Suzuki Boulevard M50, Service Manual

Page: 151 / 454

SHAFT DRIVE 4-19
Shims
2
specifications
The shims
1
are available as a set (27327-34810).
EXAMPLE:
Final gear to case shims
1
; 1.45 mm + 1.40 mm = 2.85 mm
Final gear bearing to bearing case shims
2
,
0.35 mm + 0.60 mm = 0.95 mm
Original total measurement = 3.80 mm
Backlash too large:
Final gear to case shims
1
; 1.35 mm + 1.45 mm = 2.80 mm
Final gear bearing to bearing case shims
2
,
0.60 mm + 0.40 mm = 1.00 mm
Total thickness = 3.80 mm
Backlash too small:
Final gear to case shims
1
; 1.50 mm + 1.40 mm = 2.90 mm
Final gear bearing to bearing case shims
2
;
0.50 mm + 0.40 mm = 0.90 mm
Total thickness = 3.80 mm
TOOTH CONTACT
After backlash adjustment is carried out, the tooth contact must
be checked.
• Remove the bolts from the final gear bearing case, and
remove the case with the two 5 mm screws. (

4-15) Do not
misplace the shims. Remove the final driven bevel gear.
• Clean and de-grease several teeth on the final driven bevel
gear. Coat these teeth with machinist’s dye or paste, prefera-
bly of a light color.
• Re-install the final driven bevel gear with shims in place, posi-
tioning the coated teeth so that they are centered on the final
drive bevel gear.
• Re-install the final gear bearing case and bolts, and tighten to
specification.

Final gear case bolt: 23 N·m (2.3 kgf-m, 16.5 lb-ft)
• Using a socket and handle on the final drive bevel gear cou-
pling nut, rotate the final drive bevel gear several turns in
each direction, while loading the final driven bevel gear. This
will provide a contact pattern on the coated teeth of the driven
bevel gear.
Part No. Shim thickness
27327-34200 0.35 mm (0.014 in)
27327-34210 0.40 mm (0.016 in)
27327-34220 0.50 mm (0.020 in)
27327-34230 0.60 mm (0.024 in)
1
INCORRECT (Contact at tooth top)
2
CORRECT
SA
MP
LE