Camshaft and Timing Gear Train TIMING GEAR HOUSING - LATER 3TNA72 4. Remove engine camshaft. (See procedure in this group.) Removal/Installation 5. Remove oil pump. (See Lubrication System in this section.) 1. Remove idler gear. (See procedure in this group.) 6. Remove water pump. (See Cooling System in this section.) 2. 670 CUT and 3009 OEM: Remove fuel supply pump. (See procedure in ACCESSORIES - SERIES 220 POWER UNIT ENGINES Section.) 7. Remove mounting cap screws and housing. 3. Remove fuel injection pump camshaft. (See Fuel System in this section.) 8. Replace o-rings. 1 Installation is done in reverse order of removal. 4/7/95 1-69 AllTractorManuals.com