Honda CB350 Repair Manual page 88

ENGINE AND TRANSMISSION 83
24
Removing the shift drum
Removing the shift fork shaft (3), and shift forks (4),
drum stopper and spring (1 and 2) also shown
shift fork guide shaft after marking the
location of the two shift forks (left or
right), remove the forks taking care not to
lose their guide pins. Remove the guide
pin clip and guide pin from the remain—
ing shift fork and slide the drum out the
right—side ofthe case.
4. The transmission gears can be re—
moved from their shafts after removing
the cirelips which secure them. All com—
ponents should be carefully laid out in
the order in which they are removed so
that they can be installed in their proper
locations.
Inspection
1. Check each of the gears for
chipped, broken, or worn teeth. If any
gear shows evidence of such damage, it
should be replaced. In addition, the gear
with which it meshes should be replaced
as well, since it has undoubtedly been
overstressed.
2. Check the inner splines on those
gears so equipped, and replacethe gear if
the splines are worn or broken. Inspect
the corresponding splines on the shaft.
The shafts should be replaced if dam—
aged.
3. Inspect the engaging dogs on gears
so equipped. The dogs must not be worn,
chipped, or broken. Replace the gears if
they are.
4. Inspect the transmission shafts for
damage to the clutch housing or coun—
tershaft splines. Make sure that the shafts
are not bent. Replace the shafts if neces—
sary.
5. 350 models: Measure the inside di—
ameter of all the gears without splines,
then measure the diameter of the shafts
on which they fit. Find the gear—to—shaft
clearance from the difference in these
measurements. The clearance should not
exceed the service limit given at the end
ofthis chapter.
6. Replace any galled thrust washers.
It is recommended that the thrust
washers be replaced in any event. Trans—
mission shaft circlips should always be
replaced once they are removed.
7. Check all parts for heat damage
(discoloration).
Checking gear backlash
8. Install the gear clusters in the neu—
tral position, lock each mainshaft gear in
turn, and check the corresponding coun—
tershaft gear for rotational movement
(backlash) with a dial gauge as illus—
trated. Compare the gauge reading with
the backlash specification for your model.
If the backlash is excessive, both gears
must be replaced.