Dual Case Rear Adapter Plate Bearing Bad? - TTORA Forum
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post #1 of 278 (permalink) Old 10-30-2013, 08:11 AM Thread Starter
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Dual Case Rear Adapter Plate Bearing Bad?

So, my dual case setup is starting to make noise. It sounds like someone rattling a chain. My buddy, Dylan, had these exact symptoms on his 4 Runner dual case setup. His problem turned out to be the bearing on his rear adapter plate... it lost two of the ball bearings.

My case is an Inchworm, his is Marlin. We both bought our cases within a month of each other last year. Has anyone else had a bearing issue with their cases? Does anyone know if this is a common problem?

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #2 of 278 (permalink) Old 10-30-2013, 11:36 AM
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Maybe you're having this same problem..
https://ttora.com/forum/showthread.php?t=198729

99 Single Cab 2.7. Finally SAS'd and sitting on full width Toyota axles.
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post #3 of 278 (permalink) Old 10-30-2013, 12:12 PM Thread Starter
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Wow, my symptoms are just like what Fj fowdie described... Plus, Dylan lost a couple of ball bearings when his Marlin case went. Maybe I'll check in the NorCal section to learn more...

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #4 of 278 (permalink) Old 10-30-2013, 12:25 PM Thread Starter
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And thanks for the lead, Scuba.

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #5 of 278 (permalink) Old 10-30-2013, 05:38 PM
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Not a problem. Make sure to update here whenever you did the issue with your setup.

99 Single Cab 2.7. Finally SAS'd and sitting on full width Toyota axles.
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post #6 of 278 (permalink) Old 10-31-2013, 11:39 AM Thread Starter
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^Will do. I ordered a new bearing and will tear into it on the 8th.

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #7 of 278 (permalink) Old 11-01-2013, 08:25 PM
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Tear it apart first then order parts. It could be anything from a bad bearing to a loose clip. My lefty was making a crazy grinding sound, i pulled off the drain plug and found bits of c clop attached to it. So drain the fluid and see if anything comes out. Could be something very simple. If you need any help let me know i have built 4 crawl boxes and a lefty. Theres not much too them. I dont know if you built yours, if not you need a pair of huge HEAVY DUTY c clip pliers to get the c clip off the crawl box main coupler.

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post #8 of 278 (permalink) Old 11-01-2013, 09:41 PM
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Gl with that man. The cases are very easy to disassemble but like i said in my thread check the fluid first when i first filled mine it was good to go. Drove all the way to LA, wheeled big bear then drove back only to notice a noise. I didnt know the reduction box drained gear oil into the sealed section of the transmission so i was running very low on oil.

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post #9 of 278 (permalink) Old 11-04-2013, 07:50 AM Thread Starter
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Thanks for the info, you guys. I'll be sure to drain and refill my oil. The only reason that I suspect the bearing is because there was no sound at all then, instantly, there was noise. We'll see how that turns out on Friday...

I'll probably be posting up pictures with questions on this thread!

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #10 of 278 (permalink) Old 11-05-2013, 10:43 AM
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Also if you do have to change the bearing, or any bearings in the case, you will need access to a press.

2002 Ext cab TRD v-6, crawler and lots of dents.
That which does not kill me postpones the inevitable.
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post #11 of 278 (permalink) Old 11-05-2013, 12:42 PM
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Damnit. Please update, I have the same exact sound. Comes on at about 3rd gear, and sounds like a loose shifter..

-Phill

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post #12 of 278 (permalink) Old 11-06-2013, 06:42 AM
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Man phil you have had some shitty luck with you setup havent you!

2002 Ext cab TRD v-6, crawler and lots of dents.
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post #13 of 278 (permalink) Old 11-06-2013, 09:13 AM
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Tell me about it. Gear oil looked fine from the top when I redid my sister linkage, and it's been making the noise now for about 3 months

Hi, my name is Phill, above are things I say
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post #14 of 278 (permalink) Old 11-06-2013, 12:17 PM
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Is the shifter roll pin rubbing on the gears? I had that happen when I tapped it in too far. Do you have that anti chatter sproket on your main gears? I had one and it rubbed on the adapter plate, i pulled it off and no more rubbing noise. Now the gears just chatter like crazy at low rpm/gear, and the gear noise is louder overall.

2002 Ext cab TRD v-6, crawler and lots of dents.
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post #15 of 278 (permalink) Old 11-06-2013, 01:26 PM
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This noise is not constant with rpm. Ill try to get a better video, it's a hard noise to describe.

