ADAPTER AS 3867037 - Caterpillar

1. On D398, remove the bolts (1). Put an identification mark on bolts (3) and (4) and housing. Remove the cover (2).2. On D399, remove bolts that hold the cover. Remove the cover.3. On D398, remove the bolts that hold vibration damper. Install two 1P7407 Eyebolts in the tapped holes of the vibration damper. Fasten a hoist. 4. On D399, remove the bolts that hold vibration damper. Install two bolts (6) as a guide. Move the vibration damper out on the guide bolts with forcing screws (5). Fasten a hoist and remove vibration damper. Weight of D399 damper is 270 lb. (122 kg) and the D398 is 130 lb. (59 kg).
Do not hit the vibration damper.
Install Vibration Damper (D398 & D399)
1. Install two bolts as guide. Fasten a hoist to the vibration damper. Put the damper in position on the adapter.2. Put 9S3263 Thread Lock on the threads of bolts for vibration damper. Put thread lock on the two bolts with a mark for cover on the D398. 3. Install the bolts and remove guide bolts. Tighten the 1 in. bolts (1) to 670 50 lb. ft. (905 70 N m) on D399. Tighten the bolts (1) on D398 to 280 20 lb. ft. (377 25 N m).4. Install cover (2) on D399. Install cover on D398 with bolts that have a mark in respective place on housing.