John Deere – 1023E, 1025R and 1026R – Check Timing Gear Backlash

[1] – Remove timing gear cover. (See Remove and Install Timing Gear Cover in Section 20, Group 05.)

[2] –

Place dial indicator magnetic base on cylinder block with tip of indicator on tooth of gear being measured.

[3] – Holding opposite gear stationary, move measured gear back and forth while measuring backlash between meshing gears. If backlash exceeds specifications, replace worn gears as a complete set: Idler Gear, Camshaft Gear, Crankshaft Gear, Fuel Injection Pump Drive Gear.