Page 36 - Vauxhall 20-60 H.P. (R Type) Chassis Shop Manual
P. 36

VAUXHALL 20-60 SHOP MANUAL

                         when carrying out this operation, one bolt at a time being removed and
                         replaced by a hot rivet, which should be quickly snapped into position
                         with a minimum amount of force, care having been taken to provide a
                         suitable dolly and snap beforehand.

                         NOTE— Whenever it is necessary to fit a new crown wheel, a new
                         bevel pinion should also be fitted if a quiet axle is to result.

                         DIFFERENTIAL  GEAR —

                         TO REPLACE AND ADJUST
                         ( See Figure 5 )

         SECTION         To replace, reverse the operations given for removal ( Section 108 ). The
             111         crown wheel is adjusted into mesh with the bevel pinion by means of screwed
                         sleeves  ‘B’  housed  in  the  differential  carrier.  To  make  the  adjustment,
                         remove the rivets holding the locking plates in position and take away the
                         locking plates. Slacken off the adjusting sleeve towards which it is desired
                         to move the crown wheel and screw in the opposing sleeve a corresponding
                         amount. Repeat this operation until the correct meshing of the teeth is
                         obtained. See that both sleeves are screwed right home and finally replace
                         the locking plates and rivets.

                         The crown wheel should be adjusted into mesh with the bevel pinion until
                                                       .
                                               .
                         there is a back lash of  003” to  006” between the teeth. This will be found
                         to give the most satisfactory results.

                         AXLE — TO REMOVE

         SECTION         Wedge the front wheels and lift the rear of the car by means of suitable
             112         lifting tackle 112 sufficiently high to permit the rear axle to be withdrawn
                         complete with road wheels.

                         Take the weight of the axle on jacks, unpin the brake connections and
                         remove the four bolts clamping the axle to each rear spring. Remove rear
                         shackles and lower the springs. The jacks can now be removed and the axle
                         withdrawn complete with the propeller shaft. It is unnecessary to disconnect
                         either of the propeller shaft couplings for this operation, because the shaft
                         will slide out of the splines at the forward end as the axle is withdrawn.

                         BEVEL PINION — TO REMOVE

                         ( See Figure 5 )

         SECTION         – Remove axle ( Section 112 ) .
             113         – Remove propeller shaft and rear fabric coupling from axle.

                         – Remove the split pin and castellated nut, ‘H’ from the end of the bevel
                            pinion shaft; take off the propeller shaft balancing drum and draw off
                            the coupling spider from the pinion shaft by means of a suitable drag.
                         – Remove the pinch bolt  ‘J’, and bevel pinion adjustment locking plate
                            located at the side of the bevel pinion housing, also remove triangular

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