Prado Gearbox
Submitted: Wednesday, Dec 12, 2007 at 08:11
ThreadID:
52467
Views:
3527
Replies:
2
FollowUps:
5
This Thread has been Archived
Zodarp
Has anyone had trouble with their R150F gearbox ? Over the past few months a high pitched whine developed in 5th gear. This was most audible around 90klm/hr during overrun. I didn't pay much attention until I noticed it happening in all gears except top. We took it to the local dealer and was informed that there was indeed a problem and the transmission would have to be removed and inspected. The diagnosis indicated a possible input bearing/cluster failure. Internal inspection revealed a coating of sludge on every internal non contact surface. We had been using the recommended spec oil and was regularly changed at 40k intervals. There has always been a small amount of metal in the drain oil. The input shaft gear appeared to have some odd looking marks on the teeth. The marks looked like 45 deg lines at .5 mm etched into the tooth surface. I am not sure if the are the result of the fault or a manufacturing defect. Hopefully the needed parts arrive today and we will have the car back by. If the problem persists after the repair we will probably ask Mr.Toyota for a new gearbox.
Regards Zodarp
Reply By: Wizard1 - Wednesday, Dec 12, 2007 at 09:47
Wednesday, Dec 12, 2007 at 09:47
Zodarp,
thats all great, but can you tell us the car's history?
How old
Turbo or petrol
How many KM has it travelled before the problem started
Have you towed a van or heavy camper trailer or boat? Did you use 5th gear when towing?
It all helps...
AnswerID:
276191
Reply By: Member - Phil G (SA) - Wednesday, Dec 12, 2007 at 10:53
Wednesday, Dec 12, 2007 at 10:53
Just out of interest, Toyota stopped putting magnets in the gearbox drain plugs. I wonder whether this might accelerate wear???
On the Prados, and 79series, I replaced it with a magnetic drain plug from the rear diff.
AnswerID:
276199
Follow Up By: disco driver - Wednesday, Dec 12, 2007 at 12:48
Wednesday, Dec 12, 2007 at 12:48
Toyota now use non magnetic plugs on gearboxes.
Simple Reason:- So that no one knows how much metal is being ground off gear teeth, gearbox is stuffed before anyone notices anything wrong.
Just my opinion.
Disco.
FollowupID:
540117
Follow Up By: Member - Phil G (SA) - Wednesday, Dec 12, 2007 at 13:19
Wednesday, Dec 12, 2007 at 13:19
Hi Disco,
I was guessing it would be to save 5c on the production line :-))
I had a small chip off a tooth appear on my last oil change - gearbox works perfect. I'm glad I've got a magnet there.
FollowupID:
540122
Follow Up By: Member - Glenn D (NSW) - Wednesday, Dec 12, 2007 at 21:37
Wednesday, Dec 12, 2007 at 21:37
Hows it going Phil,
I knew I was lucky owning a Patrol, when parts break in my gearbox the pieces are so big you know they are going to stay on the bottom of the box !
Glenn.
FollowupID:
540210
Follow Up By: Member - Phil G (SA) - Wednesday, Dec 12, 2007 at 22:33
Wednesday, Dec 12, 2007 at 22:33
Going
well Glenn. Just work as usual, so I can accumulate some more leave for next year!
Just curious whether you got to the bottom of that starting problem? Any idea what the cause was?
Cheers,
phil
FollowupID:
540231
Follow Up By: Member - Glenn D (NSW) - Friday, Dec 14, 2007 at 11:45
Friday, Dec 14, 2007 at 11:45
It went away until I went to the snow later in the year. There was no one with me to do cpr on the priming pump and I managed to start it by cranking with a bit of throttle, makes me a bit of a sceptic about cpr on the pump, but makes a good story anyway. I changed the glow plugs and havent had any trouble since.
A bit funny though cause I had left it outside at work overnight on a lot of nights that I thought were colder and had no problems.
Glenn.
FollowupID:
540484