3126B Industrial Engine Caterpillar

Illustration 1	g00293319

Note: Refer to System Operation, Testing and Adjusting for the correct method of inspecting the flywheel.

(1) Bolt

(2) Ring gear

(3) Spring pin

(4) Shoulder

The following instructions should be used during installation of the ring gear:

1. Install the flywheel ring gear. Face the "part number" on the ring gear (2) toward the engine block. The flywheel ring gear must be installed against the shoulder (4). The flywheel ring gear can be heated for installation. See table 1. Do not use a torch.
   Show/hide table

   Table 1

   Maximum Temperature
   Part Number	Maximum Temperature
   6I-2997 Flywheel Ring Gear	320 °C (608 °F)
   1W-1064 Flywheel Ring Gear	204 °C (400 °F)

2. Press the spring pin (3) into the crankshaft before assembling the flywheel to the crankshaft. Check the distance from the face of the crankshaft to the end of the pin (3) .

   Distance ... 11.0 ± 1.0 mm (.43 ± .04 inch)

3. Tighten the bolts (1) that hold the flywheel to the crankshaft.

   Tighten to the following torque. ... 120 ± 20 N·m (90 ± 15 lb ft)