YOKE 6W1640 - Caterpillar

Installation Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     8T-5096     Dial Indicator Group     1    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Ensure that the crankshaft main bearing tabs engage with the grooves in the block and the crankshaft main bearing cap.
Note: For information on reusability of the crankshaft, refer to the following list.
Guideline For Reusable Parts And Salvage Operations, SEBF8041, "Crankshaft Measurement"
Guideline For Reusable Parts And Salvage Operations, SEBF8054, "Procedure to Measure and Straighten Bent Crankshafts"
Guideline For Reusable Parts And Salvage Operations, SEBF8094, "Procedure to Grind Crankshafts"
Guideline For Reusable Parts And Salvage Operations, SEBF8043, "Visual Inspection of Crankshafts"
Guideline For Reusable Parts And Salvage Operations, SEBF8039, "Inspection of Crankshafts for Cracks"
Guideline For Reusable Parts And Salvage Operations, SEBF8042, "Procedure to Polish Crankshafts"Note: For information on reusability of the cylinder block and salvage procedures, refer to the following list.
Guideline For Reusable Parts And Salvage Operations, SEBF8192, "Specifications and Salvage for Cylinder Blocks on 3114, 3116, and 3126 Engines"
Guideline For Reusable Parts And Salvage Operations, SEBF8261, "Installing a 7C-6208 Cylinder Sleeve in 3114, 3116 Engines and a 107-7604 Cylinder Sleeve in 3126 Engines"
Special Instruction, SEHS8869, "Cylinder Block Salvage Procedure Using Belzona Ceramic R Metal"
Special Instruction, GMG00981, "Using 1P-3537 Dial Bore Gauge Group to Check Cylinder Bore Size"
Special Instruction, SMHS7606, " Use of 1P-4000 Line Boring Tool Group"
Special Instruction, SEHS8841, " Using the Ironstitch Procedure for Casting Salvage"
Special Instruction, SEHS8919, "Salvage Weld Procedure for Cast Iron Cylinder Blocks"
Guideline For Reusable Parts And Salvage Operations, SEBF8076, "Specifications to Salvage Cylinder Block Contact Surfaces"
Check the condition of the crankshaft main bearings. Refer to the Guideline For Reusable Parts, SEBF8009, "Main and Connecting Rod Bearings" and Guideline For Reusable Parts, SEBV0544, "Engine Bearings and Crankshafts".Note: The number four main bearing in 3114 Engines is the thrust bearing. The number six main bearing in the six cylinder engines is the thrust bearing.
Clean the bearing surfaces in the cylinder block for the main bearings.
Illustration 1 g00678393
Install the upper main bearings (4) in the cylinder block. Ensure that the tab on the back side of the bearing engages with the groove in the cylinder block. Apply clean engine oil on the upper main bearing. Do not put engine oil on the back side of the bearing surfaces.
Illustration 2 g00610100
Typical example
Put clean engine oil on the journals of the crankshaft bearing. Fasten lifting straps and a hoist to crankshaft (1) . Carefully install the crankshaft in the cylinder block.
Clean the bearing surface of the main bearing caps.
Illustration 3 g00678394
Install the lower main bearings (5) in the crankshaft main bearing caps (3) . Ensure that the tab on the back side of the bearing engages with the groove in the main bearing cap. Apply clean engine oil on the lower main bearing. Do not put engine oil on the back side of the bearing surfaces.
Install crankshaft main bearing caps with the bearing tabs on the same side. Ensure that crankshaft main bearing