3516B and 3516C Engines for 789D Off-Highway Trucks Caterpillar


Gear Group (Rear)

Usage:

789D SHH



Illustration 1g02813516



Illustration 2g02575836

Vertical line




Illustration 3g02575837



Illustration 4g02813517

Rear view of engine

Table 1
Specification for 358-3834 Rear Gear Gp    
Item     Qty     Part     Specification Description    
Before assembly, clean the taper of the camshaft and the tapered bore of the camshaft drive gear with lint free cloth saturated with cleaning solvent to remove excess oil. Clean with alcohol wipe.    
Refer to Disassembly and Assembly for the installation procedure for camshaft gear (1).    
2     2     175-5197 Idler Gear As     Before assembly bore in the 125-9751 Bushing for the idler gear assembly is
81.060 ± 0.010 mm (3.1913 ± 0.0004 inch).    
Installation depth of the 125-9751 Bushing is
1.00 ± 0.25 mm (0.039 ± 0.010 inch).
3     4     8M-2530 Bolt     Torque to
140 ± 10 N·m (103 ± 7 lb ft).    
4     1     101-1366 Gear Shaft     Diameter is
74.990 ± 0.010 mm (2.9524 ± 0.0004 inch).    
Refer to Disassembly and Assembly for the installation procedure for camshaft gear (5).    
6     2     101-1367 Idler Shaft     Diameter is
81.000 ± 0.010 mm (3.1890 ± 0.0004 inch).    
7     2     9X-8887 Bolt     Use the following procedure in order to tighten the bolt for the camshaft drive gears:
1. Tighten to
360 ± 40 N·m (266 ± 30 lb ft).
2. Mark a vertical line on the head of the bolt for the camshaft drive gear. Refer to Illustration 2.
3. Place a driver against the retaining plate of the camshaft drive gear. Strike the driver solidly with a hammer 3 to 4 times.
4. Again, tighten to
360 ± 40 N·m (266 ± 30 lb ft).
5. Repeat step 3 and step 4 until the mark on the bolt turns a minimum of 90 degrees. Refer to Illustration 2.    
8     4     1B-4367 Bolt     Torque to
240 ± 20 N·m (177 ± 15 lb ft).    
9     2     8S-2331 Bolt     Torque to
240 ± 20 N·m (177 ± 15 lb ft).    
10     1     175-5200 Idler Gear As     Bore in the 101-1372 Bushing for the cluster gear assembly is
75.060 ± 0.010 mm (2.9551 ± 0.0004 inch).    
Installation depth of the 101-1372 Bushing is
1.5 ± 0.5 mm (0.06 ± 0.02 inch).
12     -     -     The mark on the cluster gear assembly (10) must be in alignment with the mark on the crankshaft gear (11) as shown in the illustration 4.    

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