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                                                19th May 2012, 01:03 PM
                                        
                                
                                
                                        
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			Freelander big end bearing help
		
 
			
				
					Hi all,
 I am posting this for a work friend. He purchased a Freelander with the 1.8, 16V motor and has found that the motor has done a big end bearing. It looks like this poor motor never had an oil change in it's life.
 
 My question is where can he get new big ends from ? I've spoken to a couple of shops and the insist there is a blue/red/yellow dot on the bearing that tells me what it is. All there is on the bearing is  a stamped G D then  DD then the number LFB10023/Y
 
 Does the letter Y relate to Yellow ?
 
 Cheers,
 
 Peter
 
 
 
 
 
 
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                                                21st May 2012, 06:46 PM
                                        
                                
                                
                                        
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					Here is the procedure to check bearing selection on big ends
 
 1. Record big-end journal code letters from
 crankshaft rear web.
 First letter is number 1 big-end bearing.
 
 Record big-end bearing bore code numbers;
 this will be 5, 6 or 7, located on the connecting
 rod bearing cap.
 2. Check crankshaft big-end journal diameters:
 Big-end journal diameter = 47.986 to 48.007
 mm
 Maximum out of round = 0.010 mm
 Big-end journal tolerance:
 Grade A = 48.000 to 48.007 mm
 Grade B = 47.993 to 48.000 mm
 Grade C = 47.986 to 47.993 mm
 Clearance in bearings = 0.021 to 0.049 mm
 Big-end/connecting rod end-float = 0.10 to 0.25
 mm
 3. Select the appropriate big-end bearing shells
 from the table.
 4. Replace crankshaft if outside tolerance.
 Big-end bearings size
 Big-end bore
 Grade A Grade B Grade C
 Crankshaft big-end journals
 Grade 5 BLUE - BLUE RED - BLUE RED - RED
 Grade 6 BLUE - YELLOW BLUE - BLUE RED - BLUE
 Grade 7 YELLOW - YELLOW BLUE - YELLOW BLUE - BLUE
 Colour code on edge of bearing
 Thickness progression:
 YELLOW - Thin
 BLUE - Intermediate
 RED - Thick
 If two bearing colours are to be used, thicker bearing
 must be fitted to big-end bearing cap.
 
 No the Y doesn't mean yellow LFB10023100L is blue LFB10023200L Red LFB10023300L is yellow.
 What's the condition of the journal like, if the big end bearing has collapsed the crank will be no good.
 
 
 
 
 
 
 
	
	
	
	
	
	
	
	
	
	
	
	
		
		
		
		
			
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