A few Trak-Loc questions. - TCCoA Forums
 
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post #1 of 28 (permalink) Old 09-07-2008, 09:07 AM Thread Starter
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A few Trak-Loc questions.

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?

Last edited by tinman_72; 09-07-2008 at 10:33 AM. Reason: Another question.
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post #2 of 28 (permalink) Old 09-07-2008, 06:48 PM
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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...

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post #3 of 28 (permalink) Old 09-07-2008, 06:54 PM Thread Starter
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No, it definitely is a Trac-Lok. (3L73 88) I pulled the clutches out of it this morning.
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post #4 of 28 (permalink) Old 09-07-2008, 07:05 PM
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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.
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post #5 of 28 (permalink) Old 09-07-2008, 07:15 PM Thread Starter
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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?
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post #6 of 28 (permalink) Old 09-07-2008, 07:17 PM
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Get a pic, it may just be missing.

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post #7 of 28 (permalink) Old 09-08-2008, 04:22 AM
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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...

Last edited by Icarus; 09-08-2008 at 06:39 PM.
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post #8 of 28 (permalink) Old 09-08-2008, 06:24 AM
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Tell me the year of the ranger and I'll post up the exploded veiw.

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post #9 of 28 (permalink) Old 09-08-2008, 11:41 AM Thread Starter
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Quote:
Originally Posted by ClintD View Post
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.
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post #10 of 28 (permalink) Old 09-08-2008, 12:00 PM
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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.

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post #11 of 28 (permalink) Old 09-08-2008, 12:04 PM
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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.
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post #12 of 28 (permalink) Old 09-08-2008, 02:29 PM
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These are the two different trac loc unit's they show for that year.



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post #13 of 28 (permalink) Old 09-08-2008, 02:42 PM
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The top one looks just like a 9".

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

Thanks for posting the exploded views.

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post #14 of 28 (permalink) Old 09-08-2008, 04:45 PM Thread Starter
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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.
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post #15 of 28 (permalink) Old 09-08-2008, 05:21 PM
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That is what I was concerned with. Nice breakdown.
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post #16 of 28 (permalink) Old 09-08-2008, 10:00 PM
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Quote:
Originally Posted by tinman_72 View Post
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.

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post #17 of 28 (permalink) Old 09-09-2008, 05:12 AM Thread Starter
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Quote:
Originally Posted by ClintD View Post
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.
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post #18 of 28 (permalink) Old 09-09-2008, 03:43 PM
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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.
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post #19 of 28 (permalink) Old 09-09-2008, 03:47 PM
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Quote:
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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)

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post #20 of 28 (permalink) Old 09-09-2008, 06:32 PM
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If you notice there are dished spacers, I would venture to say these produce the spring load.
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post #21 of 28 (permalink) Old 09-09-2008, 07:42 PM Thread Starter
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Quote:
Originally Posted by _95badbird View Post
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)
Well now hold on a second. I agree with his last sentence. Not that somebody opened the diff and removed the spring and sealed it up, but that somebody put it together not knowing what he was doing and left the spring out. Then later on down the road it was taken to the junkyard.
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post #22 of 28 (permalink) Old 09-09-2008, 09:17 PM
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That's most likely what happened. Someone may have changed a bearing or axle seal and found it too hard to reinstall the spring so in the trash it went. Again the picture with the concaved dish washers is not a picture of an 8.8" because they never used that setup. The picture is of a larger truck rear, which completely different. If this is a 28 spline Ranger rear, it should have had the small E0AZ-4214-A spring. If it's a 31 spline (Explorer type) it should have had the large F3TZ-4214-A spring. Did you have shots of your rear that we could see if it's a stock Ford carrier?

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post #23 of 28 (permalink) Old 09-11-2008, 08:08 AM
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Does anyone happen to have the part number for the 31 spline side gears for the TL?

I'm doing the level 5 axle conversion, have a spare 28 Spline TL, and need the 31 spline side gears.

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post #24 of 28 (permalink) Old 09-11-2008, 08:38 AM
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The gears alone cannot swap the bore is different.
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post #25 of 28 (permalink) Old 09-11-2008, 09:15 AM
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Thanks Alan, that was the other part of the equation that I was unsure of.

That being said, is the diff case the same then, and just different bearings, etc for the larger bore, or is an 8.8 TL rebuild kit the same for all 8.8 diffs?

(Oh yeah....anyone have a 31 spline TL that they want to trade for a 28 spline?)

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post #26 of 28 (permalink) Old 09-11-2008, 09:28 AM
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All 8.8's use the same bearings. 31spline units have a larger pin typically (few 28 spline units did). The traction lock kits are pretty much the same. Some 28 spline carriers don't have room for the large spring. Axle seals are completely different from a solid axle, same goes for the axles bearings.
Newer cases use a larger seal, other than that they are all the same.
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post #27 of 28 (permalink) Old 09-11-2008, 09:49 AM
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Yes, what dirty dog said above.

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post #28 of 28 (permalink) Old 09-25-2008, 05:40 PM Thread Starter
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So I decided to go cheap. I went to the junk yard looking for a F-150 with Trac-lok for the spring. I couldn't find one so I grabbed one out of a '96 Explorer with 3.73TL.
Today I get to the part where I put the spring in and I find that there is no way that it will fit. After going through all that trouble, I find that Alan already said that it might not fit. (In post #26.)
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