Triumph TR6 PI Operation Manual page 243

SYNCHROMESH GEARBOX
I. Remove the synchro units 37.20.04 (1 - 23).
- 3rd/top - 14 to 19lbs (6'7 to 9'1 kg)
If the release loads are below these limits, use new
springs. If above, grind down the springs.
8. Refit the synchro units 37.20.04 (39 - 62).
Dismantling
2. . Within the walls of a small box to prevent loss of
components, carefully push the synchro hub through
the sleeve.
3. Collect the three steel balls and springs.
NT0841
3.5'::=\
37.20.08 - Overhaul
SYNCHRO UNITS
Reassembling
4. Trial fit the sleeve to the hub. The fit should be free
sliding.
5. Assemble three springs and steel balls to the hub.
6. Fit the sleeve.
7. Test, using a spring balance. The axial release load
which should be:
- 1st/2nd - 21 to 26lbs (10'1 to 12'5 kg)
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37.20.08
Triumph TR6 Manual. Part No. S4S277 Issue J