HD11E manual trans pressure

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   I've done about 10 hours of dozing since I got it running. 

After filling the manual trans, I had to  filling the filter housing directly. Tranny pressure came up at that point and was consistent when I was in gear. Pressure was rpm dependent and behaved as I would expect (less pressure when the tranny warms, more pressure when cold). 
 After it sat for a week or two, no tranny pressure. I drove it for a few minutes hoping it would work itself out and it didn't. I primed it again at the filter housing and pressure is very inconsistent. It drops sporadically like it has air in the line. It has steady pressure when in reverse . It also seems to have better pressure when on an incline with right side of dozer higher. On an incline with the left side of the dozer higher, I have zero pressure. The pipe from the trans filter to the sump meets the tranny on the left, so that would suggest that the fluid is low.. I have at least a half gallon more than the spec notes in the tranny. 

My concern is no fluid getting to the bevel gear via the sump. 

How would I bleed this sump or can I?

Thanks

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Gargoyle Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 29 Aug 2013 Location: Missouri Points: 186	Post Options Post Reply Quote Gargoyle Report Post Thanks(0) Quote Reply Topic: HD11E manual trans pressure Posted: 06 Jun 2014 at 4:29pm
	I've done about 10 hours of dozing since I got it running. After filling the manual trans, I had to filling the filter housing directly. Tranny pressure came up at that point and was consistent when I was in gear. Pressure was rpm dependent and behaved as I would expect (less pressure when the tranny warms, more pressure when cold). After it sat for a week or two, no tranny pressure. I drove it for a few minutes hoping it would work itself out and it didn't. I primed it again at the filter housing and pressure is very inconsistent. It drops sporadically like it has air in the line. It has steady pressure when in reverse . It also seems to have better pressure when on an incline with right side of dozer higher. On an incline with the left side of the dozer higher, I have zero pressure. The pipe from the trans filter to the sump meets the tranny on the left, so that would suggest that the fluid is low.. I have at least a half gallon more than the spec notes in the tranny. My concern is no fluid getting to the bevel gear via the sump. How would I bleed this sump or can I? Thanks

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Gargoyle Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 29 Aug 2013 Location: Missouri Points: 186	Post Options Post Reply Quote Gargoyle Report Post Thanks(0) Quote Reply Posted: 10 Jun 2014 at 3:59pm
	More info that might allow someone to make an educated guess on my trans pressure question. The parts manual shows multiple sump configs. Near as I can tell, considering the quality of the drawings, is that I have the wet sump (page 296 of the parts manual (HD 11 prior to serial number 12000). My serial number is 8878. The only screen that I see is part 098940. That screen is in the bevel gear compartment. Can I clean this screen (assuming that it's still in one piece) ? FYI, Minnpar only wants $708.16 for this screen. Based on the drawing, the sump sends fluid to the bevel gear but that fluid does not have a return. That seems odd... My only concern is very intermittent trans pressure. I'd like to give the machine as long of life as possible and if there is anything I can do, please point me in the right direction. thanks

Lazyts Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 05 Feb 2012 Location: Manitoba Points: 632	Post Options Post Reply Quote Lazyts Report Post Thanks(0) Quote Reply Posted: 10 Jun 2014 at 10:34pm
	Check the piping for cracks. Sounds like it is drawing air.

Gargoyle Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 29 Aug 2013 Location: Missouri Points: 186	Post Options Post Reply Quote Gargoyle Report Post Thanks(0) Quote Reply Posted: 11 Jun 2014 at 6:53am
	Thanks lazyts JmD said the same thing when I called him. I'll crawl under and see what I can see

Gargoyle Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 29 Aug 2013 Location: Missouri Points: 186	Post Options Post Reply Quote Gargoyle Report Post Thanks(0) Quote Reply Posted: 13 Jun 2014 at 9:06pm
	I crawled under the 11 today and wiped off all the piping. I ran it a while in neutral and checked for leaks. I found 1 drip in the compression fitting next to the filter housing.. It took a while to bleed the air out of the lines, but it appears to be good steady pressure now. Thanks!