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|  Oil pressure relief valve 
			
			Hello, I am looking for the oil pressure relief valve (CTL 645 A assembly) for my carrier. Does anyone know where to find this part? According to part number, it was a special part for carriers but is there an equivalent part for commercial Ford trucks? Best Regards, Raphael | 
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			Where is that part located in the Carrier Oil system?  In trucks, there are 2 oil pressure valves, one is a component of the Oil Pump and another is located in the Oil Gallery in the block. They are still available for 50# and 80# systems. | 
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			It is outside the engine, above the clutch (see picture).
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			If we call it the oil cooler bypass valve, then others will know what it does. It allows cold, thick oil to bypass the cooler, but only if it has a p.d. (electrical term= potential difference) of 3.5 pounds (approx) Sorry I cannot direct you to one, Bauduin. 
				__________________ Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... | 
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|  Oil cooler 
			
			Page 130, Illustration No. 26, FUC-03  Version SE-83-44, Reissued May, 1944. | 
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|  Ctl 645a 
			
			Hi Raphael I think I have what you are looking for. Give me your email address and I will send you photos of this part. Best Regards Adrian | 
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