Various restorations/projects from Bosnia

[selmir_Bosnia]

Happy New year to all maskinisten here!!

I am way to bussy now for any serious projects, simply no spare time anymore

Luckily, i found some during holidays so i used them to fix some tools i aquired. Reciprocating saw Rothenberger and small hand saw Holz Herr, also Bosch pnematic scredriver (real industrial tool, had to fix it since it was completely seized), great Fein batery drill and impact screwdriver. Rothenberger was in horrible condition, completely seized with dirt and old grease, one bearing had to be replaced (6000). Now it works like a charm. Holz Herr saw was in good condition, just cleaned her and replaced grease in gearbox, old one was totaly hard and useless. Bosch pneumatic scredriver is such a great machine, real industrial grade. Pneumatic motor was totaly seized, it is vane type motor inside and all motor blades were stuck so i had to clean it. All parts are small so it was quite hard to dissassemble it. Unfortunately i forgot to make any pictures

[selmir_Bosnia]

Friend of mine came by at weekend and asked me to help him clean oil filter on his Zetor 7745. He had no idea that you need to clean centrifugal filter at all so i used tractor since 2012. when he bought it. I believe that filter was not cleaned yers before that either. There was like 300-400 grams of hard sludge inside, i do no understand how it worked at all.

[igelkottar]

Happy New year to you to

[Offside]

Have a good year to come!
I´m impressed what you do with old and broken tools.
This is the future, to repaire and fix things.
Off course it must be good quality from the beginning.
Nice thred.

[selmir_Bosnia]

Hi all! Here is my latest project, conversion of an old Massey Ferguson 155 from mechanical to full hydraulic steering. I do it for my fathers old friend, guy has some serious heart problems but still wants to work. He pays for material, my work is for free

[selmir_Bosnia]

[selmir_Bosnia]

[selmir_Bosnia]

Some images from my work, large bearing holder that was totaly destroyed when bearing broke down and special cross for orthodox church in city of Mostar in Bosnia











You can also see Briggs engine thatm is killing me, it was not possible to make repair carb so i had to oreder new one from China for 19.99 dolars, it will arrive in few weeks.

[selmir_Bosnia]

Hi all!

I have a problem and need advice. I mounted all parts on tractor as shown on pictures, made hydraulic hoses yesterday and filled system with oil. The problem is, steering is very slow. If i try to turn the steering wheel very slowly, steering is light but if I try to turn it with normal speed it becomes very hard. Full throttle makes things a little bit better but it is still not usable, you can not drive it that way. Orbitrol valve works just fine, you can steer even if engine is not running. I suspect that pump is too small and it lacks capacity. There are no any markings on her so I do not know her working pressure or capacity. I know that this oribtrol (steering valve) needs at least 20 l/min of oil to run. What do you think, is it pump?

[rospigg]

Hi Selmir!
Is there any text or numbers on the pump that can tell something?
If you change the beltwheel on pump to half of todays diameter, the pump will double the capacity.
/Rospigg

[ja-bond77]

Have you removed the gear engagement inside the steering box so the steering arm is free to move? Propably an obvious question but I can´t think of anything else at the moment...

The pump rotates in the right direction?

[selmir_Bosnia]

Problem is not mechanical, when hydraulic cylinder is not mounted you can easily move wheeln from one to the other side. Checked the pumpt direction too, there are "IN" and "OUT" on her and i checked it, oil goes from "IN" to "OUT" and direction is also marked with small arrow.

I will try to mont smaller belt wheel on pump and see if it gets better. If it does, i will be certaint that pump is the problem.

[Bengt Erik Eriksson]

It is also my suggestion that it is oil flow that lacks. A smaller pulley would help i guess. Hopefully it is all that is needed.
Be aware not to exeed pupms' max rpm. If ou can find it out what it is..
Nice and well done job as allways!

[selmir_Bosnia]

Well, believe it or not, it turned out pump is OK. Problem was orbitrol steering valve. I mounted another pump, a bit bigger, and it still not worked. Then i installed overkill pump with 50 liters per minut and again nothing. After installing another steering valve, everything runs great with that first pump. Orbitrol steering valve has some problem in its valve section, "pump" section (round lower part of steering valve) is OK, that is why it was possible to turn wheels even when engine was not runing. When under pressure, something in valve section stucked and made serious problems. I will sell it to someone willing to repair it. Also, now i have to find another, smaller hydraulic cylinder, this one is too big for new steering valve (it has 80ccm per revolution) so you need to make 6 rounds on one side and 5 rounds on another and that is too slow for driving. I will find smaller cylinder that will work with 2.5 to 3 turns to either side.

This job turned to sucha mess, i had headache for days trying to solve it...

[Jac]

Maybe something like this happened: http://www.insanehydraulics.com/battlef ... ating.html