BUSHING 1243531 - Caterpillar

Engine: 3516 (S/N: 71Z1-UP) 3512B (S/N: 8RM1-UP; 6WN1-UP) 3516B (S/N: 6HN1-UP; 7RN1-UP)Generator Set: 3508B (S/N: CNB1-UP; ZAD1-UP) 3512 (S/N: PTG1-UP) 3512B (S/N: CMC1-UP; PTF1-UP; ZAH1-UP) 3512C (S/N: SBG1-UP) 3516 (S/N: CMD1-UP; ZAL1-UP) 3516B (S/N: FDN1-UP; ZAP1-UP; GAR1-UP; PBR1-UP; ZAR1-UP; GZS1-UP) 3516C (S/N: SBJ1-UP; SBK1-UP)Introduction
Do not perform any procedure in this Special Instruction until you read this information and you understand this information.Installation of the Stub Shaft onto the Engine
The stub shaft is mounted onto the vibration damper on the engine. Use the following procedure to mount the stub shaft. Do not install the stub shaft over the existing bolts.
Illustration 1 g01357241
(1) Vibration damper guard
Illustration 2 g01357314
8N-9639 Damper Guard Gp and 197-9052 Damper Guard Gp (2) Bolts
Illustration 3 g01378298
7W-6669 Damper Guard Gp (2) Bolts
Remove bolts (2) that secure guard (1) to the engine.
Illustration 4 g01357342
Illustration 5 g01357352
(3) 8S-4757 Bolts
Remove bolts (3) that are 180 degrees from each other.
Illustration 6 g01375147
(4) Guide stud 1 - 14 by 10 inch
Install two guide studs (4) into the holes that are located 180 degrees from each other.
Illustration 7 g01357390
Remove the remaining bolts (3) .
Illustration 8 g01357391
Illustration 9 g01357743
Remove the paint from the surface of the damper. The stub shaft cannot be installed correctly without removing the paint.The paint must be removed from the edges of the damper and from the surface of the damper.
Illustration 10 g01375152
(5) Index mark on the flange of the stub shaft
Locate index mark (5) that is located on the flange of the stub shaft.
Illustration 11 g01375155
(6) Index mark on the damper
Locate index mark (6) that is located on the vibration damper.
Illustration 12 g01375156
Correct alignment of the index marks
Line up index mark (5) and index mark (6) .
Illustration 13 g01375177
(7) Stub shaft
Use guide studs (4) in order to install stub shaft (7) .Ensure that index marks (5) and index mark (6) are aligned.
Ensure that stub shaft (7) is seated correctly in the damper.
Apply a molybdenum disulfide grease under the shoulder of the bolt heads and to the threads before assembly.
Illustration 14 g01357864
Install four 9F-8122 Bolts with 5P-8250 Washers .Do not tighten the bolts.
Remove guide studs (4) .
Install the remaining two 9F-8122 Bolts with 5P-8250 Washers .Do not tighten the bolts.
Illustration 15 g01374932
Tighten the 9F-8122 Bolts .Refer to Illustration 15 for the tightening sequence of the bolts. 9F-8122 Bolts Torque ... 1150 150 N m (850 110 lb ft)
Illustration 16 g01358115
Measure the run out of stub shaft (8) . 129-2288 Shaft Maximum runout ... 0.254 mm (0.0100 inch)
Install vibration damper guard (1) .Bolts for 8N-9639 Damper Guard Gp and 197-9052 Damper Guard Gp Torque ... 15 3 N m (133 27 lb in)Bolts for 7W-6669 Damper Guard Gp Torque ... 7 2 N m (62 18 lb in)