912UL camshaft pitting or debris
in 912 / 914 Technical Questions
10 years ago
Dear Community
@ all 912UL camshaft experts:
Please have a look at the attached picture. I am just in progress of overhauling my
pistons and cylinderheads. Everything looked good until I had a glimpse through the
bushing of the hydraulic tappets. On 6 of 8 cams I found a light brown discoloration.
First I thought that the surface of the cam is slowly starting to erode (pitting).
Strange to say that all Hyd.lifters are ok and show no signs of unusual wear.
Did anybody of you experience any kind of debris or sediments on the cam? The color
at least looks familiar.
Is the Rotax 912UL cam armed with a thin coating which can start spalling, eventually
excavating a light brown raw material?
Thanks a lot in advance
G.S.
@ all 912UL camshaft experts:
Please have a look at the attached picture. I am just in progress of overhauling my
pistons and cylinderheads. Everything looked good until I had a glimpse through the
bushing of the hydraulic tappets. On 6 of 8 cams I found a light brown discoloration.
First I thought that the surface of the cam is slowly starting to erode (pitting).
Strange to say that all Hyd.lifters are ok and show no signs of unusual wear.
Did anybody of you experience any kind of debris or sediments on the cam? The color
at least looks familiar.
Is the Rotax 912UL cam armed with a thin coating which can start spalling, eventually
excavating a light brown raw material?
Thanks a lot in advance
G.S.