Hi, my name is Phill, above are things I say
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post #16 of 278 (permalink) Old 11-07-2013, 12:29 PM Thread Starter
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Quote:
Originally Posted by NorcalPR View Post
Damnit. Please update, I have the same exact sound. Comes on at about 3rd gear, and sounds like a loose shifter..

-Phill
I'll start digging into my setup tonight, so I'll update the thread when I find out more.

To hold you over... here's what my friend Dylan found when he had the same sound.

http://threeg4runners.freeforums.org...er-t37-40.html

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #17 of 278 (permalink) Old 11-07-2013, 05:34 PM Thread Starter
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I just drained both my t-cases. Both came out totally clean. No chunks, no shavings... nothing. I'll pull everything apart tomorrow.

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #18 of 278 (permalink) Old 11-07-2013, 08:15 PM
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Maybe the balls are in the rear adapter plate...

Anxiously awaiting...

Hi, my name is Phill, above are things I say
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post #19 of 278 (permalink) Old 11-08-2013, 09:31 AM Thread Starter
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^That's where my buddy found this... caught in the rear plate.

Also, I found my first issue. All 4 bolts on my crawl box support are either loose or missing. Do you think this could be causing the noise?






'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #20 of 278 (permalink) Old 11-08-2013, 09:51 AM
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For sure! Mine would always rattle loose and fall out until i red loctited them. The truck would make all kinds of weird resonence and subtle vibrations. Also check the driveline bolts for tightness. I would start with the bolts before tearing the case apart.

2002 Ext cab TRD v-6, crawler and lots of dents.
That which does not kill me postpones the inevitable.
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post #21 of 278 (permalink) Old 11-08-2013, 10:46 AM
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X2

Hi, my name is Phill, above are things I say
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post #22 of 278 (permalink) Old 11-08-2013, 07:43 PM Thread Starter
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Here's the real smoking gun:



Looks like a bad bearing?? (Luckily I already bought the replacement!)

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #23 of 278 (permalink) Old 11-09-2013, 07:01 PM Thread Starter
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So, the truck is all together now. With the new bearing in there, the cases are quiet and smooth. Hopefully they will be leak free, like they were before.

'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #24 of 278 (permalink) Old 11-09-2013, 07:18 PM
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Do you have the dimensions of the old bearing (exact dims)

Maybe I can find a better replacement.

Hi, my name is Phill, above are things I say
W6FTW

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post #25 of 278 (permalink) Old 11-10-2013, 12:01 AM
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This is similar to what i saw



Apparently this is common

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post #26 of 278 (permalink) Old 11-10-2013, 08:15 AM
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Thats crazy! I would send those pics to marlin crawler, perhaps they have a supplier issue.

2002 Ext cab TRD v-6, crawler and lots of dents.
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post #27 of 278 (permalink) Old 11-10-2013, 02:35 PM Thread Starter
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Quote:
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Do you have the dimensions of the old bearing (exact dims)

Maybe I can find a better replacement.
I'll try to get you some measurements this week. I know that Marlin calls this their "proprietary" double row bearing and says that they have it custom made for dual case setups....

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Thats crazy! I would send those pics to marlin crawler, perhaps they have a supplier issue.
Quote:
Originally Posted by fj_fowdie View Post
This is similar to what i saw

Apparently this is common

Here's my theory. I think that the indents in the race line up from time to time. If there is wear, or any out of tolerance spec on the steel ball or the indent in the bearing, the ball pops out. Check it out. I actually was able to push the ball back into it's spot. I can actually spin the inner race and capture the ball inside...


'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #28 of 278 (permalink) Old 11-11-2013, 12:07 PM
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Yep,I noticed that too. That's why I want to find a different bearing

Hi, my name is Phill, above are things I say
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post #29 of 278 (permalink) Old 11-11-2013, 03:26 PM Thread Starter
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Hey Phill,

Here's some quick measurements for you. Let me know if you want me to get you the thickness as well.




'96 3.4L, 5Speed, Toytec 16" coilovers with Tundra Bilstein 5100s, Light Racing UCAs, Alcan Orbit Eye Leafs with 12" Bilstein 7100 short Bodies, ARB rear locker, 33x12.5 Duratracs, CBI sliders, Bushwacker fender flares, self made front bumper, M8000, Vision X 6.7" lights with Morimoto HIDs, full skids, Inchworm dual case setup - 15 clocking

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post #30 of 278 (permalink) Old 11-11-2013, 07:12 PM
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Yes, thickness too please

Hi, my name is Phill, above are things I say
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