Filter in hydraulic reservoir tank??

lweinschrott · Post by **lweinschrott** » Thu May 30, 2013 12:08 pm

I have a 1965 straight 350 gas crawler. The hydaulic pump went out and I replaced it. When I went to drain the tank and replace the filter that is supposed to be in it and I found out that mine has a solid cover on the tank and no filter system for it. The service manual shows a cover with six removable bolts with a gasket and filter element attached. Talked to the previous owner and he said that he replaced the pump last in the early 80"s and as far as he knows it was always like this. Just wondering if anyone else has seen this out there and maybe they just made the first few models like this. The service manual also shows a metal strainer inside by the suction line. I don't know if that is in there either because the fill opening is not that big to get a good look inside.

jtrichard · Post by **jtrichard** » Thu May 30, 2013 2:02 pm

is the (6 bolt) plate home made? where is the filler? you do have the 12 1/2" tank i am guessing.... looks like only the 9" tank did not have the filter in the tank

lweinschrott · Post by **lweinschrott** » Thu May 30, 2013 2:47 pm

The filler is on the top of the tank. I don't know the exact size of the tank but it holds around a little over 6 gal. of fluid when it is in the middle of the window.

wfoidaho · Post by **wfoidaho** » Tue Jan 20, 2015 11:54 pm

I'm in the same boat. My straight 350 has just the filler cap, no bolt cover. Where is the hydraulic filter located? I've looked high and low and I can't find it. Any intel would be appreciated. Thanks

Stan Disbrow · Post by **Stan Disbrow** » Wed Jan 21, 2015 8:18 am

Hi,

Early 350s don't always have one. My 68 did not, either. It may have been a 'rough service' option, hence no cover on mine. Mine was a basic machine, no reverser and the outside blade and standard pad width.

The filter may have been an option which eventually wound up as standard. Or, it may not have existed at all until a certain point in production. One would need original sales material to see ifnit was optional or not on the early machines.

Stan

cdunn · Post by **cdunn** » Wed Jan 21, 2015 9:10 pm

There was a lengthy discussion on this topic back on January 12, 2012, i don't know how to bring up sight, but i have 67 350 dozer and a loader I believe is a 68. The dozer has small narrow hydraulic tank with no filter and the loader has the long tank with the filter with the 6 bolts on top. There are pictures of both in this thread. Its on page 21, Thread line #22.

wfoidaho · Post by **wfoidaho** » Wed Jan 21, 2015 9:22 pm

Thanks for the info. apparently my 350 doesn't have a filter. It is the narrow tank. My hydraulic pump seems to be strong and I would like to keep it that way.

Has anyone installed a inline filter on the return supply line?

kilohertz · Post by **kilohertz** » Sun Jan 25, 2015 10:38 am

wfoidaho wrote:Thanks for the info. apparently my 350 doesn't have a filter. It is the narrow tank. Has anyone installed a inline filter on the return supply line?

I have a 1965 machine, outside mount dozer and has no filter either. There is lots of room in the tank side compartment, below the control valves for a filter....good thought. Do the spin on filters work inverted as well as upright? I have to pull my side cover off this spring to fix a slow leak in there...a good time to put in the filter.

Cheers
Paul

wfoidaho · Post by **wfoidaho** » Sun Jan 25, 2015 1:29 pm

Right now I have bigger fish to fry; left steering clutch is oil soaked, After I get this work done I'll look at installing a filter on the return side adjacent to the tank. I already have a filter base in my box of "treasures"; it can't be all that difficult to do, just some plumbing work.

I am surprised nobody's done this already as filters are a heck of a lot cheaper than pump rebuilds or replacement.

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Filter in hydraulic reservoir tank??

Filter in hydraulic reservoir tank??

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