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Stats: 1,862,943 members, 3,735,318 topics. Date: Saturday, 19 August 2017 at 07:47 PM
Nairaland Forum / Nairaland / General / Car Talk / Rebuilding My '13 Pin' (toyota U151E) Transmission (32832 Views)
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 8:08am On Jul 20, 2016|
I eventually shipped an oscilloscope and hooked it up to SL2 (this is the solenoid, whose hydraulic circuit was giving me wahala). Because I know that solenoid performance codes could be misleading, there was need to probe deeper. Let me not lie, I DID NOT WANT TO DO ANY MECHANICAL JOB ON THIS VEHICLE IF POSSIBLE. Call it truth denial, and you wont be wrong.
The purpose of this test is to exonerate or nail the ECU! I was preparing to buy a brand new ECU if this test failed. Wired up everything and the moment of truth....
The scope showed clearly that the computer was doing its job! The first picture shows what the computer is telling the solenoid right from ignition going on. You will notice the duty cycle is close to 50:50. In that state, it is considered on. Note that this solenoid is a PWM solenoid so is never off or on. It can only be close to off, or close to on. When the computer strategy commands 3rd, this solenoid is commanded off so that it can direct pressure to the desired circuit (it is a normally closed solenoid).
There is another that shows how the waveform looks like with much higher throttle pressure. That one shows the on phase at about 10:90. I am not able to find the frame again
So with this, I know the valve body needs some work; period!
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Inception(m): 8:13am On Jul 20, 2016|
Take it from me!
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 8:27am On Jul 20, 2016|
Once again, I pulled out my other valve body that failed woefully. By the time I was returning the vehicle to my mechanic to remove the failed valve body that January, the transmission was severely acting up - banging on engagement, flaring, binding etc.
On tearing this guy apart, what I saw in the lower VB was shocking! Most of the valves were sticking. The clutch application control valve was married to the bore. The 4-5 valve was so sticking it took 30 minutes of very meticulous picking to get it out! Only the primary pressure regulator valve was free. It was not that bad when I worked on it earlier.
Surprisingly, all the upper VB valves were free! Well, that points to one thing - the filter failed to do its job somehow! That is where the fluid gets to first, before going 'upstairs'.
This time, I was fully prepared for any dirts hiding anywhere. After pulling out the valves, the cleaning commenced. Valves' cleaning, bore cleaning using power tool, and clearing everything with compressed air.
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 8:57am On Jul 20, 2016|
Now, this is a very interesting part of the repair - Solenoid cleaning!
To be sure the valve body is absolutely clean, the solenoids must be clean. In being clean, I don't mean their valves, but the pintles! They reside in the coil bore, and have the tightest tolerance! Dirt there will cripple the transmission. They have lube only, unlike the valves that face pressure that will help dislodge any dirts. Now, one way around a sticking solenoid is to replace it with new, but it has been proven again and again that no aftermarket comes close to OEM. They are also pricey (who will pay 40k for one new solenoid?) If you have the means, clean them. Those solenoids HARDLY die electrically. Thankfully, these ones do not have bushing so it is just the labour in making sure they are clean internally.
Below is a solenoid opened up for cleaning. This is a sure remedy for sticking solenoids. 100%!
To be continued....
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 8:57am On Jul 20, 2016|
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by MPVGoddess: 4:40am On Jul 21, 2016|
Well I don't but that product seems to the gold standard in cooler line cleaning hence my suggestion.
Keenly following your adventure
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 8:34am On Jul 21, 2016|
Kooler Kleen is okay, but not the gold standard. The gold standard is the hot cooler line flusher. When I grow up, I will buy it - costs starts from 750k!
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 8:55am On Jul 21, 2016|
Before I conclude, let me say that I was forced to undertake this quickly because my transmission was beginning to fail.
The problem degenerated from 2-3 flare to sluggish 1st.
Then there was 3-2 clunk
Then came binding in 2nd, which was very severe when cold. Once 2nd is commanded, it would be as if the brakes were being applied fully and released in quick succession. To reduce that, I would need to let the vehicle get warm, and then perform garage shift. . Nothing wears a friction faster than a bind.
Then finally lost 1st and 2nd gears. The vehicle will start in 3rd, even though the computer always commanded it properly. It would also not respond correctly to scan tool commands. Then I knew I had to do something quickly before I would be forced to drop the transmission, to attend to clutches burnt beyond use.
One more thing - I found my filter seal broken. Replaced with a new one.
In summary, I repaired the valve body; major additional work being on the solenoids. A lot happened in working on the solenoids, but I chose to leave it out so I can close this endeavour with this post. If anybody has a question, ask.
Put the valve body back, cleared adapts, warmed it up, performed garage shift, and took it for a test. It went straight through all the gears with silk shifts, to my pleasant surprise! I had expected it to start relearning. I have driven a bad transmission for so long I am yet to get used to a working one.
