TAT Maintenance - Toyota FJ Cruiser Forum
Maintenance Tech

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post #1 of 22 (permalink) Old 07-13-2016, 07:15 PM Thread Starter
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TAT Maintenance

Hello Knowledgable Forum Folks,

We meet again.

In less than a month, the girlfriend and I are going to tackle the Trans American Trail from the panhandle of Oklahoma to Oregon. As such, I am starting some basic maintenance to make sure everything is shipshape before our departure. My trusty steed has ~57,000 miles.

Planned Maintenance:

Oil change (happened at 55k)
Front diff fluid (happened yesterday)
Rear diff fluid (happened yesterday)
Cabin filter (happened yesterday)
Engine air filter
Transfer case fluid
AT fluid

My question to you all...What else would you recommend. Obviously I'm not going to rebuild the engine, but are there any other problematic areas that I should address and/or check before we leave?

Thanks in advance!

2012 Silver Fresco "Fanny Jane"

Demello Light Bar + 30" Rigid, 255/80-17 St Maxx, Scuba Mod, All-Pro SD Sliders, BMC, Ricochet Skids, ARB 2000 Awning
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post #2 of 22 (permalink) Old 07-13-2016, 07:22 PM
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Re: TAT Maintenance

I thought tattoos were forever......

-Proper and even air in the tires.
-Grease zerks on drive shafts.
-You could probably skip the AT fluid swap, its not as easy as simply draining and filling and not really necessary before 100K, not to mention a bit expensive, but feel free to do it if you have all the supplies and want to for peace of mind.
-Spark plugs are something also worth looking into if you haven't already.
-Visual inspection of everything underneath.

Have fun!
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post #3 of 22 (permalink) Old 07-13-2016, 07:29 PM
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Re: TAT Maintenance

I retract my previous statement, in 2010+ Toyota changed the spark plugs. They are good for 100-120K now so you probably don't need to change them. Yes it says 2007, no there aren't really any differences besides spark plugs.
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post #4 of 22 (permalink) Old 07-13-2016, 07:33 PM
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Re: TAT Maintenance

I agree with Iconic, grease the zerks on the driveshaft, and I wouldnt worry about the tranny flush until 100k. I think you are supposed to grease the driveshaft every 5k if Im not mistaken.
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post #5 of 22 (permalink) Old 07-13-2016, 08:23 PM
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Re: TAT Maintenance

I would STRONGLY recommend that you go ahead and perform the transmission flush now, at 57k miles.

The A750F transmission does have a history of problems with the torque converter lockup clutch, and it seems that regular changes of the transmission fluid (like at 50k mile intervals) will prevent the lockup clutch "shuddering" problem.

Peruse the threads on this forum dealing with "shuddering transmission" for a lot more information, and numerous sad stories.

I'll perform the fluid change at ~25K miles on my 2014, and every 50k miles thereafter. Remember that the AT has no filter, and all the clutch friction plate debris and all the other normal wear particles circulate forever, or at least until you change the fluid.

It's very, very cheap insurance to help ensure that your transmission will go 250-300K miles ....
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post #6 of 22 (permalink) Old 07-13-2016, 10:29 PM
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Re: TAT Maintenance

If I might jump in here you could think about installing a tranny cooler while you're performing the flush, it would be easier to do it now while you have the system open for the flush given the PITA it can be to add fluid and check levels.
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post #7 of 22 (permalink) Old 07-13-2016, 10:40 PM
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Re: TAT Maintenance

G'day,
I would also include
Brake fluid flush
P/S flush ( use some of the ATF from the tranny flush )
Radiator flush.

Cheers
Baz
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post #8 of 22 (permalink) Old 07-14-2016, 06:27 AM
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Re: TAT Maintenance

All FJ need a trans cooler.
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post #9 of 22 (permalink) Old 07-14-2016, 07:28 PM Thread Starter
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Re: TAT Maintenance

Thanks, everybody, for the suggestions! I'll be calling the local shop for quotes this week or next, and then weed out what I can't afford and see about doing it myself.
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post #10 of 22 (permalink) Old 07-15-2016, 10:42 AM
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Re: TAT Maintenance

Ill give you a couple of low cost solutions. Asian Zerex for coolant (yes its actually called that and its the formula for Asian vehicles). About $16 per gallon prediluted from Advance Auto or other parts chains. Drain as much as you can from Radiator and overflow tank...should get close to 2 gallons out (you might drop lower radiator hose to as much as possible). Refill/replace. Dont bother with a flush....but if you feel you need to....run 2 gallons of distilled water, heat up to operating temp and then drain. You can do that multiple times before draining that all out and replacing with the Asian Zerex You are replacing ~ 8 quarts out of the total 10.5 quarts of coolant capacity.

Transmission Fluid ...drain out what you can (likely 3.5-4 qts). Refill with Valvoline MaxLife AT (meets Toyota WS standard) and can be purchased at WalMart at less than $20 per gal. Do this at least every year going forward if you cant do a full flush. Since you haven't ever done trans fluid, you might do the same thing during the next couple of oil changes, so you can 'flush' out as much of the old fluid as possible (I believe the total trans fluid capacity with the torque converter is about 12 quarts....so with the first drain you are only removing 25-30% of the old fluid and mixing in new, then on the next change you are replacing 25-30% of the now 75% old/25% new fluid etc.)

Definitely agree with lubing the entire drivetrain (u joints, slip joints and the double cardan joints).

I would also look very closely at the serpentine drive belt and if it looks worn at all, would replace - at the very least I would ensure you carry a spare with you on the trip. Look at RockAuto for decently priced replacements from Dayco, Gates or Goodyear.
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