GEAR (SEM) 5521861 - Caterpillar

START BY: a. remove engine 1. Put tooling (A) in position on the flywheel with the end of the tool engaged in the groove of the flywheel as shown.2. Remove two of the bolts, opposite each other, that hold the flywheel to the crankshaft. Install two 7/16"-20 NF × 7 in. (178 mm) long guide bolts (1) in the crankshaft.3. Remove the remainder of the bolts, and remove flywheel (2) from the crankshaft. The weight of the flywheel is 27 kg (60 lb.). 4. Remove ring gear (3) from flywheel (2) with a punch and hammer.Install Flywheel
1. Heat ring gear (2) to a maximum temperature of 204°C (400°F). Install the ring gear on flywheel (1) with the part number toward the engine when the flywheel is installed. 2. Install two 7/16"-20 NF × 7 in. (178 mm) guide bolts opposite each other in the end of the crankshaft.
When a new flywheel is installed, check the thickness of the new flywheel at the bolt holes in relation to the thickness of the old flywheel. Install the correct length bolts so they will be fully engaged in the crankshaft flange. Bolts that are too long will make contact with the block on the back side of the crankshaft flange and pull the crankshaft back. This will cause the crankshaft thrust bearing to fail.
3. Put tooling (A) in position on the flywheel with the end of lifting bracket engaged in the groove of the flywheel as shown. Put flywheel (1) in position on the guide bolts, and make sure offset hole (4) in the flywheel (identified by dash mark) and the mark on the end of the crankshaft are in alignment.
Make sure the correct sealant is put on the bolt threads. The holes for the bolts in the crankshaft flange are drilled through so the holes are open to the oil in the engine. Leakage along the bolt threads can be the result if the correct sealant is not used.
4. Put 9S3263 Thread Lock on the bolt threads, and install all but two of the bolts in the flywheel. Remove tooling (A) and the guide bolts. Install the remainder of bolts (3) in the flywheel. Tighten the bolts to a torque of 75 8 N m (55 6 lb.ft.). 5. Use tooling (B) to measure the face runout and bore runout of the flywheel. The face runout and bore runout must not be greater than 0.15 mm (.006 in.) total indicator reading. See Specifications for the correct procedure to measure the face runout and bore runout of the flywheel.END BY: a. install engine