CYLINDER HEAD REPLACEMENT 5R6291 - Caterpillar

Table 2
References
Media Number Publication Type & Title
SEBF9236 Reuse And Salvage Guideline , "Fundamentals of High Velocity Oxygen Fuel (HVOF) Spray for Reconditioning Components"
SEBF9238 Reuse And Salvage Guideline , "Fundamentals of Arc Spray for Reconditioning Components"
SEBF9240 Reuse And Salvage Guideline , "Fundamentals of Flame Spray for Reconditioning Components"
SEBF8119 Reuse And Salvage Guideline , "Differential Housing Components for Wheel Loaders, Articulated Trucks, Wheel Tractors, Compactors, Integrated Toolcarriers, and Motor Graders"
SEB8227 Reuse And Salvage Guideline , "Salvage of Differential Housing Assembly Used on Off-Highway Trucks" Part Description
Table 3
Base Metal Ductile Iron
Hardness - Flame Spray Equipment and Procedure
Table 4
Maximum Surface Finish 7.6 to 10.2 Micrometer (300.00 to 400.00 Microinches)
Reason for Spraying Wear when load is applied
Mating Part Contact Area & Material 1/2 Housing/Pinion Gear Bearing inner race
Metco Equipment Type 6P-II
Metco Material 452 or 453
Finished Thickness As Required
Finishing Allowance 0.51 to 0.64 mm (0.020 to 0.025 inch) per side
Spray Angle 70° to 90°
Substrate Pre-Heat Temperature 66° C (150° F)
Substrate Temperature During Spraying Not to Exceed 148° C (300° F)
Auxiliary Cooling If desired
Rotation/Traverse Device Lathe or turntable
Rotation/Traverse Speed 10.5 SMPM (300.00 SFPM)
Surface Preparation Method Undercut and Grit Blast
Finishing Method Machine
Machining Equipment Type Lathe
Recommended Cutter Grade 883 Carboloy or equivalent
Table 5
Flame Spray Process (6P) Procedure Check List
Clean Part Degrease in hot caustic solution
Undercut To "tru-up" surface
Chamfer 45°
Remove Oxide Clean/strip disc or fiber flap brush
Mask for Blast Use metal mask or duct tape
Blast Equipment Pressure
Grit Type and Size 25/40 steel angular grit
Blast Air Pressure 620 kPa (90.0 psi)
Blast Nozzle to Work Distance 50 mm (2.0 inch)
Mask for Spray Anti-bond
Spray Equipment Type 6P-II
Auxiliary Cooling If desired
Nozzle 6P-C7A-K "K" Nozzle
Air Capacity/Pressure 6P-3/Cooling Air 140 to 170 kPa (20.0 to 25.0 psi)
Oxygen Pressure 210 kPa (30.0 psi)
Oxygen Flow 1190 L/h (42.0 cfh)
Fuel Gas Pressure 100 kPa (15.0 psi)
Fuel Gas Flow 1415 L/h (50.0 cfh)
Carrier Gas Pressure 380 kPa (55.0 psi)
Carrier Gas Flow 1050 L/h (37.0 cfh)
Spray Rate/Build Up 5.5 kg (12 lb) per hour or 90 gr (3.2 oz) per min
Gun to Work Distance 230 mm (9.0 inch)
Rotation Speed of Part (RPM) 75 - 110 RPM (dependent upon dia.)
Rotation Speed of Part 10.5 SMPM (300.00 SFPM)
Traverse Rate of Gun 1.7 SMPM (50.000 SFPM)
Gun Fixturing Method Machine mount
Top Coat/Thickness 0.10 to 0.15 mm (0.004 to 0.006 inch) per pass
Finishing Equipment Lathe
Part/Cutter Rotation 5.2 to 6.3 SMPM (150.00 to 180.00 SFPM)
Traverse Speed 0.05 to 0.10 mm (0.002 to 0.004 inch) per revolution
Depth of Rough Cut 0.38 to 0.51 mm (0.015 to 0.020 inch) per side
Depth of Finish Cut 0.25 to 0.38 mm (0.010 to 0.015 inch) per side
Additional Finish Method Emery polish Specifications
Illustration 3 g03072898For dimensional specifications refer to Reuse and Salvage Guideline,, SEBF8119, "Differential Housing Components for Wheel Loaders, Articulated Trucks, Wheel Tractors, Compactors, and Integrated Toolcarriers". and Reuse and Salvage Guideline,, SEBF8227, "Salvage of Differential Housing Assembly Used on Off-Highway Trucks".