XC70 No Drive
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02-27-2024, 12:16 PM
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XC70 No Drive
Hi Guys,
I recently bought a 2005 XC70 2.5T with an AW55-51SN gearbox.
The vehicle had no drive when I bought it and the previous owner gave me a toasted gearbox with the car. Story goes, that the original box failed so he bought a second hand box and installed it but 7000km later it failed again.
He sent the vehicle to a Gearbox specialist and they reconditioned the box. But it failed 1000km later with no drive.
I have stripped the original box and found ALL the clutch plates toasted.
I then took the box out the car and found one set of plates toasted and the box oil very dirty.
I have put new plates in the box throughout, completed all the settings as per the manual. I also stripped the valve body that was full of dirt, put new gaskets and rebuilt it with the aid of manuals so I am 99.9% sure it is all correct.
I installed the box I rebuilt plus a recon torque converter but I get zero drive from the box.
On inspecting the oil flow to the oil cooler, there is not a drop of flow. I have no codes logged with the ECM or TCM.
I pulled the box again and double checked the oil pump and everything is right but still no oil flow in the box.
I am at a complete loss. Any ideas or thoughts would be appreciated.
Thank you
I recently bought a 2005 XC70 2.5T with an AW55-51SN gearbox.
The vehicle had no drive when I bought it and the previous owner gave me a toasted gearbox with the car. Story goes, that the original box failed so he bought a second hand box and installed it but 7000km later it failed again.
He sent the vehicle to a Gearbox specialist and they reconditioned the box. But it failed 1000km later with no drive.
I have stripped the original box and found ALL the clutch plates toasted.
I then took the box out the car and found one set of plates toasted and the box oil very dirty.
I have put new plates in the box throughout, completed all the settings as per the manual. I also stripped the valve body that was full of dirt, put new gaskets and rebuilt it with the aid of manuals so I am 99.9% sure it is all correct.
I installed the box I rebuilt plus a recon torque converter but I get zero drive from the box.
On inspecting the oil flow to the oil cooler, there is not a drop of flow. I have no codes logged with the ECM or TCM.
I pulled the box again and double checked the oil pump and everything is right but still no oil flow in the box.
I am at a complete loss. Any ideas or thoughts would be appreciated.
Thank you
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