PULLEY-FAN DRIVE 4N6288 - Caterpillar

Start By:a. remove torque converter **This operation is in the 785 Truck Power Train, Disassembly And Assembly module. 1. Fasten a hoist and tooling (A) to flywheel (1).2. Remove two bolts (2), and install two 1"-14 NF guide bolts approximately 203 mm (8 in.) long.3. Remove the remainder of bolts (2), and remove flywheel (1). The weight of the flywheel is 110 kg (243 lb.). 4. If necessary, remove ring gear (3) from flywheel (1). The following steps are for installation of the flywheel.5. If ring gear (3) was removed from the flywheel; heat the ring gear to a maximum temperature of 320°C (608°F). Install ring gear (3) on flywheel (1) with the tooth chamfer toward the engine when the flywheel is installed.6. Install two 1"-14 NC guide bolts approximately 203 mm (8 in.) long in the end of the crankshaft.7. Fasten a hoist and tooling (A) to flywheel (1). Make sure the mark on the flywheel is aligned with the mark on the crankshaft when the flywheel is installed.8. Put flywheel (1) in position on the guide bolts.9. Put clean SAE 30 oil on the threads of bolts (2). Install 10 bolts (2) to hold the flywheel in place.10. Remove the hoist and tooling (A) and the guide bolts, and install the remaining bolts (2). Tighten bolts (2) to a torque of 800 30 N m (590 22 lb.ft.).11. Check the flywheel runout. See Specifications for 3500 Vehicular Engine For 785 Truck, Form No. SENR4002.
B. Ref. Seal location. Later models require a seal between the flywheel and the torque converter. If your machine is so equipped, be sure to install the seal when installation of the torque converter is made.End By:a. install torque converter **This operation is in the 785 Truck Power Train, Disassembly And Assembly module.