Suzuki Boulevard M50, Service Manual

Page: 150 / 454

4-18 SHAFT DRIVE
BACKLASH
After assembling the final gear case, measure the final bevel
gear backlash as follows.
• Install the backlash measuring tool on the drive bevel gear
coupling, and set-up a dial gauge as shown in photo.

09924-34510: Backlash measuring tool (27 – 50 mm)
09900-20607: Dial gauge (1/100 mm, 10 mm)
09900-20701: Magnetic stand
• Adjust the dial gauge so that it touches the backlash measur-
ing tool arm at the mark; hold the final driven bevel gear
securely, and turn the final drive bevel gear coupling slightly in
each direction, reading the total backlash on the dial gauge.

Final bevel gear backlash
Standard: 0.03 – 0.64 mm (0.001 – 0.025 in)
If the backlash is not within the specification, adjust the shim
thickness as follows:
• Remove shims from final gear bearing case and final gear
case, and measure total thickness.
• In order not to change the clearance between final driven
bevel gear and bearing, the total thickness of the shims
installed after a change is made must equal the original total
thickness of shims.
• If backlash is too large:
a) Install a thinner shim pack
1
between final driven bevel
gear and final gear case.
b) Increase thickness of shims
2
between final driven bevel
gear bearing and bearing case by an amount equal to
decrease above.
• If backlash is too small:
a) Install a thicker shim pack
1
between final driven bevel
gear and final gear case.
b) Decrease thickness of shims
2
between final driven gear
bearing and bearing case by an amount equal to increase
above.
Shims
1
specifications
The shims
1
are available as a set {27326-34810 (1.40 –
1.50), 27326-34820 (1.05 – 1.35)}.
Part No. Shim thickness
27326-34201 1.05 mm (0.041 in)
27326-34211 1.10 mm (0.043 in)
27326-34221 1.20 mm (0.047 in)
27326-34231 1.25 mm (0.049 in)
27326-34241 1.35 mm (0.053 in)
27326-34201-140 1.40 mm (0.055 in)
27326-34201-145 1.45 mm (0.057 in)
27326-34201-150 1.50 mm (0.059 in)
SA
MP
LE