Camshaft and Timing Gear Train TIMING GEAR COVER - LATER 3TNA72 Removal/Installation 1. Remove alternator and belt. 3. Remove crankshaft pulley cap screw and washer. 4. Remove crankshaft pulley using a two-jaw puller kit. 5. Remove tachometer, if equipped. NOTE: 430 LGT (Later) and F925/35 FM application is not equipped with a fan. Alternator belt pulley does not have to be removed to access timing gear cover. 6. 670 CUT: Remove hydraulic pump and steering pump, if equipped. (See procedures in Machine Technical Manual.) NOTE: It is not necessary to remove auxiliary drive cover and gasket, if equipped, or end cover and o-ring to remove timing gear cover. 2.
Remove fan, spacer/plate, if equipped, and pulley. 7. Remove mounting cap screws and timing gear cover. Pulley Spacer (3009 OEM, 670 CUT Only) Installation is done in the reverse order of removal. Tighten all mounting cap screws to 9 N•m (78 lb-in.) Adjust fan/alternator drive belt tension.
(See Checks, Tests and Adjustments in this section.) 4/7/95 1-63 AllTractorManuals.com John Deere Form-In-Place Gasket Timing Gear (RTV rubber Cover silicone sealant) End Cover Cap Screw (2) M6 x 18 Cap Screw (4) O-Ring M8 x 35 Gasket Crankshaft Auxiliary Pulley Drive Cover Mounting Cap Screw (5) Washer Mounting Cap Screw (9) M6 x 55 Cap Screw M6 x 25 Apply thread lock and sealer (medium strength) to threads. Early 3TNA72 (430 LGT) 88 N•m (65 lb-ft) M82296A 1 Cap Screw Apply thread lock and sealer (medium strength) to threads. 88 N•m (65 lb-ft) M822 M822 96A Plate Cap Sc 11 N•m 755/56 CUT Only M8 Cap Sc 11 N•m rew (4) (96 lb-in.) 2297A M8 2297A