking or separation and replace them at the first signs of deterioration.

There are three belts on the 993 engine that drive the A/C compressor, the alternator and the cooling fan. Whether you use your A/C system or not you will need to know how to replace the belt because it needs to come off to replace either of the other belts.

Over the years your car may have been serviced by multiple people including previous owners and this can lead to parts replaced with different size fasteners and hardware. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches. If something is different on your vehicle please let us know and share your info to help other users. If you have any questions or comments or even a different procedure you would like to share please leave it below and please leave your vehicle information.

On both the Varioram and non-Varioram Porsche 993s the A/C compressor is located on the rear right side of the engine.
Figure 1

On both the Varioram and non-Varioram Porsche 993s the A/C compressor is located on the rear right side of the engine.

There are three belts on the 993 engine that drive the A/C compressor (blue arrow), the alternator (red arrow) and the cooling fan (yellow arrow).
Figure 2

There are three belts on the 993 engine that drive the A/C compressor (blue arrow), the alternator (red arrow) and the cooling fan (yellow arrow). Whether you use your A/C system or not you will need to know how to replace the belt because it needs to come off to replace either of the other belts.

On the Varioram motors you will need to first loosen the 10mm bolt that holds the lines to the shroud (red arrow) and then move to the four 13mm bolts that hold the compressor in place (yellow arrow).
Figure 3

On the Varioram motors you will need to first loosen the 10mm bolt that holds the lines to the shroud (red arrow) and then move to the four 13mm bolts that hold the compressor in place (yellow arrow).

On the non-Varioram engines you release the plastic clip on the left side (red arrow) and then remove the 10mm blot holding the bracket on the right side (yellow arrow) holding the lines in place.
Figure 4

On the non-Varioram engines you release the plastic clip on the left side (red arrow) and then remove the 10mm blot holding the bracket on the right side (yellow arrow) holding the lines in place.

Loosen the four bolts holding the compressor on the Varioram engine and the five on the non-Varioram (red arrows).
Figure 5

Loosen the four bolts holding the compressor on the Varioram engine and the five on the non-Varioram (red arrows). You can just loosen them right now; if you remove the bolts make sure to hold the square nuts on the underside so they don't drop into the engine compartment.

There is a 13mm tensioning bolt and locking nut on the lower right side of the compressor (red arrow), loosen this bolt.
Figure 6

There is a 13mm tensioning bolt and locking nut on the lower right side of the compressor (red arrow), loosen this bolt. Try sliding the compressor towards the fan and removing the belt.

If you cannot get the belt off the compressor remove the bolts that hold it in place making sure to hold the square nuts on the bottom of the bolts (red arrow).
Figure 7

If you cannot get the belt off the compressor remove the bolts that hold it in place making sure to hold the square nuts on the bottom of the bolts (red arrow).

With the bolts removed you can tilt the compressor forward and towards the center of the vehicle then slip the belt off the compressor first and then the crank pulley.
Figure 8

With the bolts removed you can tilt the compressor forward and towards the center of the vehicle then slip the belt off the compressor first and then the crank pulley.

You can now work the belt off from around the crank pulley and remove it.
Figure 9

You can now work the belt off from around the crank pulley and remove it. Installation is the reverse of removal. When installing the new belt use the 13mm tensioning bolt and tension the belt until there is a 5mm deflection at the midway point using finger pressure.

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Comments and Suggestions:
ron Comments: I just wrote you about the A/C compressor problem I have but I did not give you my complete email address. Here it is.
May 28, 2017
  Followup from the Pelican Staff: No schematic, but the tensioner is a threaded bolt on the bracket. Try backing it out. - Nick at Pelican Parts  
ron Comments: I removed the A/C compressor belt as you described by removing the 4 bolts holding the compressor and I put a new belt on. Now, I cannot put the compressor back on. Something under the compressor is preventing me from putting it back on. Do you have a schematic of the tensioning mechanism? I think it is what prevents me from being able to reinstall the compressor.
Thank you.
May 28, 2017
  Followup from the Pelican Staff: Answered under the other post. - Nick at Pelican Parts  

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Page last updated: Mon 7/24/2017 03:23:41 AM