Troopy 5th gear pop-out

Submitted: Friday, Jul 15, 2005 at 05:55
ThreadID: 24736 Views:4842 Replies:4 FollowUps:2
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Hi there,

My '86 Troopy wants to pop out of 5th gear occasionally.
I knew this was a potential problem with this car but how serious is it?

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Reply By: Truckster (Vic) - Friday, Jul 15, 2005 at 08:03

Friday, Jul 15, 2005 at 08:03
serious enough to pop out of gear.... Thats pretty much all that will happen, but things will get worse over time...
AnswerID: 120464

Follow Up By: Member - Davoe (Widgiemooltha) - Friday, Jul 15, 2005 at 21:18

Friday, Jul 15, 2005 at 21:18
yep, My old camper used to do it and 50k later it was maybe a bit worse but I wasnt holding my breath for it to go. Wouldnt pop out while driving just when slowing with foot off the load pedal. Give us a ring when the gearbox goes bang - I wont be waiting for the call.
FollowupID: 375656

Reply By: Kiwi Ray - Friday, Jul 15, 2005 at 09:03

Friday, Jul 15, 2005 at 09:03
Hi Folks
Can anyone tell us why this happens with the 78# as it does not seem to be a problem with the 80#. I did think that it was the same gear box.
AnswerID: 120469

Follow Up By: Member - DOZER- Saturday, Jul 16, 2005 at 17:50

Saturday, Jul 16, 2005 at 17:50
Hi Ray
Toyota use all sorts of boxes in their cruisers, i believe your 78 will have an r151 prado gearbox if it is a 1hz, and a h150 if it is a t/d or 4.5...thats thesame box as an 80.
The 75's use the old h55f as in the 60 series, and all of them had this problem around the 1985 models from wear on the shaft or wont blow up, but it is annoying.
I dont know what the prognosis is for yours Ray, havnt had much to do with the r151, but it is a t/d surf box aswell as a supra turbo box, aswell as a 1hz 105 series box, and probably a v6 hilux box aswell, so start looking for a nice used one...or ask away on www.lcool .org
FollowupID: 375764

Reply By: lazylcd - Friday, Jul 15, 2005 at 22:09

Friday, Jul 15, 2005 at 22:09
my BJ70 shorty did it too, started popping out intermitantly, then all the time, then crucnched like a mother every time i tried for 5th, then refused to go in, $2200 later gearbox rebuild, then i bought the NISSAN ;oD

AnswerID: 120579

Reply By: Toy_Hilux - Saturday, Jul 16, 2005 at 21:12

Saturday, Jul 16, 2005 at 21:12
My old 84 Hilux had this same problem as well as a mates troopy and my parents 60 series. Once I had the gearbox rebuilt with heavier gears, we had no more problems. I was also informed that the 5th gear is such that it is in effect, just an overdrive gear and therefore should not be used in towing applications. This is due to the fith gear being on a seperate shaft to the other gears and is also a lighter gear and shaft. The same can also be said about the reverse gear also. Don't let the gearbox go too long before rebuild as the fifth gear can let go and cost more to repair, like what happened to mine. Since then I have owned and 80series LC and 95 lux and still do not tow anything in fifth gear. No more worries now. Also find that since the motors rev higher towing instead of labouring, I also get better fuel economy. Proberbly due to the fuel burning properly instead of going straight through unburnt.
AnswerID: 120682

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