Loss of power on D6 9U dozer

Hey Jan,

Sounds like a fuel delivery problem. It does make me think the four filters are bad. Next I would check where the fuel line connects to the transfer pump. Take the connection apart and be prepared for the spring of check valve to pop out. Be prepared to close valve on bottom of tank. Put a bucket under line and check flow. It should be full flow. Close valve. Clean seat valve and check surface to make sure perfectly smooth. File if necessary. Stretch spring and re install. If fuel filters and check valve are good, then it sounds like transfer pump is not up to spec.
Glen

in my experience, cat still sells the filters and they are cheaper then buying at napa. at least up here in canada they were. and they were in stock.


part number should be 2a5886 elements, you will need 4 of them.


you'll also need 2 7b7635 gaskets

please verify the numbers, i don't have my parts book handy and those were off an invoice i had from last year.

did he drain the filter tower and wash all the crud out of the bottom? there is a fairly large resevoir to collect crud under those filters. i have pulled the drain plug and not had any fuel come out, stick a rod up the hole and found over three inces of crud in the bottom of the housing.

glen has some good advice about the transfer pump feed as well.

Since the filters were just changed, I wonder if your man turned the fuel valve under the tank all the way on? Something to check anyway.

Good luck

Bruce P

Hey Jan,

Bruce P has a Good Point... Put the hose end of transfer pump in a bucket. Turn valve on from under tank until greatest flow. Take note of orientation. I have had cats that guys help with and don't get the valve turned on all the way. This may be something to look at.

Hey Jan,

I just realized your mistake. Borrowing from the nursery rhyme, "The little engine that could", you forgot to continuously say, "I think I can, I think I can..." then when you were finished with the work you should have said, "I thought I could, I thought I could...". See, it is that simple...😉😉😉😉😉

Jan,

One more thought. You simply MUST get a blade on Ol' Dick so there would NOT be any further problem with the D6...:drum::drum::drum::drum:

Definitely check the filters again just incase. I spent a lot of hours one summer trying to figure out fuel problems because I'd just changed the filters. I had gotten a bad batch of fuel and had to change the filters 3 times one summer to finally get it straightened out. The fuel shutoff being partially closed sounds like a cheap fix too.

Good Luck, Randy

Hey Jan,

Bruce P has a Good Point... Put the hose end of transfer pump in a bucket. Turn valve on from under tank until greatest flow. Take note of orientation. I have had cats that guys help with and don't get the valve turned on all the way. This may be something to look at.