799 / 1863
GEAR BOX 6450
31
SYNCHRO CONE PACK ASSEMBLY:
Two types of synchro pack assembly are as
follows:
1. Triple synchro cone assembly.
2. Double synchro cone assembly.
DOUBLE AND TRIPPLE SYNCHRO CONE
ASSEMBLY PROCEDURE:
First place the inner cone, secondly place
intermediate cone on it and then place outer
cone on it. This enables us to prepare the
synchro pack assembly.
Place this synchro pack assembly on
respective gear assembly and measure cone
gap.
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.
SUB ASSEMBLY OF ENGAGING GEARS:
It consist of Shifter sleeve, engaging gear and
struts.
Identify all the gears and needle bearing cages.
The gears are to be assembled in pairs of 1
st
/ 2
nd
3
rd
/ 4
th
, 5
th
/ 6
th
and reverse.
Keep gear such that dogteeth are facing upwards.
Fit proper synchro cone. Fit proper engaging
gear over synchro cone, fit other pair of gears.