BEARING 3872156 - Caterpillar

Illustration 4 g02153857
Detail A (A) 70 mm (2.8 inch) (B) 44.8 mm (1.76 inch) (C) 174.5 mm (6.87 inch) (D) 100 mm (3.9 inch) (E) Hole of diameter 16.75 mm (0.659 inch)
Illustration 5 g02154333
(16) Reference plane for hole dimension
Drill four through holes to dimension (E) on the right-hand side platform group to add one additional bracket assembly (1). Refer to Illustration 4 for the location of the holes.
Illustration 6 g02153858
(F) 25.0 mm (0.98 inch) (G) 100 mm (3.9 inch) (H) 125 mm (4.9 inch) (J) 175 mm (6.9 inch)
Cut access window in the right-hand side platform in order to spot weld four 8T-3597 Weld Nuts to the bottom of the structural channel. The four weldnuts are used to add one additional bracket assembly (1) to the muffler group. Refer to the Illustration 6.
Cover the access window with a 6 mm (0.24 inch) plate after the weld nuts have been Installed.
Illustration 7 g02153855
Install the three improved bracket assemblies (8) in place of the bracket assemblies (15). Use six new bolts (6) and six new hard washers (7) to install each bracket assembly. Tighten the bolts (6) to standard torque.
Use suitable lifting device and install the muffler assembly (9) that was removed in Step 9. Connect the muffler assembly with the tube assembly (14) by using clamp (10) .Note: Before assembly, apply high temperature anti-seize compound to the threads and bearing surface of the locknuts (5) .
Assemble the straps (13) to the improved bracket assemblies (8) by using bolts (3), washers (4) and locknuts (5). Use the parts that were removed in Step 8. Tighten the locknuts to 30 7 N m (266 62 lb in).
Tighten the clamps (10) to 12.5 1.0 N m (110 9 lb in).
Illustration 8 g02154334
Install the three improved bracket assemblies (1) in place of the bracket assemblies (12). Use four new bolts (6) and four new hard washers (7) to install each bracket assembly. Tighten the bolts (6) to standard torque.
Use suitable lifting device and install the muffler assembly (9) that was removed in Step 4. Connect the muffler assembly with the tube assembly (11) by using clamp (10) .Note: Before assembly, apply high temperature anti-seize compound to the threads and bearing surface of the locknuts (5) .
Assemble the straps (2) to the improved bracket assemblies (1) by using bolts (3), washers (4) and locknuts (5). Use the parts that were removed in Step 3. Tighten the locknuts to 30 7 N m (266 62 lb in).
Tighten the clamps (10) to 12.5 1.0 N m (110 9 lb in)Procedure to Update the 290-8857 Exhaust Pipe Gp
Table 4
Parts required to Update the 290-8857 Exhaust Pipe Gp    
Item     Qty     Part Number     Description    
1     1     311-4099     Bracket As    
2     1     311-4102     Bracket As    
3     8     8T-4136     Bolts    
4     8     8T-4121     Hard Washers    Use the following