993 V Belts and Temperature

[ErVikingo]

Gents,

My brothers C2S broke the VBelt after only 10K miles, he just replaced it but told me that the alternator shaft end (the nut that holds the pulley half) gets awfully hot.

FYI, belt was replaced after the fan broke due to a problem with an alternator bearing or bushing which was duly repaired and a new fan installed.

Belt deflection with the new belt is at 1/4" (per spec which is 1/4 inches).

Is this high temperature normal?

I wonder if there is a problem which would perhaps explain the premature failure.

TIA, Juan

[ron in sc]

Maybe that is the problem.

Alternator - Belt Failure or Belt Noises
911
7/97a
1378
02/05/98
This Bulletin replaces bulletin, Group 1, # 7/97, dated 7-10-97.
New Alternator Pulley and Belt
Vehicle Type:
911 Carrera as of M.Y. 1995 and 911 Turbo as of M.Y. 1996
Model Year:
As of 1995 (S)
Concern:
In case of alternator belt failure or belt noises in conjunction with pulley, part number, 993 106 268 00 (s/s to 993 106 268 01), the alternator belt and pulley must be replaced.
Information:
911 Turbo:
When repairs are necessary, install only the new version belt and pulley halves.
Description Part Number

New belt (1 ea.) 999 192 372 50 (757 mm long)
Pulley halves (2 ea.) 993 106 268 01 (Yellow, chromated color) *
Shim (0.5 mm) 964 106 268 31 (as required)
Shim (0.7 mm) 964 106 268 32 (as required)
* The ratio of 2.68 to 1 remains unchanged.

911 Carrera:
The new version pulleys can also be installed on the 911 Carrera. However, the previous version belt must be used.
Description Part Number

Previous belt (1 ea.) 999 192 343 50 (760 mm long)


When installing the new version pulley halves on the 911 Carrera and Turbo, the distance spacer, (see arrow, illustration) is machined as part of the new version pulley and is no longer required. Because of this, it is no longer possible to store adjustment shims behind the distance spacer on the outside of the alternator pulley. Shims removed during the tensioning procedure should be stored in the vehicle tool kit. The tensioning procedure can be found in Repair Group 13, page 13-32.

[kang]

.

[ErVikingo]

THANKS, we'll look into that !