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Roper 18t Hydro

t8338ar

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#1 MH81 ONLINE  

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Posted May 10, 2015 - 07:03 AM

Only ever remember seeing one picture of these. Couldn't believe what was under the shredded tarp.
The hood is inside and busted up, the tarp has been kinda on&off it for a while.
It was parked apparently due to a tranny issue. That will be step two... Last night, she woke from slumber.

Yes, the tranny has an issue... Won't move at all, but the pump loads up like I'm pulling a big load.
Was full of a water-oil-mung mixture.
Drained and filled with diesel-10wt to flush.

So, this will be a major learning curve for me. BTW, no serial -model tag.
If anyone knows the full model number of the 18t hydro, let me know so I can look for a manual

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#2 IamSherwood OFFLINE  

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Posted May 10, 2015 - 07:38 AM

Engine sounds good.

Hopefully it's something simple in the hydro.

 

Is that deck for it?


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#3 KennyP OFFLINE  

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Posted May 10, 2015 - 07:43 AM

Alan I have 2 manuals for the 18T, one a 1978 and one a 1979. I'll get them posted in a bit for you.


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#4 MH81 ONLINE  

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Posted May 10, 2015 - 07:56 AM

Engine sounds good.
Hopefully it's something simple in the hydro.
 
Is that deck for it?

  
Yeah, and the deck is in good shape.
Haven't played with the quills yet, but the shell is good and there is only one dent in the front. At a glance anyways.

Alan I have 2 manuals for the 18T, one a 1978 and one a 1979. I'll get them posted in a bit for you.


Thanks Kenny.
I found one for an 18t, but no hydro info.
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#5 Cat385B ONLINE  

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Posted May 10, 2015 - 07:59 AM

The lower grille looks good, how bad is the hood?



#6 olcowhand ONLINE  

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Posted May 10, 2015 - 08:21 AM

Maybe the brake assembly is just frozen up??  Engine sounds sweet!


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#7 KennyP OFFLINE  

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Posted May 10, 2015 - 08:51 AM

Had to clean them up some. Here's the 1978 18T manual.

Here's the 1979 18T manual.

 

The 1978 is a Hydro. The axle looks like a Dana. Could that be a Sundstrand hydro on it?

T8338AR Rear Axle.JPG

 


Edited by KennyP, May 10, 2015 - 08:58 AM.
Added pic.

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#8 TomLGT195 OFFLINE  

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Posted May 10, 2015 - 09:21 AM

Nice sounding engine, hope the rear is an easy fix. That would make a nice plow tractor. Maybe we will see it at plow day next year?



#9 KennyP OFFLINE  

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Posted May 10, 2015 - 10:03 AM

What I don't see in the pic above is a 90° box to get from the pump (#4) to the to the motor (#3). That may be your issue!

 

It also has a by-pass valve for rolling it around (page 3 in the 1978 Manual). Check that out.



#10 EricFromPa ONLINE  

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Posted May 10, 2015 - 02:33 PM

Runs good.Pump sounds like it's building pressure fine.Does the Lift raise the deck ok? or it it really slow?



#11 MH81 ONLINE  

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Posted May 10, 2015 - 02:35 PM

The bypass valve, the PO said if he opened it, the oil would blow out the dipstick.
Don't know how that would happen or how he knew as that oil had to be from 1978.
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#12 MH81 ONLINE  

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Posted May 10, 2015 - 02:36 PM

Runs good.Pump sounds like it's building pressure fine.Does the Lift raise the deck ok? or it it really slow?

The deck lift is still manual. :wallbanging:

Something I think may be changeable.
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#13 MH81 ONLINE  

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Posted May 10, 2015 - 02:39 PM

What I don't see in the pic above is a 90° box to get from the pump (#4) to the to the motor (#3). That may be your issue!.


It's belt drive to the pump, hoses to the valve, hoses to the motor.
No 90 that I could see.

If I can squeak an hour, I may pull the motor off the front of the tranny and see if it turns. At least tell me what section the issue is in.
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#14 olcowhand ONLINE  

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Posted May 10, 2015 - 02:41 PM

What I don't see in the pic above is a 90° box to get from the pump (#4) to the to the motor (#3). That may be your issue!

 

It also has a by-pass valve for rolling it around (page 3 in the 1978 Manual). Check that out.

 

Looks like fluid travels from pump to motor via hoses.


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#15 olcowhand ONLINE  

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Posted May 10, 2015 - 02:44 PM

Since only one wheel has a brake, and you evidently rolled it onto a trailer, the brake isn't the issue. May be the rear final drive is bad.  Is the rear a 2 speed unit?






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