Nortrac dozer steering problem

Franken

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Jun 10, 2021
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10
Tractor
NorTrac 35 to dozer
What seems to be an inherent problem with these dozers is the design of the sequential linkage for the steering clutch/brake. For the existing system to operate correctly the brake adjustment must be "pre-loaded" tight, meaning that the brake band will always be in contact and rubbing against the drum.
I don't mean to blow my own whistle, but I have re-engineered the linkage system to operate correctly, with significantly less pedal effort and no brake band/drum contact. Details are on the Yuchai/Guilin Community Facebook page.
 

Franken

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Tractor
NorTrac 35 to dozer
Bob can you tell me or send me something that I to can redo the steering on my NorTrac dozer, I have been fighting it now for two years, thank you
 

Bob Rooks

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Silverdale & Bothell, WA
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Yuchai dozer, Mitsubishi mini-ex, Mustang skid steer, DR Power Wagon, Dirty Hands tracked power cart.
Bob can you tell me or send me something that I to can redo the steering on my NorTrac dozer, I have been fighting it now for two years, thank you
As usual, I can never find something when I'm looking for it. Must be on the other 'puter. Do you have the pendulum pedals or are your pedals on the floor boards?
 

Franken

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NorTrac 35 to dozer
As usual, I can never find something when I'm looking for it. Must be on the other 'puter. Do you have the pendulum pedals or are your pedals on the floor boards?
My pedals are in the floor
 

Bob Rooks

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Feb 27, 2007
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Silverdale & Bothell, WA
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Yuchai dozer, Mitsubishi mini-ex, Mustang skid steer, DR Power Wagon, Dirty Hands tracked power cart.
Can't find the files. I'll try to create a new one.
 

Franken

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NorTrac 35 to dozer
Can't find the files. I'll try to create a new one.
Thank you I’m sorry for all the trouble but the steering needs to be better then what they have on them now. Other then that it does what I need it to do easy
 

Bob Rooks

Elite Member
Joined
Feb 27, 2007
Messages
3,239
Location
Silverdale & Bothell, WA
Tractor
Yuchai dozer, Mitsubishi mini-ex, Mustang skid steer, DR Power Wagon, Dirty Hands tracked power cart.
Thank you I’m sorry for all the trouble but the steering needs to be better then what they have on them now. Other then that it does what I need it to do easy
It should be noted that the steering system on these machines will never be really great without a complete redesign. Even after Yuchai acquired the dozer from Guilin in the mid-nineties, the only changes have been to switch from an inorganic fibrous friction media to a bonded sintered bronze type disc.(They did try segmented lining on the brake bands but that was a flop). Because of the linkage design, pedal pressure requirements will always be high. The modifications I made to the system makes adjustments very easy, and significantly reduces pedal pressure requirements. The only caveat is that it will require considerable mechanical acumen because there are no step-by-step instructions. So if you want to reap the rewards of a challenging little project, I'll go ahead and recreate the drawing.
 

Franken

New member
Joined
Jun 10, 2021
Messages
10
Tractor
NorTrac 35 to dozer
It should be noted that the steering system on these machines will never be really great without a complete redesign. Even after Yuchai acquired the dozer from Guilin in the mid-nineties, the only changes have been to switch from an inorganic fibrous friction media to a bonded sintered bronze type disc.(They did try segmented lining on the brake bands but that was a flop). Because of the linkage design, pedal pressure requirements will always be high. The modifications I made to the system makes adjustments very easy, and significantly reduces pedal pressure requirements. The only caveat is that it will require considerable mechanical acumen because there are no step-by-step instructions. So if you want to reap the rewards of a challenging little project, I'll go ahead and recreate the drawing.
I’m willing to work on it, if it’s no trouble to you to send the drawings I’ll at lest will have something to work with and going by your knowledge I should be able to get my dozer steering solution repair thank you
 
 
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