Rear differential plug torque.
#1
Rear differential plug torque.
I just did my final (for a few years) rear differential gear oil change.
I have a nice little torque wrench that easily fits in there to properly torque the plug.
The question is, how much torque? For the long haul I want it perfect so I don't have to baby-sit it, but I just can't seem to find the torque spec. Do any of you fine chaps know this?
I have a nice little torque wrench that easily fits in there to properly torque the plug.
The question is, how much torque? For the long haul I want it perfect so I don't have to baby-sit it, but I just can't seem to find the torque spec. Do any of you fine chaps know this?
#2
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Lubrication (06-12-2016)
#3
Thanks for the advise. I can practically crack off a lug nut with my bare hands, so, snug for me is often way too tight, which is why I'm such a torque wrench *****. :-)
Last edited by Lubrication; 06-12-2016 at 04:01 AM.
#4
#5
It's an NPT plug so doesn't need a lot. Here's what I found on net search:
SAE Pipe Plug Torque Specs
SAE Pipe Plug Torque Specs
#6
#7
While this thread's active, I'll ask one more question.
Have you guys had any issues (leaking seals, etc.) by filling to the plug? 1.2 litres is supposed to go back in, but I got about 1.5 quarts back in by filling to the plug. I hadn't checked the jtis yet before the fill, and went off of hear-say. Any issues?
Have you guys had any issues (leaking seals, etc.) by filling to the plug? 1.2 litres is supposed to go back in, but I got about 1.5 quarts back in by filling to the plug. I hadn't checked the jtis yet before the fill, and went off of hear-say. Any issues?
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#8
Using the table that swingwing posted, it states that you can take the plug to 40 ft-lbs as the rear differential is made from cast steel. Granted, 15 ft-lbs is probably enough to get a good seal anyways. Up to you.
As for the amount of fluid that went back in, 1.5 quarts is about there. 1.2 liters is 1.3 quarts. So, you have a little extra there. This is more than likely due to the car being at a slight angle which placed the plug up a little higher than it should have been. But, I wouldn't worry about it. the extra fluid isn't causing any binding problems (you would have found this out already) and the extra fluid is going to help ensure that the heat gets transferred out of the differential that much easier.
As for the amount of fluid that went back in, 1.5 quarts is about there. 1.2 liters is 1.3 quarts. So, you have a little extra there. This is more than likely due to the car being at a slight angle which placed the plug up a little higher than it should have been. But, I wouldn't worry about it. the extra fluid isn't causing any binding problems (you would have found this out already) and the extra fluid is going to help ensure that the heat gets transferred out of the differential that much easier.
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al_roethlisberger
XJ XJ6 / XJR6 ( X300 )
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04-09-2016 03:50 AM
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