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  1. D

    NH LB75B Fuel pump

    Thank you for the tip. I will pick up a few filters to have some on hand. It was good to work it for awhile! (even tho it was only 20 degrees out.)
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    NH LB75B Fuel pump

    Bad manual fuel pump. Replaced, and is running.
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    NH LB75B Fuel pump

    Tinkerer, At the time I tried to manually prime it, I didn't notice anything happening. The shop did confirm what you just said, if the cam is in the wrong position, you can pump until your finger is noticeably shorter, but it will do no good! Thank you for the link to the fuel system. It does...
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    Section for komatsu d20,21 and similar grey market dozers

    Only thing I'd worry about then is that if the machine sits for awhile, the portion of the brake drum and the clutches that are no imersed in oil could rust. I realize that they have been in oil for some time, but wouldn't want to risk them rusting. Darin had mentioned the incorrect fiber of the...
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    NH LB75B Fuel pump

    Not exactly sure I understand what you're saying. I described the location of my injector pump and was trying to understand whether this system had two lift pumps and two filters. Googling and ebay provides a listing for both electric and mechanical lift pumps for the LB's. I was also trying to...
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    NH LB75B Fuel pump

    I looked at the diagrams you posted and thought 'they don't look like my injector pump or motor'. So off I went to the local NH dealer to talk to the parts dpmt. I told them what my problem was and how I wanted to check the voltage on the shutoff at the inj. pump, but thought it was in the back...
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    Section for komatsu d20,21 and similar grey market dozers

    No breather caps were installed. Would be a good idea, tho... I do feel that the extra oil in the finals came from when they filled the steering cases. I'm not sure those sections are completely sealed from each other. I don't know that the finals shafts coming from the steering cases have...
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    Section for komatsu d20,21 and similar grey market dozers

    Here is a long winded story that may provide some food for thought for those who own/operate the D20/21's and have problems with the steering/braking on them. I purchased a D21-6a around 2007 from a neighboring state. I had a company truck it for me. Started using it to level 72 dump truck...
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    According to the Operator's Manual I have for mine, engine oil goes in both. The rear drives are...

    According to the Operator's Manual I have for mine, engine oil goes in both. The rear drives are called 'final drive cases'. The book says that when the ambient temp is 32 F and above, use SAE 30. From 50 F and below, as in zero, use SAE 10W.
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    NH LB75B Fuel pump

    Sitting on the tractor, left side of engine. On that side, is located the mechanical pump right below the fuel filter. Line goes from the pump to the filter and then it goes to the right, towards the back of the tractor, and therefore the back of the engine to what I believe is the injector...
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    NH LB75B Fuel pump

    Thanks for the input. When I first got the machine, I drove it for 10 minutes before it shut down and wouldn't start. After some inspection, I put more fuel in it. Then I noticed that the filter was old. When I removed it, it was full of sludge/water. I had to drain the tank and put new fuel and...
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    NH LB75B Fuel pump

    I have a 2003 LB75. All of last summer it started without any problems, once the batteries were replaced. Then, around September, a new problem started to develop. It would get harder and harder to start, meaning that it would turn over fine, but not start. After a bit of cranking, it would...
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    Another LB75 starter issue

    Lessons learned: Checked position of all controls to make sure they were in neutral position, they were. Even shifted gear selector to neutral, forward and reverse already was in neutral. No change. Voltmeter registered 12.44 volts at batteries and same at starter. Dropped to 5.4 and...
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    Another LB75 starter issue

    I will try these tests on Monday and get back to you. fpgm04, I had wondered the same thing. We used to have a Ford 8N, that if the three point control lever was in the lift position, it would make the battery/starter work harder to turn over engine AND lift the blade on the back. I plan on...
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    Another LB75 starter issue

    Bluox, yes, I own a voltmeter and will see what the readings are static and while trying to start. As of yet, I haven't done that. Is that what you suggest? Tinkerer, not sure if/where the battery cut off is/would be. It does have a ground cutoff, located on the firewall by the clutch. I have...
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    Another LB75 starter issue

    Would that be like a 2/0 cable, the same thickness as the original, or something smaller like 10 or 12 gauge? If it is to be the 2/0, is there someone who sells the replacement cables for this unit? There is a local shop that can make up a cable for me if I can't buy one straight out. The...
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    Another LB75 starter issue

    Starter switch is on my list of possibles. The key being used is actually from a Yamaha, not a NH. It has started the unit in the past, but never well. The unit has had this same problem to a lessor degree since I bought it 2 years ago. It wasn't until a month ago that it became impossible to...
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    Another LB75 starter issue

    Just as an addendum, the cables were tested for resistance at the shop that rebuilds starters. One end of the positive had evidence of getting rather hot as the plastic coating was melted, date unknown. The end was cut off and a new end soldered on. All battery posts were cleaned, as were the...
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    Another LB75 starter issue

    It's possible that someone else may have posted this problem. If so, please forgive me and direct me there and I'll read. If not, here goes: 2003 NH LB75B, 5200 hours. Problem: Starter turns engine over only a 1/4 of a turn and then goes click click, as if the batteries are dead...
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