1954 Ferguson TEA20 # 7 Cam Followers, What's the story with them? (Step by Step Guide)

This video focuses on Ferguson TEA20 cam followers, also known as tappets, detailing how to inspect them for wear and why they are critical for your Standard Motor Company engine health. If you are performing a tractor engine overhaul, understanding the condition of your camshaft and followers is essential to prevent premature failure. Key topics include identifying pitting, lost surface hardening, and the importance of the convex surface for proper rotation. In Part 7 of our Ferguson TEA20 overhaul, we head to the bench to take a close look at the cam followers (tappets). We examine the followers removed from our 1954 project tractor, which show significant damage, including broken sides and a bent pushrod. Lance explains the mechanics of how cam followers work, specifically focusing on the offset design that allows the cam lobe to rotate the follower during operation. This rotation is vital for even wear and longevity. We also compare worn, flat followers to new ones with the correct convex dome and discuss how a "pitted" or worn follower can quickly destroy a camshaft if not replaced. Parts used in this restoration can purchased from Queensland Tractor Spares Web Site: https://www.queenslandtractorspares.com.au Chapter Markers 0:18 Inspecting Damaged Cam Followers from the TEA20 0:54 The Convex Surface: New vs. Worn Followers 1:41 When to Replace vs. Regrind Followers 2:22 Identifying Lost Hardening and Pitting 3:15 Why Cam Lobes are Offset: The Science of Rotation 4:35 Problems with Centered Cam Lobes and Uneven Wear 5:42 How the Follower Rotation Affects the Pushrod 6:01 Tips for Removing Cam Followers

Added 17 Apr 2026