D379B, D398B & D399 GENRERATOR SET ENGINES Caterpillar

Flywheel Housing

Usage:

Remove Flywheel Housing

start by:

a) remove aftercooler housing

b) remove flywheel

c) remove starters

1. Loosen bolts (4) that hold cylinder block to oil pan base. Remove oil pressure regulating valve (5).

2. Remove the four bolts that hold flange for oil pump to oil pan base.

3. Fasten a hoist and lift engine enough to install spacers on each side of oil pan base. Approximate weight of D379 is 8,000 lb. (3600 kg); D398 is 10,000 lb. (4500 kg); D399 is 13,000 lb. (5850 kg).

4. Remove the baffle seal ring and spring from the thrower.

5. Remove two bolts (1) from flywheel housing. Remove three bolts (2) from elbow. Remove the remainder of bolts (3) that hold flywheel housing to cylinder block.

6. Install two 5/8"-11 NC bolts 6" long as a guide. Install two 3/8"-16 NC forged eyebolts and fasten a hoist.

7. Remove the bolts that hold lifting eye to cylinder block and to the flywheel housing.

8. Remove bolts that hold governor drive housing to flywheel housing.

9. Remove flywheel housing from engine. Weight is 450 lb. (204 kg).

Install Flywheel Housing

1. Put 7M7260 Liquid Gasket Material on top surface of housing that makes contact with governor drive housing.

2. Install two 5/8"-11 NC bolts 6" long as a guide in the cylinder block. Install two 3/8"-16 NC forged eyebolts and fasten a hoist. Put the flywheel housing on the cylinder block. Install the bolts that hold flywheel housing.

3. Install bolts that hold governor drive to flywheel housing.

4. Install bolts that hold lifting eye.

5. Install spring, ring, and baffle on thrower.

NOTE: The word "OUT" on ring must be installed away from crankshaft. Put gap of ring to top of crankshaft when installed. Install bolts that hold baffle to flywheel housing.