New (to me) d7e Whining Noise

Ok I just went and took a video, Ill post the photobucket link here. I also noticed on shut down, that there is a super huge squeal. I could it be possible that I just need fan and alternator belts? (of course I didnt get a video of the shut down haha)

At the very end of the video is the breather where it is leaking.

[img]http://i391.photobucket.com/albums/oo351/preppypyro/th_IMG_0839_zps0q5ohzkf.mp4[/img]

No!!!! that noise is not normal. Sounds to me like the hydraulic pump for the power winch control is screaming. Have you checked the oil level and filter/s for the winch?
Pump is located under the floor board, right hand rear of engine.

Unit should not be run until problem is corrected or expect/if not already damaged.

The winch pump is running dry!! probably shot now. go through and inspect the winch oil and filter.

Thanks guys, will do! Is a winch pump hard to find new or used/tough to change?

Ok, so heres what I have done.

I started up the dozer and drove it in front of the shop, with it squealing away.

I took off the right side (passenger side) footboards, and "played" with those levers beside the seat. Im really not familiar with this dozer at all, but I can only assume what I did, was had the winch engaged with the levers, and something isnt working right with the winch, so the pump was trying to push oil and it wasnt going anywhere, just heating up.

I didnt change the filter (in my video I took a picture of it, can someone verify please?) all I did was check the fluid levels again, I put the levers into what I think is the neutral position, and I started the dozer up, let it run for a little bit, and the squealing or whiny noise went away.

I did smell a little burnt oil smell when I took the floor boards off, but that has went away now as well. I realize I should probably change the oil.

Does anyone by any chance have a service manual for sale on pdf? Or something I could check out so I could familiarize myself with this machine at all?

Posted a video below.

[img]http://i391.photobucket.com/albums/oo351/preppypyro/th_IMG_0845_zpsjhtwyp7w.mp4[/img]

ebay have the army copy on cd - http://www.ebay.com/itm/Caterpillar-D-7E-D7E-D7-E-Parts-Service-Repair-and-Operator-Manuals-on-CD-/200695093880

The screaming noise was most likely a relief valve lifting due to control levers being out of sync. Late models have both a pressure and suction filter. Did you check oil level in the winch? Holds about 20 gallons. You'll be lucky if no damage was done.

You can read up on the winch here.....
http://www.alliedsystems.com/pdf/Winch/Manuals/599263W.PDF

ebay is the best source for original manuals on the tractor.

Thanks a ton on the links for the manuals fellas!

I really appreciate all the help on this ol brute!

I havent checked the fluid level on the winch yet. I just found a manual for the winch tonight. Looks like its as simple as just taking the plug out and looking though.
I cant really seem to find any more filters than just the one for the hydraulics. Is there a place where a guy should be looking for them?

What model winch do you have ? D7K?
Should have a suction screen/filter in the winch itself. Behind cover plate. Pressure filter up by the controls.