Bernies Bike Shed

Hoffmann Gouverneur problems and restoration

What! i hope to be the oil leak problem, a 50 year old oil seal and two loose nuts on the lower bearing housing!

What! i hope to be the oil leak problem, a 50 year old oil seal and two loose nuts on the lower bearing housing!

Hoffmann camshaft screw(nut)This page will be about my ‘Gouverneur’s’ problems! and how i go about solving them!and restoration as well! So lets start with its troubles,Since owning this very rare bike ,it has two annoying problems  namely a oil leak,which is coming from the crankshaft/clutch end, and a bad knocking in the front suspension probaly due to a combination of loose head bearings and worn telescopic fork bushes.On stripping the forks down,it became apparent that someone had been there before me!I have no engineering background,but i do know you need the correct tools,to do certain jobs.The sleeve nuts which hold the two fork bushes in place on the fork legs are opened  and tighten by a tool which has two hardened dowels about 30mm apart, The same a like tool is used in tightning the nut on a anglegrinder(must find out its correct name).Sadly in the past ,some one had used a pair of ‘Stilsons’to do the job,on the lower alloy sleeve nuts,which resulted in bad teeth marks in the alloy ,UGH !! On the upper sleeve nuts they had resorted to use a hammer and punch,which resulted in badly deformed holes.UGH,UGH!!Once the forks were apart the bushes were found to be badly worn,so are about to be renewed, and the sliders(fork tubes)were pitted and worn!so they are off to a specialist firm ,who will regrind and chrome them back to correct size.

The head bearings,were held in place with the usaul practice of a bearing nut ,a washer and a locking nut!My problem with sloppy head bearings was found to be no WASHER! which resulted in the locking nut only clamping up against the top alloy yoke!result after a few miles or left hand turns the bearing nut slowly undid it self,Solution find or make a washer to the correct size.

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