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3. Disassembly and Assembly
01/2018 Rev. 1
EA(B)O-6X06
Synchronizers
6203
6202
1
2
3
4
1
2
3
NOTE: Synchronizers sets are disassembled and
assembled during the mainshaft disassembly and
assembly, whose instructions in this manual provide
the necessary details.
Characteristics
EA(B)O-6X06 transmissions use two types of synchronizer
sets, all mounted on the mainshaft:
• Synchronizer with synchronizing rings of the “Tricone”
type, used in the 1st and 2nd speed gear
• Synchronizer with single synchronizer ring, one for each
gear, used in the 3rd, 4th, 5th and 6th speed gears.
NOTE: In case of repair of a synchronizer set, do
not replace parts separately. Always replace the
whole set.
The Tricone-type synchronizer ring consists of three rings
mounted one inside the other: an inner ring, a middle ring and
an outer ring. This provides a larger contact area, allowing
for a more accurate speed equalization between the gears,
making downshifting easier and smoother.
1. Inner ring
2. Middle ring
3. Outer ring
Synchronizer with Tricone-type rings
1. Tricone-type synchronizer ring
2. Hub
3. Key (3x)
4. Sliding clutch (synchronizer sleeve)
