Eaton RTX-12510, Service Manual

Page: 42 / 126

D. Removal and Disassembly of the Mainshaft Assembly
1. Block the right countershaft against the side of the case
and move the mainshaft as far to the rear as possible. Tip
the front of the mainshaft up and remove the assembly
from the case. Use caution as the reverse gear is free and
may fall from the shaft.
2. Remove the 4th-5th speed sliding clutch.
4. Remove the reverse gear spacer and pull the key to the
rear and from the mainshaft.
NOTE: When removing washers, spacers and gears, note
their location to facilitate reassembly of the mainshaft.
Keep washers and spacers with the gear from which they
were removed; there is one spacer and one washer for
each gear. The spacers have external splines and the
washers have internal splines.
5. Work the washers, spacers and gears from the mainshaft.
It will be necessary to turn the washers, located in the
hubs of the gears, to align with the splines of the main-
shaft. If necessary, remove the snap ring from the hub of
each gear.
3. Remove the snap ring from the rear of the mainshaft.
42