CAD model of LEGO Technic set 8275 created by EdmanZA using SR3D Builder v0.5.6.12 Completed 19/6/2011 One build step for each parts callout in instructions No electric cables Conrods not connected to crankshaft Tread link spacing not exact to allow for complete run with no visible gaps 2x 32556.Dat - Technic Pin Long subsituted for 6558.Dat - Technic Pin Long with Friction in Step 73.7.4 on Pg 7 of Instruction Book 3/3 Rear plough does not animate. Two models include - one with plough raised and one with lowered.