Internation 175b torque converter trans issue

[Tfphill]

Hello guys. I need some help with my 175b loader. It does not have pushing power. I have to use in low range 1gear. Works good in 1st but I think it could be better.
When put in second gear position which would be 3 rd or 4th high range the drive shaft to transmission stops turning when under very little load. When at idle drive shaft turns. The torque converter preassure reads good on gauge all the time. Any advice would be good.

Same happens when in reverse. Operates in 1gear and any other gear shaft stops turning.
 

[nys]

I was told first to do on these is wash out trans screen and change filters, a lot of problems were fixed this way. good luck
 

[Tfphill]

And if the filter and screen are clean, what else could the problem be?
 

[JMS/.MN]

google "red power magazine" for another info source.
 

[Dennis K (WA)]

You first need to check your filters. Are they clean? Does it look like they have aluminum in the oil? Aluminum would be from the converter.
The gauge on the dash is generally the clutch pressure (main pressure) not converter press unless some one has added one.
If I remember right the 175B had pressure taps under the floor plate at the front of the seat frame. One for clutch press, 180-220 psi, one for converter press, 80-100psi at hi idle and one for lub press around 25psi.
These would be 1/8'' pipe thread. If they are not there then you have to go to the press regulator valve on top of the transmission to tap in, also 1/8''pipe thread. This will probably require removal of the batteries.
Let us know what you find and we'll go from there.
good luck
Dennis
 

[Fritz Maurer]

Find out what high idle RPM is supposed to be and make sure the engine is not at fault.
 

[Dennis K (WA)]

Good point Fritz, here are the specs.

HI Idle - 2650 rpm
Conv Stall - 2150 - 2300 rpm
Boost press @ conv stall w/ 3LD229 turbo - 11-15 psi
Boost press @ conv stall w/ 3LD279 turbo - 8-12 psi

Dennis
 

[Tfphill]

Thanks guys for info. The engine is not at fault for sure. I just have to check pressure of hydraulics.
 

[AJ.]

Odds on it's a weak forward clutch pack,if it drives good in reverse it suggests that the speed clutches are OK ie it is the same speed clutch that is used for forward and reverse, if its it is reversing good the torque,reverse clutch,speed clutches and steering is all good leaving only the forward clutch to have an issue.
Good luck
AJ
 

[Tfphill]

I dont think the issue lies in the transmission. The drive shaft that
comes out of torque converter housing is not turning when under
load. It just stops spinning. Looks almost as though it is slipping.
 

[Dennis K (WA)]

None of the clutches in a 175B / TD15B or C are common to F & R.
The input shaft is forward with a hi and lo clutch and an addition clutch shaft having a hi and lo is reverse. Additionally there is a sliding gear hi / lo range shaft giving the transmission 4 forward and 4 reverse gears.

The drive line should spin freely in neutral and stall in all gears, even at full rpm, as long as the tracks are not allowed to turn.

Dennis
 

[Tfphill]

I am confused now. So the drive shaft is not supposed to turn if
tracks dont turn? So when I have it in 3rd forward and the tracks
are not turning the shaft isnt turning even though there is no big
load(just the ripper down) what would the problem now be?
The torque converter or transmission?
 

[Dennis K (WA)]

Tfphill,
Sorry if I have confused you. So far without any additional info I don't think the problem is the transmission. Ether the engine is weak or the converter is slipping due to a failure or lack of pressure or excessive load on the machine.
When in gear and tracks stalled if the drive line spins you ether have a slipping clutch pack or slipping steer clutches but based on your description that is not the case.
Does it sound like your engine is laboring, working, when in gear and reved up?
Does the driveline / engine act the same in all gears?
How did the problem develop or has it always been this way?
Does it steer normally? Are the brakes applied?
good luck
Dennis
 

[Tfphill]

1- the engine sounds strong when in gear and reved. There is a slight dip in revs when put in gear
doesn't sound like its over labouring.

2- it works in 1st but feels as though it is not getting all that it
should. 2,3,4 gives problem of drive shaft not turning at all.

3.- it has pushed well before. I am not sure y this happened.
Tractor was pased down to me from my father.

4.- the steering is good and responsive.

I pulled the filter that sits above the torque converter. It look
blocked. I am not sure if this is Whatyou have referred to as
the strainer. It is a metal mesh type filter.
I also pulled the transmission filter. Looks like a paper type
filter which is located to the left side of driver sitting position
next to tranny. This filter feels kind of mooshy. I am not sure if
it is because it bad or is this normal for a paper type that is
exposed to oil.

I would also like to know if the fluid in the torque converter is
fed from the hydraulic fluid tank?

Are there any other filters that I should look for besides these
two?
 

[Tfphill]

I located the pressure taps. There are 3 lines that run to a
block at base of driver seat. I just have to get a pressure
gauge to check. Any suggestions on how to identify which line
is which?