Toyota R151F gearbx

Submitted: Saturday, Jun 25, 2005 at 17:33
ThreadID: 24172 Views:9442 Replies:4 FollowUps:1
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I own a toyota troopy 99 HZJ78R which is fitted with a R151F gearbox and at 103000k's it got stuck in 5th gear ( I did manage to get it out) and now it is going to cost me $$$ to get it repaired. The bad news ( so I have been told) is these gearboxes are bad news when installed in cruisers as they often fail and will continue to do so.......Has anyone else had the same trouble and what did you do and how is it going....because I believe I have a very good troopy except for the gearbox....any sugestions....please
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Reply By: ToyMotor - Saturday, Jun 25, 2005 at 18:50

Saturday, Jun 25, 2005 at 18:50
I have a 2001 78RV with 95,000 on the clock - your news depresses me! I understand this gearbox has a problem with the output shaft, toyota now have a replacement shaft which is stronger (I bet that's real cheap, too!). I've never seen one stripped down, but other posts in this forum suggest the old one is a two-piece shaft. I find it hard to understand how it can be in two pieces, but as I said, I've never seen one in bits.

As far as a suggestion goes, I'd say do it yourself and save a lot of money! They're not too complicated, just big and heavy....

Good luck!

ps Whereabouts are you?
AnswerID: 117443

Follow Up By: Phillydom - Wednesday, Jun 29, 2005 at 18:38

Wednesday, Jun 29, 2005 at 18:38
I live in Australind in Western Australia
FollowupID: 373296

Reply By: Member - DOZER- Sunday, Jun 26, 2005 at 17:55

Sunday, Jun 26, 2005 at 17:55
The prado gearbox (r151f) was used for its favourable ratios and good shift characteristics....the older 75's run a 5 speed thesame as in the late 60 series, which had problems with the input gear and shaft of the transfer aswell as a weak 5th gear...the strongest setup is what comes with the 80 series gearbox called the h151f....these are still used in the t/d 100 and v8.
If you have a turbo and heaps of accessories (weight) and want to keep the cruiser a while, have a think about getting one of the 80 boxes/part time transfers out of a dx 80 series fitted....they can be got fairly cheaply because they arnt a hot seller.
AnswerID: 117552

Reply By: Member - DOZER- Monday, Jun 27, 2005 at 15:46

Monday, Jun 27, 2005 at 15:46
Check auction 4558218931 on ebay...92 model 5 speed and transfer with 3 months warrenty from a dismantler in melbourne...$1650...this is the heavy duty one, but as i said b4, they do have their problems...
AnswerID: 117734

Reply By: Phillydom - Tuesday, Jun 28, 2005 at 23:59

Tuesday, Jun 28, 2005 at 23:59
news this time a brand new gearbox is being fitted to the troopy and it comes with a modified output shaft ( the sleeve is fixed to the shaft) and it also comes with a 12 month waranty. Plus I had them replace the rear main seal and instal a new clutch( I smoked the last one up when it got stuck in 5th gear) so it should last at least another 100,000k' about a drain on the finances but 4wd is just so much fun.
When I saw inside the old box( which had never been apart before) it did not look good at was pretty stuffed....cheers
AnswerID: 117995

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