719 / 1906
GEAR BOX
14
4.2.3 OVERHAULING
4.2.3.1 INFORMATION FOR OVERHAULING
A. COMPONENT INDENTIFICATION
NOTE
Only identification of components which can be as-
sembled incorrectly due to their similar constructions
is mentioned below
ENGAGING GEARS
All engaging gear should be free from play.
1. 1
st
/2
nd
ENGAGING GEAR
This engaging gear is having symmetrical shank on
both faces.
2. 3
rd
/4
th
ENGAGING GEAR
This engaging gear has shank only on 3
rd
gear side.
NOTE
Dimension between drive shaft synchronizing face to
3
rd
/4
th
engaging gear front face 11+0.1
5
th
/REVERSE ENGAGING GEAR
This engaging gear is having asymmetrical shank its
faces. The depth of the shank on the reverse gear
side is more.
SYNCHRO CONES
1. 1
st
/2
nd
GEAR SYNCHRO CONE
This is the double synchro cone. This is used for
gradual gear engagement and this avoids gear
clashing.
DOUBLE SYNCHRO CONE ASSEMBLY PROCE-
DURE
First place the 1st and 2nd speed gear over the
main shaft.
Then place inner synchro cone properly so that
its seat matches with the gear.
Then fix the intermediate cone by properly align-
ing the 3 plugs.
Then fix the outer synchro cone.