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GEAR BOX
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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
3. 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.