TD 9 forty's D335 where is by pass located?

hello.
I have the TD 9 D335 diesel engine. Can anyone tell me where the by pass filter is on this engine. I am unable to find it. Was thinking on the left side as you are looking from the front. There is a plate on the side of the engine. There is a piece of metal and at the bottom are two bolts. Could this be the by pass filter?
appreciate response.

The TD9-91 is listed as having a full flow and bypass filter so you would have two filter cannisters,the TD9-92 is listed as having a full flow only so you will only have one filter cannister,go to the Baldwin filter site and look up the off highway applications find the TD9's under IHC,crawler tractors and you can see a picture of the filter elements.how did you get on with the engine problems you were having.
AJ
http://baldwinfilters.com/

If this is an early one there should be a fully visible filter housing of the element type about where you're talking of having a plate.

If you've only got a plate then I think something is missing and that is likely to include any filtering.

AFIK

(quoted from post at 02:37:12 07/08/15) If this is an early one there should be a fully visible filter housing of the element type about where you're talking of having a plate.

If you've only got a plate then I think something is missing and that is likely to include any filtering.

AFIK

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Thank you.There is a filter canister; I have changed that filter a couple of times. The plate I was speaking of isin ront of the canister. How is an oil filter a by pass?

Thank you AJ. I went to baldwin. I have changed the oil filter -1- a couple of times; however, I am curious as to a bypass. Most all combustion engine have a bypass, so as to relieve the pressure in the crank case. I had replaced the rear oil seal, gaskets, and the engine -at the rear- is stil leaking oil. A bit of oil at idle; and streams out with increase in rpm. Everything was done correctly, so I thought of the bypass, because if the bypass was plugged, or there is no by pas then the pressure would be great and blow oil out a seal.
I had changed pistons, rings, and replaced the head -with gasket. The engine operates good. Problem leaking oil. I can lose four quarts in about four hours or less.
good to hear from you

I think what you are calling a bypass, is what is normally called a crankcase breather.

Sorry to hear you have an oil leak,as wd9garymn said have a look at the engine breather or leave the oil filler open,I doubt if the filter is the cause of the leak or high pressure as the oil pump will have a pressure relief valve,what is the gauge saying,that style back seal is a pain,if the bearing are worn or the throwing grooves on the shaft clogged with carbon they will leak and its such a pain to get to,I think you had the engine out to replace the seal at the start,you deserve credit for not giving up on that tractor it was one thing after the other but you hung in there,try it with the filler open and see what the back pressure is like.
AJ

(quoted from post at 07:54:54 07/08/15) I think what you are calling a bypass, is what is normally called a crankcase breather.

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Thanx either way it comes out the same.

thanks AJ. Oh, there is no oil gauge. The problem is, I don't know where the by pass, or breather is. On the intake/exhaust side of the engine there are two plates -correct. The plate in back of the oil filter canister, in the middle of the plate there is a rectangular piece, and at the bottom there are two bolts. I attempted to feel -with a finger- between the two bolts, and I think there is a screen -not positive. This could be the by pass. or breather. what do you think? I'll check tomorrow. right now I am grading a road. I am persistent. I don't know what give up means. In any event I remain fond of the dozer, and I am willing to keep it operating smoothly. I have learned much. I make sure I start the engine with great care. The tracks; wheels, are in good condition. The dozer is enjoyable to just sit there and move the handles, and ride is a life time of enjoyment. Here in Arizona it is dry. A fellow could spit and it won't reach the ground. So, there is no rust.

The breather is no more than an opening for the crankcase to breath as the pistons go up and down creating both pressure and vacuum,there are many types,a lot of IH's had wire gauze in the oil filler cap,others could have an open ended pipe from the crankcase or rocker cover and they could get blocked with dirt in the belly pan,could it be possible the oil level in the engine is too high due to a wrong dipstick,does the amount of oil you put in tally with the manual,alas it is never as simple as that but it's a thought.
AJ

The breather is most likely like a TD6 and in behind the carb - and a pain to get out though a 9 might have more room. As I recall it is a wire gauze assembly, and there was a bolt on breather tube on the bottom pointing down.

Thanks again AJ. I have another TD 9 block, and the oil dip stick is the same. The oil fill cap screws down on a stud and seals against the hole -no way to breathe. It has the correct amount of oil. I think it may be that device on the plate. Last night, and today we have experienced much rain -torrential. Have to use my four wheel to get out of the property, and get to the dozer, maybe tomorrow. I will let you know my findings.

(quoted from post at 03:52:36 07/09/15) The breather is most likely like a TD6 and in behind the carb - and a pain to get out though a 9 might have more room. As I recall it is a wire gauze assembly, and there was a bolt on breather tube on the bottom pointing down.

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This plate, the device, is sitting just between the carb and the oil canister. I will have to remove the oil canister to get to those two bolts. I think what you have said is relevant. I am checking it tomorrow. Thanks again.

(quoted from post at 13:44:43 07/09/15)

(quoted from post at 03:52:36 07/09/15) The breather is most likely like a TD6 and in behind the carb - and a pain to get out though a 9 might have more room. As I recall it is a wire gauze assembly, and there was a bolt on breather tube on the bottom pointing down.

Click to expand...

This plate, the device, is sitting just between the carb and the oil canister. I will have to remove the oil canister to get to those two bolts. I think what you have said is relevant. I am checking it tomorrow. Thanks again.

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I removed the plate with breather. The tube had been broken somewhere before me. It wasn't plugged; not enough to cause any problem. I cleaned it the wire guage, and placed it on the engine. The oils still pours out the back as it did before. I removed the oil filler cap, and no change. When I replaced the rear oil seal, gaskets, everything was done correctly. So, I don't want to do everything over again. thanx to everyone.