Honda BF135A Manual page 549

c. REVERSE BEVEL GEAR SHIM
1) Measure the bearing height (distance H) of the new 50 x 90
x 20 mm radial ball bearing as shown, and record the
measurement.
2) Determine the calculation value using the bearing height
(distance H) and the following formula.
Formula:
Bearing height (distance H) – 20 = Calculation value
Example:
When, bearing height (distance H) is 19.95 mm (0.785 in):
19.95 – 20 = –0.05
Therefore, the calculation value is –0.05 mm (–0.002 in).
3) Cross reference the calculation value and the engagement
mark located on the trim tab installation part of the gear
case, and select the shim of the appropriate thickness from
the shim selection table accordingly.
• Shim type table
[1] Shim type
[3] Forward bevel gear shim A
[4] Forward bevel gear shim B
[5] Forward bevel gear shim C
[6] Forward bevel gear shim D
• Reverse bevel gear shim selection table
–0.05 (–0.002)
1
2
3
4
5
6
Refer to page 14-80 for the information on how to read the
shim selection table and shim combination.
14-82
[2] Thickness
0.10 mm (0.004 in)
0.15 mm (0.006 in)
0.30 mm (0.012 in)
0.50 mm (0.020 in)
[3] Unit: mm (in)
[2] Calculation value
±0 (±0.000) –0.05 (–0.002)
–
–0.12 (–0.005)
0.60 (0.024) 0.65 (0.026)
0.55 (0.022) 0.60 (0.024)
0.50 (0.020) 0.55 (0.022)
0.45 (0.018) 0.50 (0.020)
0.40 (0.016) 0.45 (0.018)
0.35 (0.014) 0.40 (0.016)
[2]
ENGAGEMENT
MARK
–
[1]
GEAR CASE