TC rear axle

[cameron@magma.ca]

Years ago I repaired the spring perches on my TC rear axle. I now can't remember if the original dimensions were maintained- there was a fair amount of chopping and filling to do and I don't much like the looks of the job I did. Can anyone tell me the correct vertical dimension from lower surface of spring seat to centreline of axle, or to bottom of axle tube? David Cameron

[Roger Furneaux]

Hi David - its much easier to measure from the TOP surface of the axle tube to the lower surface of the spring seat, using a 6" vernier caliper. I looked at two and they were both 5.35" (5 + 11/32"?), axle tubes were 2.125" (2 1/8") diam. Strengthening pieces are best welded in above the usually distorted or cracked bolt holes to maintain correct ride height, but a useful mod is to make up new rear spring top plates. The originals are narrow with only half holes (i.e. semi-circular cut-outs) but wider plates with full holes would give the axle much more support. ocTagonally Roger

>Years ago I repaired the spring perches on my TC rear axle. I now can't >remember if the original dimensions were maintained- there was a fair amount >of chopping and filling to do and I don't much like the looks of the job I >did. Can anyone tell me the correct vertical dimension from lower surface of >spring seat to centreline of axle, or to bottom of axle tube? > >David Cameron > > > > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >

[Jorolibb@aol.com]

David, I have my rear axle housing on the bench in my shop. I can get this measured this weekend if you still need it. John Libbert J2 3118 TC 2138 MGA 70528

[cameron@magma.ca]

I just replied to John Libbert, who offered to measure his rear axle for me. I should have replied to the group to say a couple of members have already sent me the dimensions I need. Thanks to all. David Cameron

[cameron@magma.ca]

Years ago, I replaced all the bearings and set up the crown and pinion meshing as per the Brown Book.This axle has not run under load since then. Several months ago, I drained the oil, and now I find there is 8 or 9 degrees play at the pinion shaft. This seems excessive to me, and I expect it would result in serious clunking noises, even if I remember to put oil in before driving. What's an acceptable amount of play at the pinion shaft? Any pointers on what to look for when dismantling the axle, and on what's required for a proper rebuild? David Cameron

[David Cameron]

I'm replacing the pinion and differential ball bearings with tapered roller bearings. With the brass cages eliminated, is their any good reason not to use GL-5 oil? Or, to put the question another way, does GL-4 oil have any advantages in this application, other than a less agressive attack on copper alloys? David Cameron