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Nothing in my inbox here, and nothing in my Face Book page.
Did you send it here?
https://www.facebook.com/yuchaidozer?ref=bookmarks
I did get a message from M. Werner though, about the same subject, and it appears that I had already sent him a set of manuals.
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Good job. Yes, it looks very similar and may be identical. When Yuchai acquired Gulin some changes were not made until much later, and some more subtle than others. I'll speculate that the piston stop was out of adjustment and allowed the piston to hyper extend and become cocked in the cylinder. You will have to remove the whole large top cover, then the solution will be quite evident. Not a bad job once you get all the hoses out of the way, but the top cover assembly is heavy, especially with the lift arms attached. Be sure to mark their location before you remove them.
If you want the manuals PM me your email address. The basic difference in the manuals is the three cylinder engine. Or you can get manuals at Northern Tool for a price.
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It would be in your best interests (and the dozer's) to install grease fittings.
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If it turns out to be similar to the YC series dozer, I'll send you parts and owners manuals to your email address. Just PM it to me.
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Do you have any manuals for it? I'm curious if your lift box is the same as the YC series dozers. Can you take a picture of the front and rear of the under seat area? The seat will have to be removed eventually anyway.
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Bummer. Hope the weather holds for you.
I just turned 74 and I'm REALLY beginning to feel it. I just retired from an engineering job that had me working 12 hour days. Seven days on, seven days off, 5 to 5, alternating nights and days.
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The bushings are pressed in the trunnion mounts, similar to camshaft bearings in an engine block. There should be a hole in the bushing that lines up with the grease fitting. Once the bushings are pressed in they will not come out, at least they aren't supposed to. There are several good reasons I can think of as to why the bushings came out, but that's not going to get you up and running again. First, measure the trunnion pins to see if they have been hammered out of round and/or if the surface area is damaged (Those are the round “thinghies” that are a part of the equalizing bar that fit into the trunnions).If they are in bad shape they will have to be sleeved or worst case – replaced.
FYI: In American “dozer slang”, the track frames are called swing frames, and the Chinese swinging arm is called an equalizer bar. Whatever….
I agree with David. Have Northern send you two new trunnion assemblies. Assembly means all parts included and assembled. And make sure they are drilled for grease fittings.
Do you have a parts manual?
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