I am replacing the oil pump belt, and discovered that I have a small oil leak inside the oil pump belt cover. Minor, but enough that the turbulence from the belt throws the small amount of oil around and makes the belt oily. It is hard to determine where the oil is coming from, but the seal looks dry, while the inside of the gear is wet and the two bolts heads inside the cover have oil drips on them. Any thoughts on the likely leak source, and how to fix it, are greatly appreciated.
Oil leak
- Thread starter charger440
- Start date
You can replace just the seals - they're not serviced by Ford as separate items but are a relatively common size.
My scribbled notes suggest they're 28 x 50 x 8 double lipped nitrile seals - less than $5
Most bearing and seal shops should be able to get them if they're not on the shelf.
My scribbled notes suggest they're 28 x 50 x 8 double lipped nitrile seals - less than $5
Most bearing and seal shops should be able to get them if they're not on the shelf.
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Thanks for the good advice. I find the original Ford oil pump (4G7Z-6600-AA) for $ 1,523, and the Melling oil pump (M360) for $ 98. Would the Melling oil pump be OK? (it is listed as standard pressure, standard volume, aluminum body).
So I went ahead and bought a new oil pump to solve the small oil leak inside the oil pump belt cover. Turned out that I received what I assume to be the internal oil pump (?), and not the outer one behind the belt. What is the outside one called? Oil sump pump maybe? A good source for this part?
It was a Melling oil pump M360, application listed for both the 07-12 GT500 and for the 05-06 GT with dry sump (see first link below). I did find the external oil pump from a Ford OEM parts vendor (see second link below). But at that price I will first try to find the correct seal and replace it.
www.fordpartsgiant.com
Melling M360HV 2005-2012 Shelby Cobra 5.4L 2005-2006 Ford GT Oil Pump DOHC Vin S | eBay
Fits: Ford 5.4L DOHC Vin S 2007-2012 Mustang Cobra 5.4L & 2005-2006 Ford GT. Cast Aluminum Body. Standard Pressure.
www.ebay.com
4G7Z-6600-AA 4G7Z6600AA Genuine Ford Part
Ford part # 4G7Z-6600-AA 4G7Z6600AA, Base part # 6600, $3119.20 online at FordPartsGiant.com. Wholesale-priced and fast-delivered Ford parts Pump Assembly - Oil.
www.fordpartsgiant.com
CanadaGT
GT Owner
I worked on one that was leaking and the chamfer on the taper of the pulley was off. Put a spacer washer to suck the pulley tight, it did the trick. I believe the threads for the nut were not deep enough and the nut was bottoming out on torque spec. Hence the spacer (Hardened Chrome washer from my Harley days) Anyway it still is not leaking at his service this year. My $.02
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