transfer to gearbox "pumping?"
Submitted: Wednesday, Aug 23, 2006 at 21:40
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Rono
hi all
can anyone tell me if this occurs in 2wd or does the truck need to be in 4wd ?
and if it does happen in 2wd how long would it take to increase gearbox oil level? the truck is a hzj 75 troopy . Thanks
Reply By: Member - Phil G (SA) - Wednesday, Aug 23, 2006 at 22:24
Wednesday, Aug 23, 2006 at 22:24
Sounds like you don't know yet whether you have a problem!
The "pumping" was very common on the old 40and 55 series Landcruisers; occurred less often with the 60series, and I haven't heard much about it with the later models. Being in 2wd doesn't stop it. The fix used to be to fit the double lip seal from the automatic trans models, or fit a hose between the fillers.
"how long does it take" - depends on the vehicle. I used to drain the excess out of the gearbox, and topping up the transfer case on my old 61series every 20,000km - I couldn't be bothered fitting a hose between the fillers.
AnswerID:
190638
Follow Up By: traveller2 - Thursday, Aug 24, 2006 at 08:08
Thursday, Aug 24, 2006 at 08:08
Agree with Phil, the auto seal fixes it, on later trucks from about 90 on it wasn't a problem as much but the seals and O rings that are fitted at the factory cause the input shaft and gears to end up dry which leads to excessive wear and eventually no drive to the transfer.
FollowupID:
448309
Follow Up By: Rono - Friday, Aug 25, 2006 at 17:08
Friday, Aug 25, 2006 at 17:08
Thanks Phil and traveller2. A mechanic at a repco service centre told me during a squillion point "safety check" that it had this problem and he could fix it for $750 this was about 2 years ago and since then have not been able to find any more oil in gear box or any less in transfer. Could it have fixed itself ? I check it every service (5000ks) "the seals and O rings that are fitted at the factory cause the input shaft and gears to end up dry which leads to excessive wear and eventually no drive to the transfer" is this even after the linking tube has been fitted? I take it if theres oil in both at the right level theres no excessive wear etc?
Thanks for all advice Rono
FollowupID:
448689
Follow Up By: Member - Phil G (SA) - Friday, Aug 25, 2006 at 18:38
Friday, Aug 25, 2006 at 18:38
Rono.
They don't magically fix themselves. Just check the oil levels when you service the vehicle and all will be fine. Gearboxes wear out on all vehicles with time - nothing you can do to stop that apart from usual servicing.
FollowupID:
448708
Reply By: Member - Stephen M (NSW) - Wednesday, Aug 23, 2006 at 22:28
Wednesday, Aug 23, 2006 at 22:28
Yep common problem with the old hilux's as
well you can buy a pipe that runs from the gearbox to the tranfer case so they even them selves out screws into the filling thread on both of them, had my internal seal done a few years ago now and so far so good. Regards Steve M
AnswerID:
190640
Reply By: Batman69 - Thursday, Aug 24, 2006 at 09:18
Thursday, Aug 24, 2006 at 09:18
I had an early HZJ75 with the same problem, I got a flexible pipe made up to connect the two filler holes that equalised the pressure between the two boxes and had no problems with it ffrom then on, the fix only cost about $60
AnswerID:
190682
Reply By: Mikee5 (QLD) - Thursday, Aug 24, 2006 at 16:56
Thursday, Aug 24, 2006 at 16:56
On my old cruiser (HJ45) I went to Enzed and started speaking, the guy knew what I wanted before I had finished explained. It is/was very common to do the hose thing.
AnswerID:
190784
Reply By: brd - Thursday, Aug 24, 2006 at 19:34
Thursday, Aug 24, 2006 at 19:34
I had the same in a 78 Range Rover. I also fitted tubing between both fillers, but got jack of removing it to check fluid levels every service. I eventually removed the plates from transfer and main box, which allowed me to drill and tap each cleanly, and fitted a smaller tubing that didn't need to be touched at
services. With Rovers reputation for oil leaks, this was a better option for me than replacing the seal between boxes.
Regards
Brid
AnswerID:
190812