I got an 1811 with hydro trouble

[john hall]

Thanks Jmech. I forgot about drilling for axle tubes, probably should have done it on the 782 I am slowly putting back together now. I didn't realize how much fluid those tubes held until I researched it just now. I've certainly got to check my 2072 for water, the 982 I only pulled the rear plate and scrubbed it down, hopefully the tubes weren't too full of gunk.

Sounds like I need to go ahead and get a full set of gaskets and axle seals and springs for the trunion and just plan on pulling the rear out and giving it a proper cleaning!

[ol'George]

Originally Posted by J-Mech

Another vote for fluid and filter change. I don't think there is any reason to flush the pump with diesel fuel. I would flush the rear end out while the cover is off, but no need to dump it down the pump. With a rear that has not been changed in who knows how long, I put in new fluid, sometimes Sea Foam, run the tractor (use it) and warm it up good a couple times, then drain and refill. I would also suggest a "cheaper" fluid for the flush. O'Reilly's house brand Dexron III is about the cheapest around here, and they will price match. ATF has different detergents in it that help clean. I won't get into the oil debate, but if you are far from the dealer....... You decide. It is worth the time to pull the rear and take the axle tubes off and drill holes in the case. What gets in there is nasty, and won't come out unless you take it apart. Sure, it takes some time, and you have to seal it all back up, but in the future if you drain it again, you can rest assured your draining everything. Why on earth they didn't cast holes there is beyond me.

John, the earlier IH Ag tractors used that idea of a separate reservoir for the bull gear hosings, only thing I can think of was they wanted some lube in there for the carrier bearings when operated @ angles, like plowing
I know I have drain plugs in the housings on my early 806 and you better remember to use them if you pull the bull gear housing otherwise it is a mess on the shop floor, about 2 gal each.
Other thought then was possibly no need to drain the complete tractor main case to service bull gear housing/axle bearing. ( axle tubes on Gt's)
Like servicing the hydraulic filter, no need to drain anything to change it, just like on the garden tractors.
IH recommended that the axle housings be drilled (updated) and the drain plugs on the bull gear housing be cut off flush to indicate the modification was performed. ( just cutting one plug off was acceptable)
You guys talk of cost, a drain & refill takes about 20 gal of hytran on a 806

[Terry C]

Originally Posted by ol'George

John, the earlier IH Ag tractors used that idea of a separate reservoir for the bull gear hosings, only thing I can think of was they wanted some lube in there for the carrier bearings when operated @ angles, like plowing
I know I have drain plugs in the housings on my early 806 and you better remember to use them if you pull the bull gear housing otherwise it is a mess on the shop floor, about 2 gal each.
Other thought then was possibly no need to drain the complete tractor main case to service bull gear housing/axle bearing. ( axle tubes on Gt's)
Like servicing the hydraulic filter, no need to drain anything to change it, just like on the garden tractors.
IH recommended that the axle housings be drilled (updated) and the drain plugs on the bull gear housing be cut off flush to indicate the modification was performed. ( just cutting one plug off was acceptable)
You guys talk of cost, a drain & refill takes about 20 gal of hytran on a 806

806 was my all time favorite tractor. Spent many an hour behind the wheel
Sorry to derail but George got me reminicing.

[J-Mech]

Originally Posted by ol'George

John, the earlier IH Ag tractors used that idea of a separate reservoir for the bull gear hosings, only thing I can think of was they wanted some lube in there for the carrier bearings when operated @ angles, like plowing
I know I have drain plugs in the housings on my early 806 and you better remember to use them if you pull the bull gear housing otherwise it is a mess on the shop floor, about 2 gal each.
Other thought then was possibly no need to drain the complete tractor main case to service bull gear housing/axle bearing. ( axle tubes on Gt's)
Like servicing the hydraulic filter, no need to drain anything to change it, just like on the garden tractors.
IH recommended that the axle housings be drilled (updated) and the drain plugs on the bull gear housing be cut off flush to indicate the modification was performed. ( just cutting one plug off was acceptable)
You guys talk of cost, a drain & refill takes about 20 gal of hytran on a 806

I've had many of those apart! The '56 series was the last to have the drain holes on the bull gear housings. I think you are right about them wanting oil in the housing for plowing. Probably the main reason for the newer series not needing this is they upped the amount of oil in the rear housing. I want to say that the '66 series held 26 gal. They also changed the seal location if you remember. The '06 and '56 series has greasable bearings on the end of the axle tubes. The '66 series had oil available to that outer bearing. There was a seal on the inside of the axle tube near the gear on the previous machines. I actually thought that was the better design, but I wasn't around for IH to consult....

Sorry to derail..... but I do love IH machines.

[john hall]

Update on the hydro. I haven't had time to touch the tractor but a small window of opportunity opened up yesterday afternoon. A filter change on another Cadet provided me with a temporary filter to see if the one on the 1811 was truly plugged. Put the used filter on, cranked it up and INSTANTLY all hydro issues went away. Before not only would the pump seem to lose its prime after a few seconds, it was jerky when starting. No strange noises (cavitation issues) either. I couldn't stand it so I had to give it a test drive for 3-4 minutes (dirty fluid or not). This hydro is acting perfect. climbs the steepest hills I dare, holds back going downhill, changes direction quickly, seems to be adjusted correctly (no creeping). On top of that the engine runs great and this thing steers almost like its got power steering. No way the 1700 hrs on the meter are correct, the machine just feels way too tight for that. Unless we get some snow, then I want to see what it will do with those ag tires in the snow, I'll park it till I can pull the rear cover and drain/mop out whats inside. I'll consider pulling the axle tubes or the axles to suck out the crap in there as well.

A tip of my hat to you guys, I'd never have thought a filter would have caused that much trouble.

[ol'George]

Originally Posted by john hall

Update on the hydro. I haven't had time to touch the tractor but a small window of opportunity opened up yesterday afternoon. A filter change on another Cadet provided me with a temporary filter to see if the one on the 1811 was truly plugged. Put the used filter on, cranked it up and INSTANTLY all hydro issues went away. Before not only would the pump seem to lose its prime after a few seconds, it was jerky when starting. No strange noises (cavitation issues) either. I couldn't stand it so I had to give it a test drive for 3-4 minutes (dirty fluid or not). This hydro is acting perfect. climbs the steepest hills I dare, holds back going downhill, changes direction quickly, seems to be adjusted correctly (no creeping). On top of that the engine runs great and this thing steers almost like its got power steering. No way the 1700 hrs on the meter are correct, the machine just feels way too tight for that. Unless we get some snow, then I want to see what it will do with those ag tires in the snow, I'll park it till I can pull the rear cover and drain/mop out whats inside. I'll consider pulling the axle tubes or the axles to suck out the crap in there as well.

A tip of my hat to you guys, I'd never have thought a filter would have caused that much trouble.

experience is a good teacher,
have a great day!

[CubDieselFan]

I am glad you found your problem. Oh happy day.