Yet another problem with BJ74

[Mick]

I noitced a slight whining sound when in four wheel drive, nothing major, only I had not noticed it before. When I got home I noticed that fluid was being ejected through the rubber power take off lever housing and into inside of the vehicle. It looks like brake fluid.


Does anyone have any idea what the problem might be ?

Thanks

Mick

 

[crushers]

seal gone between the tranny and the transfer woth too much fluid now in the t/case and being forced out...
the whine is the tranny low on fluid...
just my guess
cheers

 

[Mick]

Hi Wayne. I have recently replaced that seal. This time there is no signs of oil underneath the vehicle whatsoever, just the fluid coming in through the transfer lever opening. I am sure it is not gear oil, it's very thin, just like brake fluid





PS I have not forgotten the testimonial.

 

[lowenbrau]

Clutch slave?

 

[Mick]

The clutch slave sounds a possibility. Do you know where it's mounted ? I would take the skid plate off to take a look, but it's -50 with the wind chill at the moment.

 

[crushers]

clutch slave is on the bell housing...
not sure but i would check the level of the fluid in the t/case just to be safe...
if the clutch slave was that far gone so would you clutch pedal...
cheers

 

[Mick]

I will certainly check it, I have to take the skid plate off in any case.

 

[Stone]

You should be able to see the slave cylinder without having to take off the skid plate. Mine went too. Seems to be a common enoug problem as water will collect at the lowest point in the system if the fluids were not flushed and changed over the years. Slaves easily available at Toyota.

But check your tranny and t-case fluid levels as suggested in the above post also as that noise needs investigating.

 

[Mick]

I have just checked the slave cylinder and there is no problem with it. I found the gap between the skid plate and the tranmission etc was filled up with a solid block of ice, snow must have got jammed in there when I was ploughing through the drifts about a week ago.

There is no sign of leakage anywhere at all, it looks nice and dry around the take off lever, but the pivot linkage at the bottom of the rod does have a little fluid on it.

I checked the transfer and transmission fluid levels and they are both fine apart from the fact that the oil is not fluid, it's more like extra thick grease. Since it has been below -30 overnight I have had to start the vehicle with the clutch pedal depressed and then release it VERY slowly or the engine will stall. After warming up for about fifteen minuites it's fine.

I'm mystified as to what the problem is, there is still some fluid on the floor mat on the passenger side and it certainly is not water.

The engine is warming up as I type, I will take it for a drive and see what happens.

 

[crushers]

i would suggest DO NOT release the clutch slowly since there is a possibility of burning the clutch. sit with your foot on the clutch till the engine is running smoothly then let the clutch out normally. also change your fluid to 80/90 delo preimium or go with a full syn gear lube.
dumb question:
you didn't spill something on the floor, did you?

 

[Stone]

Sheldon and Greg told me about a cold weather trick that people use to help their tranny/t-case fluids warm up a little on really cold startups. Put your t-case into neutral and than put your tranny into gear as you warm up your truck. As the engine idles it will turn the gears in the tranny and t-case and help circulate and warm up the fluids a little. Right, Wayne? I have found my shifting VERY ratchety if I don't do this in colder weather.

 

[Radd Cruisers]

Did you have the tranny rebuilt recently when you replaced the seal?

If so there could be some tolerence problems causing that much drag through the gear box.

Otherwise excessive gear wine is and drag is due to warn bearings throughout the gear box.

We rebuilt several H55s and in one case my buddy could not believe how much better it shifted. Plus he was unable to hear his wife speaking to him in the cab of the truck as the gear wine was so loud(maybe that was a good thing?), cab noise is almost nil now.

The gears in the H55s are of very very high quality and after 400000Km I can still see factory machine marks on them. A very good friedn who rebuilt many chevy transmissions commented on the quality of the gears.

 

[Mick]

i would suggest DO NOT release the clutch slowly since there is a possibility of burning the clutch. sit with your foot on the clutch till the engine is running smoothly then let the clutch out normally. also change your fluid to 80/90 delo preimium or go with a full syn gear lube.
dumb question:
you didn't spill something on the floor, did you?

Just got back and checked the fluids again, the transmission and transfer are not overheating and everything is fine.

I did not spill anything, what I think happened is that because I went on a long journey some of the ice had time to melt and the water got blown directly up the PTO lever and into the vehicle as it could not blow away to the rear as it was blocked solid with ice. I think it must have carried some oil in with it from the top of the skid plate. It was coming in like it was under pressure.

I think I will have to change the oil as you have suggested, it's just too bloody cold here.

 

[Mick]

Did you have the tranny rebuilt recently when you replaced the seal?

If so there could be some tolerence problems causing that much drag through the gear box.

Otherwise excessive gear wine is and drag is due to warn bearings throughout the gear box.

We rebuilt several H55s and in one case my buddy could not believe how much better it shifted. Plus he was unable to hear his wife speaking to him in the cab of the truck as the gear wine was so loud(maybe that was a good thing?), cab noise is almost nil now.

The gears in the H55s are of very very high quality and after 400000Km I can still see factory machine marks on them. A very good friedn who rebuilt many chevy transmissions commented on the quality of the gears.

I just replaced the seal. The whine is not exessive, in fact I could not even notice it this morning. There is a bit of a "buzz" from the gearbox, sounds a bit like a bad bearing, but maybe it's just me being paranoid, I have to make sure the windows are wound up tight ,and listen hard in order to hear it. It shifts just fine, like new.

 

[Mick]

Sheldon and Greg told me about a cold weather trick that people use to help their tranny/t-case fluids warm up a little on really cold startups. Put your t-case into neutral and than put your tranny into gear as you warm up your truck. As the engine idles it will turn the gears in the tranny and t-case and help circulate and warm up the fluids a little. Right, Wayne? I have found my shifting VERY ratchety if I don't do this in colder weather.

I have tried this a couple of times but it does not seem to make a difference with my truck. As long as I leave it ticking over for about fifteen minuites it is not ratchety at all. Anything less than that and it is .

 

[Mick]

Panic over. I'm a happy boy again

 

[crushers]

if you need to struggle to hear the tranny then ignore it, when you can hear it over the radio then you have a problem worth looking into...
okay so i am exagerating now but seriously, i see too many people dumping tons of needless money into their rigs when the rig would be fine for years to come without any ill side effects...
glad you have found the problem.
cheers

 

[Stone]

Buzz on the gearbox could be the PTO lever shaking and making some noise. Mine does that...I have to look into rubber bushings that I heard someone else has used to successfully cure the noise. Bloody annoying listening to that thing when you don't have the radio on. Almost enough to make me swap out my PTO for a factory 24v electric.

 

[Mick]

I don't think it's the PTO lever though I can see that it could easily rattle a bit. If I put some sideways pressure on the gear stick it amplifies the buzz a little. As I said before it's probably just me being paranoid after cooking the transmission when I first got my cruiser. There is no major noise and everything works fine.

I happened to glance at the instrument when I was out on the highway today and noticed that the oil pressure was way up on what it normally is, the needle was three quarters of the way up, whereas its normally under the first mark. It stayed there for about ten minuites and then slowly went down to it's normal position. I think the contacts on the sender could do with cleaning up as it failed altogether last week but started working again when I gave the wires a wiggle. I will take a look tomorrow.