Chapter 7 Tractor's PTO System Section 1 Traction Apparatus Traction apparatus are divided into fixed traction apparatus and swing stem traction apparatus. (a) (b) Figure 7-1 Types of traction apparatus (a)Fixed type (b)Swing stem type 1.Pull blade 2.Jaw 3.Hitch pole Automobile and Tractor Northwest A&F UniversityAutomobile and Tractor Northwest A&F University Chapter 7 Tractor’s PTO System Traction apparatus are divided into fixed traction apparatus and swing stem traction apparatus. Section 1 Traction Apparatus Figure 7-1 Types of traction apparatus (a) Fixed type (b) Swing stem type 1. Pull blade 2. Jaw 3. Hitch pole