Key to symbols · 53 = Disc thickness,transmissionhousingside

911 Carrera (996) Final drive -Differential, differential lock Key to symbols 53 = Disc thickness,transmissionhousingside 54 = Disc thickness, retaining plate side 55 = Disc thickness between 4-point bearing and gearwheelfor 4th gear (combinationof two discs and deviationin the total disc thickness used of ::t:0.03 mm permissible) 52 = Disc thickness on small tapered roller bearing 51 = Disc thickness on large tapered roller bearing (crown wheel side) E = Installationdimension.Max. deviationfrom the installationdimensionengraved on the crown wheel: :to.04 mm. c = Distancefrom centre of differential/flat surface in recess of the transmissionhousing bearing bore d = Distancefrom centre of differential/flat surface of transmissionhousing f = Depth of the bearing opening in the retaining plate g = Bearingwidth of cylindrical-rollerbearing p = Bearingwidth of 4-pointbearing s = Rib width of 4-point bearing R = Position of gear set (always19.6 mm). Flat surface of transmissionhousingto right-handflat surface of the hub of the gear wheel for 4th gear T = Check dimension,gear set position = 41.575::t: 0.055 mm (onlyfor production). Al = Installationdimensionof pinion shaft \/,"I = Preload of main bearing assemblyon the tensioningplate side: 0.07 mm 39 08 15 Adjusting drive set -GT3 39 -217 Printed in Germany -29, 1999 GT339211