So brethren, I have overcome the notorious '13 pin'!
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by MPVGoddess: 3:50pm On Jul 21, 2016|
Kooler Kleen is gold standard for the poor like me.
The hot cooler line flusher is gold standard for the rich unlike me.
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by GAZZUZZ(m): 7:46am On Jul 22, 2016|
this movie haf not finis o!
We must still test the gear you rebuilt
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 9:14am On Jul 22, 2016|
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by mastro: 7:02am On Jul 24, 2016|
Bro you are an inspiration and a true engineer.
Well done and thank you for letting us follow your progress and eventual success.
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by leuelliot: 4:40am On Jul 27, 2016|
Kashif does this rebuild apply to U151E trans that was worked on while hot?
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 6:48am On Jul 27, 2016|
Yes, but diagnosis is the first step.
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by kingreign: 7:57am On Jul 27, 2016|
Chief good morning,
Pls can I get your number?
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 8:39am On Jul 27, 2016|
Oga PM me. You know say I dey vex for you and some other Ogas for here...
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by OrthoDude: 1:39pm On Jul 28, 2016|
Dude, don't let your acquired skills and tools go to waste. Start a transmission repair service, take jobs on your own terms and charge a deluxe fee .
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 7:30pm On Aug 01, 2016|
Proposal on the table.....
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Ladipodeal: 5:40am On Aug 05, 2016|
@ Kashif Any special precaution to be taken in changing the gear oil in 2GR FE Toyota Sienna engine. I intend Toyota WS (Japan) oil. It is in a gray 4 liters can.
Presently the gear oil is a bit dark and no burnt smell, the gear selects well. Just routine maintenance
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 6:16am On Aug 05, 2016|
Just make sure it is done when the transmission is cold. If this is hard to achieve, heat the replacement ATF before application. Filter replacement is advised.
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Ladipodeal: 8:31am On Aug 05, 2016|
Kashif:Doubt if I can trust my mechanic to do the filter replacement. He mention loosing the gear sump to replace the filter.
Where can I get the original filter? Can it be done by you and what will the price be?
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 1:11pm On Aug 05, 2016|
The original filter (Filtran) is excessively expensive, and is not worth the price. Will you pay 15k or more for a filter? Filters are not hi-tech part so, there are many other good alternatives. I use one of those.
Meanwhile, they are all made in China now, including the OEM, apart from very few. I still have one filter left, and more coming in next week. I can do that for you if necessary. PM me.
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Akpo1daye: 4:38pm On Aug 09, 2016|
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|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by kingreign: 7:24pm On Aug 09, 2016|
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Stancity(m): 1:04pm On Aug 10, 2016|
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|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by kazum(m): 12:06pm On Aug 19, 2016|
Good job, Oga Kashif.
I need your help. I have Toyota Camry 2005 with 13pin gear.
The issue start this way. I discovered the ATF was leaking under the car and my mechanic told me that we need a transmission technician to check than the transmission oil is already low. (But the car is still working fine)
I contacted one around and the guy told me that he need to change the pump and the oil. Since the transmission oil level is already low he suggested we add oil for him to take it to his workshop so he buy Abro oil.
Now the guy has change the pump and the oil. He claim he used recommend Toyota transmission oil.
The problem now is that gear will work fine when the car is cool but only the reverses gear work when the transmission is Hot.
Presently the car can't move long distance.
Please your advise is highly needed
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Kashif(m): 12:55pm On Aug 19, 2016|
A couple of things could be responsible for a no forward movement when hot, but most times comes from a clogged filter. You start driving and the clutch materials start to gather at the filter intake side. This continues until it is completely blocked, and cant breath anymore. You allow it some time, and the materials drop; the cycle starts again.
Another could be sticking valves and/or solenoids.
With your case, are you sure you don't have a defective pump installed? Why would he replace your pump instead of the seal? The only way to confirm this is to hook up a gauge at the ports and see what you have.
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by kazum(m): 1:47pm On Aug 19, 2016|
Please how can we hook up. I am in Lagos.
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by gbadaniyi(m): 12:16pm On Aug 27, 2016|
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|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by dan6019(m): 11:47am On Sep 10, 2016|
I have a Toyota Prado, 2003, all wheels. My transmission oil leaks from under the vehicle. It seems it is between where the gear is coupled to the engine and I am not just comfortable taking it to a mechanic without knowing what's wrong. I top it once a week, the transmission has no problems whatsoever. Thanks
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Durbaubal682: 10:28pm On Sep 14, 2016|
Hello every one, how are you?
|Re: Rebuilding My '13 Pin' (toyota U151E) Transmission by Evasmil4(m): 4:40am On Oct 28, 2016|
good job Kashif, keep it up
more grease to your elbow.
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