VALVE 1216653 - Caterpillar

Protect yourself and others; read and understand this warning. Fumes and gases can be dangerous to your health. Ultraviolet rays from the weld arc can injure eyes and burn skin. Electric shock can kill. Read and understand the manufacturer's instruction and your employer's safety practices. Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both, to keep fumes and gases from your breathing zone and the general area. Wear correct eye, ear and body protection. Do not touch live electric parts.Refer to the American National Standard Z49.1, "Safety in Welding and Cutting" published by the American Welding Society, 2501 N.W. 7th Street, Miami, Florida 33125: OSHA Safety and Health Standards, 29 CFR 1910, available from U.S. Dept. of Labor, Washington D.C. 20210.
References
ReferenceSpecial Instruction, REHS1841, "General Welding Procedures".ReferenceRefer to the appropriate Special Instruction, "Installation and Removal of the V-PST Bulldozer" for your machine.Required Parts
Illustration 1 g03544588
Table 1
Required Parts List    
Item     Qty     Part Number     Description    
1     1     446-8020     Housing    
2     8     9X-8271     Bolt    
3     1     296-7452     Retainer    
4     1     197-6439     Bearing    Rework Procedure
Remove the blade from the machine.
Remove the bolts, bearing, and the retainer. Discard the parts.
Illustration 2 g03544589
Arrow show the Grinded location in the housing
Flame cut the current housing (1) from the butterfly bracket (A) .
Grind the cut of the housing to get a smooth surface. Refer to Illustration 2.
Illustration 3 g03544590
Top two arrows show the location of bolts outside the butterfly bracketArrows on the sides show the location for greaser
Illustration 4 g03544591
(B) Dimension is 17.0 1.0 mm (0.67 0.04 inch)
Illustration 5 g03544608
(W1) 20 mm (0.8 inch) bevel weld (W2) 8 mm (0.3 inch) fillet weld from (C) to (D) with 1.5 mm (0.06 inch) root penetration on both sides
Tack weld the new housing (1). Ensure that maximum number of holes are located into the butterfly bracket (A) during housing orientation. This housing must be tack welded in the position as shown in Illustration 3 and Illustration 4.Note: There should be a maximum of two bolt holes outside of the butterfly bracket.
Weld the top and the bottom of the housing to the butterfly bracket. Then weld the joint at both ends of the butterfly bracket and the housing. Refer to Illustration 5 for weld dimensions.
Install a new bearing (4) and retainer (3) .
Install eight new bolts (2). Torque bolts (2) to 55 10 N m (41 7 lb ft). Apply yellow paint on the housing (1) and retainer (3) .
Illustration 6 g03544592
(E) Dimension is 126.0 mm (4.96 inch) (F) Dimension is 16.1 mm (0.63 inch) (G) Dimension is 21.2 mm (0.83 inch)
Before reinstalling the blade on C-Frame tower, ensure that the dimension between top of the sleeve and casting is around (G) to avoid interference during