Camshaft and Timing Gear Train TIMING GEAR HOUSING - EARLY 3TNA72 Tighten all mounting cap screws to: Cast Iron. . . . . . . . . . . . . . . 11 N•m (96 lb-in.) Aluminum. . . . . . . . . . . . . . . 9 N•m (73 lb-in.) Removal/Installation 1. Remove fuel control and governor linkage. (See Fuel System in this section.) 2. Remove idler gear. (See procedure in this group.) O-Rings Replace. 3. Remove injection pump camshaft. (See Fuel System in this section.) 1 4. Remove engine camshaft. (See procedure in this group.) 5. Remove water pump. (See Cooling System in this section.) M35508 6. Remove oil pump. (See Lubrication System in this section). 7. Remove bracket. 8.
Remove mounting cap screws and housing. Special Screw 9. Replace o-rings Installation is done in reverse order. Install special screw before installing gear housing. M35506 M6 x 14 M8 x 12 1-68 4/7/95 AllTractorManuals.com John Deere Stud (4) Form-In-Place Gasket Apply thread lock and (RTV rubber silicone sealant) sealer (low strength) Bracket to threads. Spring Pin (2) w (2) Timing Gear Housing Alignment Dowel rew Stud Apply thread lock and sealer (low strength) to threads.
Mounting Cap Screw (6) M6 x 16 Screw (2) 14 Mounting Cap Screw (2) M6 x 35 Special Screw Mounting Cap Screw (4) Gasket Cover M6 x 30 M82300A John Deere Form-In-Place Gasket (RTV rubber silicone sealant) (RTV rubber sealer (low strength) Bracket to threads. Spring Pin (2) (2) Timing Ge Alig ew Stud Apply thread lock and sealer (low strength) to threads. Mountin M6 x 16 crew (2) 4 Mounting Cap Screw (2) M6 x 35 Special Screw Mounting Cap Gasket Cover M6 x 30 (RTV rubber ar Housing nment Dowel g Cap Screw (6) Screw (4) M82300A