Recent content by wford

First off, I want to thank you gentlemen for pointing me in the right direction, and causing me to focus on just the control linkage as the source of my problem. In summary, the problem was excessive play in the Pivot Links on both pumps, and the neutral control adjustment on the left side. It...

Also, do you know if those pump swash plate shaft pivot links need to be tight on the pump shaft (they seem to be design to ... pivot)? On my OMC 310, those links are bolted down tight in a spring assembly to return it to neutral, and the linkage is very straight forward. As you say, the...

Thanks, Hodrod, the consensus seems to be that it is a linkage problem, so next week I am gonna dive into it once again, and hopefully find some overlooked problem. I am gonna take a hard look at those shock absorber cylinders, too. This thing has done this for years, so I don't think it is the...

Boy, I wished you had watched, too, so that you could tell me exactly what they did. I have adjusted that linkage until I am blue in the face. As soon as the weather improves here, I'm going to get it out of winter storage, put it up on blocks, and take another shot at that linkage. There must...

Your thoughts on the linkage is interesting. I will take another look at the linkage, and do another readjustment. I have never been very impressed with the linkage design in this unit.

Thanks for your thoughts. I have checked the charge pressure, and it matches the values given in the service manual. The only time I had pressure issues was when one of the drive belts was slipping. Tightened belts did not solve this problem. I am thinking about buying a flow meter and see if it...

We purchased a used 1816B some years ago, probably the third owner, that has been a big disappointment. The seller said that the hydraulics were "a little jumpy" - that was an understatement. I only know of one other 1816 unit whose owner says his does it and it is the nature of the beast (but I...

Hogman, the short answer was the belt on the left pump. I found it by plumbing in a test set on the left side and running the pressure up until the left side lost pressure. What happened is that when the pressure reached 1800 psi the belt would slip -- no smoke or no squealing -- just slip; and...

Tazza, thanks for the reply. I've always thought it acts like a faulty relief valve, but haven't found any problem. I inspected the charge pump relief valve - it was clean and appeared to be in good working order. The charge pump operates at spec of 50 psi until the pressure dumps to zero. I...

I've spent the summer trying to solve a weak left-side drive. The pump is a Sunstrand 15-series coupled to a TRW Ross MAB motor. The pump recently had new seals and was lapped then tested to 3000 psi for 20 minutes at a Hydraulic Repair facility. The motor has a new rebuild kit and was lapped...