Lotus TURBO ESPRIT Service Manual page 283

Page 30
SECTION
FB
Fig
.l
0 Measuring crown wheel backlash
(d)
Repeat the procedure on teeth a t about 90°,
1
80' and 270° around
the crown wheel from the first measurement. The difference between
any two measurements should not exceed 0.1 0 mm. I f a reading
exceeds
this
figure i t w i l l indicate the crown wheel is running out o f
true or i s badly fitted
.
(e)
Make
a
note o f the minimum clearance.
Example clearance = 0.73 mm
Adjust the backlash.
IMPORTANT: The clearance between the teeth i s adjusted by redistributing
the adjusting washers against the left-hand and right-hand
bearings. Under no circumstances must the overall thickness
o f the washers be altered, see DIFFERENTIAL BEARINGS
ADJUSTMENT.
The clearance must be adjusted towithin the limits
0
.I
6
mm and
0.24 mm. Aim for an average clearance o f 0,20 mm.
. .
. , .
Subtract
this
average clearance from the Ainimum reading noted; for
the example given, this w i l l be:
therefore, for
this
example the clearance must be reduced by
0.53
mm.
NOTE:
Moving a 0.15 mm adjusting washer from oneside to the
other, w i l l change the clearance by 0.1
0
mrn.