DISC-THRUST 9N4378 - Caterpillar

Flame Spray Equipment and Procedure
Table 5
Maximum Surface Finish 1.6 Micrometers (63.00 Microinches)
Reason for Spraying Bearing failure
Mating Part Contact Area & Material Crankshaft main bearing
Oerlikon Metco Equipment Type 6P-II by Oerlikon Metco
Metco Material Metco 453 Grind 463
Finish Thickness As required
Finishing Allowance 0.51 mm (0.020 inch) per side
Spray Angle 90° to bore
Substrate Pre-Heat Temperature 38° C (100° F)
Substrate Temperature During Spraying Not to Exceed 149° C (300° F)
Auxiliary Cooling If desired
Rotation/Traverse Device Hand held
Rotation/Traverse Speed 15 SMPM (50 SFPM)
Surface Preparation Method Grit Blast
Finishing Method Machine
Recommended Wheel Norton 23A30E12VBEP or SGL abrasive HSA24F13-VKP
Machining Equipment Type Line Boring Machine
Recommended Cutter Grade ISCAR DNMG 432 TFIC507
Table 6
Flame Spray Process (6P-II) Procedure Check List
Clean Part Degrease in hot caustic solution
Undercut Not required
Chamfer All edges - 45° to 0.08 mm (0.030 inch)
Remove Oxide Use die grinder or flapper wheel
Clean Spray Area Metco cleaning solvent or equivalent
Mask for Grit Blast Use metal mask or duct tape
Grit Blast Equipment Pressure type only
Grit Type and Size 24 mesh aluminum oxide
Blast Air Pressure 690 kPa (100.0 psi)
Blast Nozzle to Work Distance 51 mm to 150 mm (2.0 inch to 6.0 inch)
Remove Blast Mask Remove mask, make sure that surface is clean
Mask for Metal Spray Metco Anti-Bond or blue layout dye
Metal Spray Equipment Type 6P-II Hand Held Thermo Spray System by Oerlikon Metco
Auxiliary Cooling If desired
Nozzle 6P-7CA-K "K" Nozzle
Air Capacity/Pressure 6P-3/Cooling Air 140 - 170 kPa (20.0 - 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 (12.00 lb) per hour 0.10 - 0.15 mm (0.004 - 0.006 inch) per pass
Gun to Work Distance 230 mm (9.0 inch)
Rotation Speed of Part (RPM) N/A
Rotation Speed of Part N/A
Traverse Rate of Gun 15 SMPM (50.00 SFPM)
Gun Fixturing Method Hand held
Bond Pass/Thickness 0.13 mm (0.005 inch)
Top Coat/Thickness As required
Finishing Equipment Line boring machine
Part/Cutter Rotation 46 to 55 SMPM (150.0 to 180.0 SFPM)
Traverse Speed 0.08 mm (0.003 inch) or less
Depth of Rough Cut 0.25 mm to 0.51 mm (0.010 inch to 0.020 inch)
Depth of Finish Cut 0.13 mm to 0.25 mm (0.005 inch to 0.010 inch)
Additional Finish Method Flex hone if necessary Specifications
Illustration 3 g03041877
Specifications for Dimension A are found in the documents listed below.
Table 7
Crankshaft Main Bearing Saddle Specifications
Media Number Media Title
SEBF8101 Specifications for Cylinder Blocks in 3600 and C-280 Family of Engines
SEBF8192 Specifications and Salvage for Cylinder Blocks on 3114, 3116, 3126, and 3126B Engines
SEBF8255 Procedure to Salvage Cylinder Blocks of 3500 Engines
SEBF8277 Specifications and Salvage for Cylinder Blocks on 3126 Engines
SEBF8282 Specifications and Salvage for Cylinder Blocks on 3176 Engines
SEBF8818 Specifications and Salvage for Cylinder Blocks on 3054/3054B/3054C/3054E and 3056/3056E Engines
SEBF9007 Specifications for Cylinder Block Assemblies on C-Series Engines
SEBF9049 Specifications for Short Block Assemblies for 3044, 3046, 3064, and 3066 Engines
SEBF9185 Specifications for Cylinder Blocks in C175 Engines