Rear Brake Disassembly; Rear Brake Inspection; Rear Brake Reassembly; Measuring Brake Pivot Pipe Diameter - Honda C50 Shop Manual

60
Ve r nier ca l iper
Figure 4- 36. M easuring brake pivot pipe diameter
Figure 4- 37. Install ing step bar
4. FRAME
pipe
o. Disassembly
Ill
Remove the exhaust pipe and the muffler.
(2)
Remove the brake r od from the brake arm by
loosening the brake adjusting nut, then remo ve
the brake pedal spring and the mai n stand spring.
131
Place a suitable sta nd under the engine and
remove the rear brake pivot pipe by removing
the 8 mm hex. nut fixing the rear brake pivot
pipe, and the
3
mm cott er pin; a nd by pulling out
the rear brake pivot pipe, the stand and brake
pedal can be removed from t he f rame as a unit.
(Fig.
4-35)
141
Remove the step bar fro m the crankcase by re-
moving the
8
mm hex. bolts.
b. Inspection
Ill
Inspect the brake pedal spring, main stand sp ring
and the rear brake rod spring for loss of tension
and corrosion. If loss of tension or cor rosion
is excessive, the spring should be replaced.
1 21
Inspect the brake pivot pipe and brake peda l
for looseness. If excessive ly loose, t he part
should be adjusted to conform wi t h the standard
or replaced. (Fig.
4-36)
131
Check t he rea r b rake pivot pipe outside diameter.:
16.8
mm
-0.02 (0.662 + 0.0008
in )
-0.1 0 - 0.0040
141
Check the b rake pedal pivot inside diameter.
16.8
mm
+ 0.027 (0.662 + 0.001 06
in)
- 0 -0
151
Check the stand pivo t hole inside diameter.
16.9
mm
+ 0.2 ( 0.665 + 0.008
in )
-0 - 0
1 61
Check the main stand spri ng fre e length .
Standard value-->
80
mm
1 3.150
in)
Serviceable limit-->Replace if over
88
mm
1 3.465
i nl
(7)
Check the cotter pin fo r damage.
1 81
Ch eck the b rake shoes fo r damages.
191
Adjust the b rake pedal play to
2-3
em
1 0.787 -1.181
in)
1101
Check the main sta nd, brake ·pedal a nd step bar
for deformiti es a nd r epai r as necessary · or
replace wi th new parts.
c. Reassembly
Ill Clean the pads a nd lubri cate the shafts with
grease befo re reassemb ly.
Rei nstall the rea r brake pivot pipe into the brake
pedal a nd reinstall the sta nd on the frame and
flx th e sta nd in place w it h th e r ear brake pivo t
pipe.
(Note)
Lock the r ear b rake pivot pi pe i n place with
8 mm hex. nut and install a cotter pin at the
left-hand end .
121
Rei nstall the step bar on the crankcase w ith
four 8 mm hex. bo lts. (Fi9.
4-37)