The Shop > Our Shop
'Living with an old Synchro' and other tales from my shed.
JohnC:
Thanks Pete,
I did just what you suggested: I undid the four screws and rotated the cover around the speed lever - job done. Thanks again.
I have a few more questions now, though.......
I changed all the oils as per the manual. Messy business! Nowhere in my manual does it mention the sight glass for the headstock oil level behind the rear shear. I only found it after I had the top cover off, by dipping the oil level to the rear of the cavity. The gearbox oil change was fine. But the apron....there is a filler plug and a sight glass, which was empty. When I unscrewed it a trickle of fairly dirty oil came out. I flushed the apron with thin oil and then refilled with ISO 68 - most of which ran out of the rear of the apron, leaving the sight glass once more empty! Am I missing a plug somewhere?
The High Speed - Low Speed change lever is temperamental - sometimes it moves smoothly and others is is a pig to shift. I know it has to align with two sets of gear teeth, but is this normal?
Many thanks again for any answers,
John
Pete.:
The high-lever will move easily when the machine is cold and be tight when the machine is warm/hot. It's a known issue, the plastic gear grows and binds on the pinion behind. The drawing was revised to make the gear 10 thou smaller to give some extra clearance bt I think the main problem is that the plastic used (some obscure stuff called Technyl A90 that you can't get any more) absorbs oil over time.
I've made a few sets of those plastic gears now for people. I made them from Delrin which is not only stronger but is very resistant to oils.
JohnC:
Thanks Pete, much appreciated! What do you reckon to the saddle oil level?
Pete.:
I never worried about it the apron gears turn so slowly a squirt from an oil can once in a while does the job.
JohnC:
:thumbup:
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