Are my synchros worth replacing?

ronsealdeath · Jun 11, 2013

Hi there, just been inspecting the 3rd/4th synchro unit on my old box, I have no idea what I'm looking for in terms of wear but one end has a kind of groove worn into the serrated face. The box had an ok change and there was never any obvious issue with the synchro 3rd/4th.

I'm inclined to leave it as is, but seeing as its all apart and would potentially benefit from a new unit, should I replace the unit (or bits of the unit)?

Also while I am at it, does anyone recommend any particular bits to replace while its all apart? I'm doing all the bearings and seals (plus gaskets of course), should I do the distance piece etc...?

Thanks in advance

Worn side

Other side (looks to have no groove)

jamesmartin · Jun 11, 2013

looks fine ,replace springs rtc1956 only use oe or genuine cheap ones arent going to last above a day or so ,remember it only fits one way round and put it in 3rd gear position to aid fitting fork later

ronsealdeath · Jun 11, 2013

jamesmartin said:
looks fine ,replace springs rtc1956 only use oe or genuine cheap ones arent going to last above a day or so ,remember it only fits one way round and put it in 3rd gear position to aid fitting fork later

Thanks James, much obliged.

ronsealdeath · Jun 12, 2013

Hi there, stuck again.... anybody got any techniques, tips, spells to get the snap ring off the mainshaft; think its on2nd3rd gear? i have tried with thin screwdrivers but its so awkward!
Or shall i just leave it on and not bother swapping the distance piece?
thanks in advance

jamesmartin · Jun 12, 2013

dot punch or small chisel opposite the gap and split it off ,is the way i do it

ronsealdeath · Jun 12, 2013

jamesmartin said:
dot punch or small chisel opposite the gap and split it off ,is the way i do it

Ill order one with all the other bits then. Thanks James. Should i replace the synchro cones as well as they are quite cheap?
cheers

jamesmartin · Jun 12, 2013

i would ,snap ring sits over 3rd gear then 2nd then first on rear of m/s ,baulk rings should be replaced if look worn and when pressed onto gear cone theres less than 25 thou gap between the 2 ,allways check new ones too,

ronsealdeath · Jun 12, 2013

Thanks again

Are my synchros worth replacing?

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