C27 and C32 Engines for Caterpillar Built Machines Caterpillar


Gear Group (Front)

Usage:

992K 880


Illustration 1g03155599


Illustration 2g03155600
Cam gear bolt tightening sequence

Table 1
Specification for 355-2287 Front Gear Gp 
Item  Qty  Part  Specification Description 
12  7K-3116 Bolt  Tighten bolt in the sequence 1, 4, 2, 5, 3, 6, 1, 4 as shown in Illustration 2 to 240 ± 40 N·m (177 ± 30 lb ft)
112-9217 Thrust Plate  Install the thrust plate with the oil groove side toward the idler gear assembly. 
Before assembly, lubricate the thrust faces with clean engine oil.
Thickness is 4.00 ± 0.25 mm (0.157 ± 0.010 inch).
3G-2292 Locking Bolt  Torque to 55 ± 10 N·m (41 ± 7 lb ft)
117-9712 Drive Idler Shaft  Before assembly, lubricate the shaft with clean engine oil.
Diameter over 128-2661 Bushing end is 63.500 ± 0.013 mm (2.5000 ± 0.0005 inch)
300-5575 Idler Gear As  Before assembly, lubricate the bore of 128-2661 Bushing in the idler gear assembly with clean engine oil.
After installation, bore in the bushing for the drive idler shaft is 63.566 ± 0.013 mm (2.5026 ± 0.0005 inch).
Installation depth of the bushing is 0.38 ± 0.25 mm (0.015 ± 0.010 inch)
6N-1027 Thrust Plate  Install the thrust plate with the oil groove side toward the idler gear assembly. 
Thickness is 3.175 mm (0.1250 inch).
0T-0573 Bolt  Torque to 55 ± 10 N·m (41 ± 7 lb ft)
0S-1571 Bolt  Torque to 55 ± 10 N·m (41 ± 7 lb ft)

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