old dozers and oil?

[Troy21]

i know a lot of old euiptment with cast cases sweat and cause moisture witch leads to water inside with the oil's i have a old d7 i just got and from the books i have and records in the books it looks like the oil hasent been changed since 97.. thats the last note in the book ,with that said i changed the thick oil and fist thing that come out the oil pan was about a half pint or less or pure water, my tranny was even worse with proble a quart of water in the tranny ,anyone else ever ran into this, man all i can keep thainking is this dozer has set a long time to have that much water

 

[Bill Lisbon]

This is common with tractors that set, I remember draining about a gallon out of a Farmall M once.

 

[Roy Suomi]

I'll bet most of that water got in there from shifter boots or top covers that weren't sealed properly..Another spot for water infiltration is steering clutch lever pivots and steering clutch top covers there too...A lot of people use silicone to seal top covers, but that's a no no..Silicone degrades badly from fuel and or oil leaks..I always use plastic gasket on these surfaces..Another thing that is a must , is to cover the entire rear section from dashboard to over fuel tank.. Deere's are real bad for water problems there..Also keeps the kids away from your guages..

 

[Troy21]

yea i just dont understand wi cast is that bad on sweating.. wonder how long one has to set to get a pint of water in the oil pan? this old girl in good shape id say it aint seen much work in years, and with all the nots in the book on when the oil was changed and what was used, someone was taking care of it, gess ill be the one to keep care of it now

 

[Billy NY]

It's a common occurrence, some time back while getting my old 850 ford ready for mowing in the spring time, I drained at least pint of water from the transmission, it settles and you get most of it out.

On the D7's there is obviously one shift lever boot the 5 speed main, the direction lever and steering clutch levers I do not believe will allow water, well rain to seep in, could be wrong, not sure about the boot on the trans lever though, think mine are both still intact. Some of the older and smaller Cat's like the D4, D2 steering clutch's seem to be prone to having problems with the disc's seizing up, when idle too long and not under cover. I've never noticed it with D7's. The final drive compartments always seem to take on water, could be faulty bellows type seals, and running in water or, just plain condensation.

Nice you have one with some maintenance history included, one thing is for sure, these things sure hold a lot of fluids in their components !