TCCoA Forums banner

1 - 20 of 28 Posts

·
Registered
Joined
·
2,638 Posts
Discussion Starter #1 (Edited)
This is not pertaining to my Thunderbird but my Ranger. (8.8 rear end) I picked up an 8.8" 3.73 TL rear end out of a junk yard. After bringing it home I popped the cover off to inspect the clutches.
  1. There was no "S" spring. Isn't this necessary? Can I order one separately and if so is there one that is better than others? I thought I have read something about using a F-150 spring.
  2. What stacking order? I have seen several threads about the alternate stacking order for the clutches. Is this for longevity, performance or both? If they will last longer in the original order I would go with that since it is only going in a 4 cylinder truck. If I go with the alternate stacking order I have to reuse one of the old friction plates. How can you tell if they are too worn to reuse?
  3. Same question for the carbon friction kit. Is it for performance, longevity or both?
 

·
Registered
Joined
·
348 Posts
If there is no S-spring, it most likely isn't a Trac-Lok (can you see the clutches in it?)
If your going to alternate the clutches and use a F150 spring, make sure to get friction modifer even if your using syth fluid, as it will still be noisy...
 

·
Registered
Joined
·
2,638 Posts
Discussion Starter #3
No, it definitely is a Trac-Lok. (3L73 88) I pulled the clutches out of it this morning.
 

·
Premium Member
Joined
·
6,617 Posts
If it doesn't have an S spring it won't use an S spring. What year ranger it could have had the other system. My broncoII had that other system, I never took it apart to see how it worked.
The carbon clutches were designed to prevent chatter. They are no better for performance than the old design. If anything they have less surface area.
Alan
 

·
Registered
Joined
·
2,638 Posts
Discussion Starter #5
Ah. I didn't know there was an "other" system. I just assumed that whoever had it apart before left it out because it was too hard to put in or something. I know it has been worked on before because there was no cover gasket, just lots of gasket sealer.
How can I tell for sure that it doesn't need the spring?
 

·
Registered
Joined
·
348 Posts
I thought the Bronco II's had 7.5" diff's dirtydog?
My ex had one and it had open diffs in it (Dyna up front, the 7.5 out back), but was 4x4 (go figure)!
I could be wrong, it's been a little while since I've seen a Bronco let alone been under one...
 

·
Premium Member
Joined
·
1,372 Posts
Tell me the year of the ranger and I'll post up the exploded veiw.
 

·
Registered
Joined
·
2,638 Posts
Discussion Starter #9
Tell me the year of the ranger and I'll post up the exploded veiw.
The rear is out of a '93 4.0 4WD but it has already been determined that it is definitely a Trac-Lok as I have disassembled it and removed the clutches. Although, it would be interesting to see an exploded view of both the Trac-Lok and whatever this "old" style is from the Bronco II.
 

·
Registered
Joined
·
7,758 Posts
So without the S spring, what puts pressure on the clutch packs?

A 9" uses four small springs, but I thought every other Ford Trak-Lok used the S spring.

AFAIK, the tension on the spring sets up how much torque is required to let the clutches slip. Stiffer spring(s) the tighter the Trak-Lok.

But just my .02. :thumbsup:
 

·
Premium Member
Joined
·
6,617 Posts
I should have looked into it better. I don't know how the old one worked. I know it didn't lock both wheels together it transfered the power to the wheel that was spinning. Left black marks 3 foot on each side.
Alan
 

·
Premium Member
Joined
·
1,372 Posts
These are the two different trac loc unit's they show for that year.


 

·
Registered
Joined
·
7,758 Posts
The top one looks just like a 9".

On the second one, is the "dished spacer" what is providing the preload? :confused:

Thanks for posting the exploded views. :thumbsup:
 

·
Registered
Joined
·
2,638 Posts
Discussion Starter #14
Yes, thanks for the pics. Mine looks more like the second one, just a few differences:
  • Mine doesn't have the washers at the end of the cross shaft.
  • Mine doesn't have the cupped washers for the side gears. I agree with 94DD's theory that they provide the pressure in place of the s-spring. I wonder if I can still use an s-spring?
  • I don't recall any retaining clips. What do they retain?
It very well may not have worked properly in the truck that it was in. I could tell that it had been opened before because there was no cover gasket, just gobs of gasket sealer.
 

·
Premium Member
Joined
·
1,372 Posts
I could tell that it had been opened before because there was no cover gasket, just gobs of gasket sealer.

I haven't seen Ford use an actual gasket since the late 80's.

If it was black silicone then it was probably factory.
 

·
Registered
Joined
·
2,638 Posts
Discussion Starter #17
I haven't seen Ford use an actual gasket since the late 80's.

If it was black silicone then it was probably factory.
It is orange.
 

·
Registered
Joined
·
48 Posts
Those pictures is not what you have. Top is a 9" and the bottom is a 9.75' or 10.25". All stock 8.8" traction-loks have a S spring. I would say someone just removed the S spring before it hit the junkyard.
 

·
PostSlut
Joined
·
13,597 Posts
Those pictures is not what you have. Top is a 9" and the bottom is a 9.75' or 10.25". All stock 8.8" traction-loks have a S spring. I would say someone just removed the S spring before it hit the junkyard.
so tell me, why would someone right before they send their vehicle to the junkyard, take the s spring out, and install the diff back in the vehicle, seal it all up, just to remove an s spring?

sounds kinda silly now don't it?(if you have never had the pleasure of rebuilding a diff, then you will have no idea)
 
1 - 20 of 28 Posts
Top