different cam chain adjuster on a 750 d1

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different cam chain adjuster on a 750 d1

Postby David Richard » 19 Oct 2019, 19:02

The winter blues have kicked in for me in the uk all my bikes are put away but i got excited 2 weeks ago when on ebay a d1 appeared with 3500 miles on it around trip of 450 miles and it was all as it should be ,but i noticed that the 17 mm hex nut on the cam chain adjuster was strange ,what it has is a grub screw and a lock nut on about 6 mm nut so you can tension the small spring and wedge has any one seen this type of option i and would it even have any affect, the motor is very quiet .i dont plan to leave it i should have got a photo of it but its bagged up now any thoughts ,david
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Re: different cam chain adjuster on a 750 d1

Postby hugojose » 19 Oct 2019, 20:58

By your description, I wouldn't think is 'an option', but rather a home made 'improvement'. The cross wedge is supposed to move only in one direction and locks the main plunger after taking the slack, thus this, I presume, is to put more pressure on the cross wedge and/or lock it up positively.

If so, in my opinion, only makes it more complicated than it is already, and a manual one would be a lot simpler and also locks everything positively.
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Re: different cam chain adjuster on a 750 d1

Postby David Richard » 20 Oct 2019, 06:49

hi hugojose yes thanks for your reply as it stands i have that in mind when its out again its had 3 owners so someone knew they were a week point ,
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Re: different cam chain adjuster on a 750 d1

Postby Freddy » 20 Oct 2019, 07:04

When I bought my D1 it has a home modification mod done to the automatic tensioner, not unlike what you may be describing. It was a screw inserted in the end of the main shaft spring cap.

Perhaps it was a common type of mod in its day???
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Re: different cam chain adjuster on a 750 d1

Postby David Richard » 20 Oct 2019, 19:00

hi yes i think your right well its parked now ,but i will change it ,i have tried to sweet talk my mrs to let me put it in the conservatory over the winter but no luck it got bar rises and no front brake spliter with a loop over pipe to the right caliper so a couple of things to do ,david
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