GEAR BOX 6450
17
3.0
OVERHAULING:
3.1
INFORMATION FOR OVERHAULING:
A.
COMPONENT INDENTIFICATION:
NOTE:
Identification of components, which can be
assembled incorrectly due to their similar
constructions are 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 is having asymmetrical shank
on its faces. Depth of the shank on the third gear
side is more.
3.
5
th
/ 6
TH
ENGAGING GEAR:
This engaging gear is having symmetrical shank
on both faces.
SYNCHRO CONES:
Synchro cone pack contains outer cone, inner
cone and intermediate cone. There are two types
of synchro cones.
A. Double synchro cone
B. Triple synchro cone
Difference between double and triple synchro
cone.
Double
Synchro
Cone
Triple synchro cone
Outer Cone having
brass lining on inner
surface.
Outer Cone having
carbon lining on inner
surface.
Inner cone having
brass lining only on
outer surface.
Inner cone having
brass lining on both
inner
and
outer
surface.
Used in the 3
rd
, 4
th
,
5
th
, 6
th
and reverse
gear assembly.
Used in 1
st
and 2
nd
gear assembly only.
NOTE:
A care need to be taken for a double synchro
cone components should not be mixed with triple
synchro cone components during dismantling and
assembly.




