1972 Ski-Doo Shop Manual, Page 23Get this manual
103-01 Suspension
REAR HUB
GENERAL
The flexible action obtained through the link plates and springs provide the rear hub with the endurance to hold the track in straight and
even planeThe link plate assemblies achieve surer handling and even track wear
1 Rear hub
2 Grease fitting Sprocket
4 Mobile flange Bolt Nut Link plate Bearing