Gearbox / Transfer case filler plug holes.
Submitted: Tuesday, Feb 07, 2006 at 08:39
ThreadID:
30509
Views:
3537
Replies:
8
FollowUps:
1
This Thread has been Archived
PJ73
Hi. Investigating oil leaks under my 1985 BJ73 Landcruiser, I note that a previous owner has removed the plugs from the filler holes in the gearbox and transfer case, and connected them together via a plastic tube.
Both the caterpillar clips used to attach the tube were loose so this was a source of oil drips, easily fixed. But the tube is vulnerable to being snagged by branches or rocks, and I'm inclined to restore the original plugs.
HOWEVER someone must have gone to this trouble for a reason. Does anybody know what it might be, and if it's a good idea?
PJ
Reply By: theshadows - Tuesday, Feb 07, 2006 at 08:55
Tuesday, Feb 07, 2006 at 08:55
This is a standard after market fix bypass line for a blown transfer case seal. This is very common on LC models up to the 80 series. the seal of your transfer case is blown and it pumps th oil up out of it into your gear box. This tube allows the oil from the over full gearbox to flow back to the transfer box and stops it from running dry and blowing up.
Go to pirtek and get a half inch line , 2 90degree bends and 2 adapter plugs for your gear box. These are all off the self items and quite cheep. It will cost you about $90. Beter still they are quite damage proof and look professional.
When you connect the new line up make sure all of the line is below the gear box filler level for it to work properley.
shadow
AnswerID:
153546
Reply By: PJ73 - Thursday, Feb 09, 2006 at 13:04
Thursday, Feb 09, 2006 at 13:04
Ray, this is good info. It opens a bit of a can of worms for me though, and I'm sure you didn't expect to get into a whole bunch of queries when you offered your advice.
However, here's what bothers me. If the oil for Transfer Case and gearbox is incompatible, how can it be that the tube addition is such a
well known after market fix? Wouldn't all the people who fitted one find that their gears became difficult to change? (Incidentally no probs yet with the gears on
mine).
AnswerID:
154063
Reply By: PJ73 - Wednesday, Feb 15, 2006 at 16:08
Wednesday, Feb 15, 2006 at 16:08
Hi, thought I'd round out this string and say what I ended up doing. I called the Royal Automobile Association here in
Adelaide and took advantage of their technical advice service (for members). Their rep (Mark) looked up the oil specified for the gearbox and transfer case of my model and it was the same. He hadn't heard of the extra slippery oil theory and said that he'd recommend the bypass pipe even if the seal was good, because when it does 'go', the first some people know about it is when their transfer case blows up. That's if they're not lucky enough to have it spotted during a service.
So I'm looking in to the Pirtek steel pipe mentioned earlier to replace my vulnerable plastic one.
Thanks to all for their input.
PJ
AnswerID:
155163