BSA D14/4 BANTAM SUPREME D14/4 BANTAM SPORTS, Workshop Manual

Page: 39 / 120

D14/4 ENGINE B13
FIG. B13. Parting the flywheels.
Position the second flywheel over the crankpin and,
using one of the stripping bars as shown in Fig. B14,
press the flywheel on to the crankpin.
The flywheel assembly must now be aligned within
the necessary limits. Two of the actual or similar
bearings used in the engine should be fitted to the
shafts and the assembly mounted in vee-blocks as
shown in Fig. B15. Using a dial micrometer, measure
the accuracy of the assembly. Any necessary should
be made by the careful use of a mallet or lead hammer.
The wheels should be brought within the limit of ·004"
on the rims, ·006" on the inner faces and a maximum
of ·002" on the shafts.
FIG. B14. Reassembling the flywheels.
FIG. B15.
Checking the flywheel assembly.