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Service Differential
#1
Hi 

Has anyone serviced their Diff before? ... I just want to check it out and it's fluids

[Image: wizzy.jpg]
Enjoy's searching out 71-73 history

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#2
1. Remove Driveshaft
2. Remove Tires and wheels
3. Remove Rear Brakes to access the backer plates and undo those.
4. Pull the axels
5. Remove the 3rd member from the axel housing (it is very heavy) The gears and everything come out as one unit.

Any particular reason you want to do this other than curiosity as this job sucks? I may have missed something as it has been a while but once you get started it is pretty intuitive.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#3
I'm planning on pulling mine this winter and send it to a local rear end specialist nearby. Just looking for a basic service and new seals and bearings. Not a job I fancy doing myself. If the guy wants waaay tooo much money, then I may tackle it.
(while I'm at it, I may replace the almost new rear 4 1/2 leaf springs, Scott Drake garbage, for Eaton Springs custom 4 1/2 leaf to, a) get the ride height correct and most importantly, get the rear axle correctly centered )
Geoff.

Geoff.
 I learn something new every day!
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#4
(08-27-2019, 07:10 AM)73pony Wrote: Any particular reason you want to do this other than curiosity as this job sucks? I may have missed something as it has been a while but once you get started it is pretty intuitive.

I saw a youtube video on backlash in spider gears and contact patch for the main crown wheel 
I'd just be happy to know my spiders are ok considering age of car.

[Image: wizzy.jpg]
Enjoy's searching out 71-73 history

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#5
Is it making any noise? Are you having any issues?

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#6
Not that I know of ... but not looking makes my OCD go off balance  Wink he's 48 years old - surely he's got gargantuan wear

[Image: wizzy.jpg]
Enjoy's searching out 71-73 history

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#7
If it ain't broke, don't fix it. Words to live by.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#8
If no noise or leaks it is good to go. If you do pull be sure to change the axle seals and you might do the axle bearings while out also. They are cheap. I broke probably 6 axle bearings on 9" rear they are very weak. The usually split the outer ring. 
I could load my Ford van heavy and for sure would split the bearings had an N case 9" in it. Have also had the axles work out of the bearings even with the retainer rings present due to overloading.


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#9
(08-28-2019, 11:23 AM)Carolina_Mountain_Mustangs Wrote: If no noise or leaks it is good to go. If you do pull be sure to change the axle seals and you might do the axle bearings while out also. They are cheap. I broke probably 6 axle bearings on 9" rear they are very weak. The usually split the outer ring. 
I could load my Ford van heavy and for sure would split the bearings had an N case 9" in it. Have also had the axles work out of the bearings even with the retainer rings present due to overloading.

I have a tiny leak and slight overheat (not sure)  ...after 48 years of use, I'm unsure of condition.

[Image: wizzy.jpg]
Enjoy's searching out 71-73 history

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#10
you could always just replace the diff fluid
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