Porsche 993 Parts

How exactly to substitute your V- gear
Changes produced by Robin on Summer, 2000 including pictures.

Difficulty scale (10 being toughest): 6

Tools required: Adjustable wrench (or 24mm or 15/16" open-end wrench)
Unique Porsche 12 point allen tool part#999 571 052 02:
13mm plug & wrench
3 to 6 inches expansion
5mm hex bit
4mm allen key or hex little bit (96+ makes use of a 8mm plug)

Total belts listing: (from Porsche components catalog)

(1) focus on the A/C buckle. Loosen A/C bracket with 4mm allen secret. For 96+ 993s the A/C bracket makes use of a 8mm bolt. While making certain the lines can move right back & forth freely.

(2) on right side of A/C compressor ahead of loosen the adjuster securing bolt with 13mm wrench use a 13mm wrench turn the stress modification bolt several turns first and thenloosen adjustment bolt lock fan with the wrench. Go to loosen the tension modification bolt limited more turns.

(3) making use of 13mm plug with extension to loosen the 2 bolts under the A/C lines (a person is quick, a person is extended). Remove the other three bolts that hold-down the compressor. Be careful not to lose the square nuts, place yours hand underneath the square buts to avoid them from dropping. Lift the compressor off its base simply few cm toward on center of the automobile once all the installing bolts were eliminated. Carry the belt from the pulley very first, after that pull it well the crank pulley.

(4) with the Porsche unique tool# 999 571 052 02 and a 24mm wrench to loosen the alternator shaft bolt. The unique tool holds the shaft in place to stop it from rotating even though you break the nut free.
Eliminate the fan, shim (if any), exterior spacer, and outer pulley half. Slide belt in your direction & remove from crank pulley. If you can find any shims in-between the pulley halves, remove them (but keep in mind exactly how many there are). Pull inner pulley half and inner spacer down. You can expect to will have accessibility fan pulley. Before the start of this process it really is a recommended tip from John D II (NH) to put a rag under neath the pulley workshop to stop any bolts and components dropped into the base.

(5) eliminate the three bolts with a 5mm hex little bit and ratchet. Do not use allen tips as heads can remove quite easily. Spray some penetrant on bolts to greatly help loosen them up. A trick to-do to prevent the 5 mm allen nuts from stripping would be to break the nut loose by hitting the ratchet handle with a difficult jolt. After getting rid of them make note of just how many shims are on the exterior of this pulley together with small white loss (the white tabs only is present on 95 993s). The outer pulley 1 / 2 and shims have actually a little index hole your white tab meets through. You need to line all of it up whenever putting in. Pull the external pulley half down. To get the buckle off slide the wheel sensor left.

(6) prepare to set up the new devices.

(7) Install fan belt to crank pulley and center top component over alternator shaft. (If buckle never fit easily in to the crank pulley, utilize an long item like a long 3/8" extension to press the gear into the crank pulley.) Be sure to carry up the lover gear follower to prevent breaking it. Line up white loss with holes and slide exterior lover pulley & shims on to the alternator shaft so far as it'll go. Thread all three bolts manually. To tighten up the pulley squeeze the gear in the midpoint between the crank & fan pulleys. Tighten each bolt somewhat, and repeat several times until bolts are tight w/o crunching the belt. You can line it by pulling the gear in any event once or twice. Usually do not force the bolts tight. Use finesse. If the bolts tend to be tightened up crank the starter two or three times to get the gear to sit precisely (do not begin the motor). Look at the stress of this belt. If it is too loose or too tight, incorporate shims (to loosen) or eliminate shims (to tighten).

(8) For the alternator pulley the factory has an updated system to stop premature wear for the buckle. The brand new component into the TSB can also be placed in the bulletin therefore choose all of them up also (about $1.50 each). Shims are widely used to adjust the belt stress. The overall principle to remember is: less is much more (less shims is much more stress) and vice versa. If you look at the photos the more recent pulleys are larger in diameter, have a slightly less bend, and also have the spacers integrated. Erase the old pulleys and spacers.