oil drain plug
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- 40C crawler
- Posts: 21
- Joined: Thu May 20, 2010 2:08 pm
oil drain plug
Where is the oil drain plug on my 350 dozer? The parts book shows it on the side of the oil pan, which I can't get to. I see a hole in the belly pan and there is a plug that I can see through that hole. It appears that plug requires a special wrench. I am confused. Any help out there?
Builder Bob
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- 40C crawler
- Posts: 21
- Joined: Thu May 20, 2010 2:08 pm
- dozingdozer
- 420 crawler
- Posts: 44
- Joined: Mon Dec 20, 2010 12:10 pm
- Location: southern maine
mirror comes in handy
BB a mirror comes in handy to clearly see the drain plug and what kind of tool you ned to get it out. I have a 350c and was suprised after a few skinned knuckles in sub freezing tmeps that previous owner had swithced plugs. Might try that before pulling skid plate.DD
76 JD 350 CE dozer-85 Vermeer 434 trencher w/bhoe
Forgive me for being a little skeptical but I just want to make sure you have the right plug.
The bottom of the nose of the machine is sloped back and down to the front of the skid plate. There should be a hole directly in the front center of the front skid plate. Directly underneath the engine. There should be a 1 1/8 inch hex head plug that is in the bottom of the oil pan. If your plug is different from this, then it will be a new one on me. I'm not saying it isn't possible.
To answer your question about removing the front plate. They can be difficult to remove as most if not all are sprung out of the original shape. Getting them down isn't so hard as getting them back up and into position is. You sure want to have a good jack under it to help in lowering it down. Not so much from the weight as it is because of them being bent and distorted to the point that they are usually spring loaded. When you take that last bolt out they will come down with some force. So be careful should you decide to proceed. There are four bolts at the front end of the plate and three along each side that screw into the bottoms of the side frames. There are four bolts that fasten the rear of the front plate to the back plate. Some are removable and some you can't remove without lowering the entire plate. All should take a 15/16ths socket to remove. Some machines have pivot brackets for the nose on either side that need to be removed as well. They are held on by two 1/2 inch bolts each that take a 3/4 inch socket to remove.
Personally, I would try anything and everything to remove the plug without removing the skid plate. If you do indeed have a 1/2 drive style plug, make sure the square hole is cleaned out all the way to the bottom. Sometimes dirt can be packed in really tight and not let your drive have enough depth to grip well. Good luck and keep us posted.
The bottom of the nose of the machine is sloped back and down to the front of the skid plate. There should be a hole directly in the front center of the front skid plate. Directly underneath the engine. There should be a 1 1/8 inch hex head plug that is in the bottom of the oil pan. If your plug is different from this, then it will be a new one on me. I'm not saying it isn't possible.
To answer your question about removing the front plate. They can be difficult to remove as most if not all are sprung out of the original shape. Getting them down isn't so hard as getting them back up and into position is. You sure want to have a good jack under it to help in lowering it down. Not so much from the weight as it is because of them being bent and distorted to the point that they are usually spring loaded. When you take that last bolt out they will come down with some force. So be careful should you decide to proceed. There are four bolts at the front end of the plate and three along each side that screw into the bottoms of the side frames. There are four bolts that fasten the rear of the front plate to the back plate. Some are removable and some you can't remove without lowering the entire plate. All should take a 15/16ths socket to remove. Some machines have pivot brackets for the nose on either side that need to be removed as well. They are held on by two 1/2 inch bolts each that take a 3/4 inch socket to remove.
Personally, I would try anything and everything to remove the plug without removing the skid plate. If you do indeed have a 1/2 drive style plug, make sure the square hole is cleaned out all the way to the bottom. Sometimes dirt can be packed in really tight and not let your drive have enough depth to grip well. Good luck and keep us posted.
40 plus years working on JD 350s, 400Gs, 450s and other equipment both Ag and Construction.
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- 40C crawler
- Posts: 21
- Joined: Thu May 20, 2010 2:08 pm
oil drain plug
When I get that sucker out I'm going to take a picture and post it. Using a 1/2" breaker bar is out of the question because what was once a square hole is now almost round from previous owners' abuse. You have talked me out of dropping the skid plate, however. Seems lik too much hassle.
Builder Bob
It is possible to remove the oil using one of those hand operated suction pumps; relatively inexpenive found at most auto supply stores. May take some time but not as long as dropping the belly pans. Also, may not get all the old oil out, but can get most, enough for a good oil change. Flexable tube down the dipstick hole works.
57 420c 86 Ford 4600
67 350 dozer
66 350 loader
58 Oliver OC-4
48 8n Ford
49 Farmall Cub
Struck Mini-Dozer
67 350 dozer
66 350 loader
58 Oliver OC-4
48 8n Ford
49 Farmall Cub
Struck Mini-Dozer
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- 40C crawler
- Posts: 21
- Joined: Thu May 20, 2010 2:08 pm
Re: oil drain plug
This is a pretty good thread about options to get the plug out, if you want:Builder Bob wrote:When I get that sucker out I'm going to take a picture and post it. Using a 1/2" breaker bar is out of the question because what was once a square hole is now almost round from previous owners' abuse. You have talked me out of dropping the skid plate, however. Seems lik too much hassle.
http://www.jdcrawlers.com/messageboard/ ... light=plug
(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment
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