G379, G398 & G399 ENGINES Caterpillar


Vibration Damper

Usage:

G398

NOTE: Mount a dial indicator on the front of the accessory drive housing.

(1) Maximum permissible change from an exact vertical face (runout) during one rotation (total indicator reading) ... 0.10 mm (.004 in.)

(2) Maximum total indicator reading in one rotation of the pilot bore shall not exceed ... 0.10 mm (.004 in.)

NOTE: Put 8H5137 Sealant on threads of bolts.

(3) Torque for bolts that hold the adapter to the crankshaft ... 624 ± 25 N·m (460 ± 20 lb ft)

(4) Torque nuts that hold damper to adapter ... 100 ± 14 N·m (75 ± 10 lb ft)

G399

NOTE: Mount a dial indicator on the front of the accessory drive housing.

(1) Maximum permissible change from an exact vertical face (runout) during one rotation (total indicator reading) ... 0.10 mm (.004 in.)

(2) Maximum total indicator reading in one rotation of the pilot bore shall not exceed ... 0.10 mm (.004 in.)

NOTE: Put 8H5137 Sealant on threads of bolts.

(3) Torque for bolts that hold the adapter to the crankshaft ... 910 ± 70 N·m (670 ± 50 lb ft)

(4) Spacer must be installed.

(5) Torque for nuts that hold dampers to adapter ... 100 ± 14 N·m (75 ± 10 lb ft)

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