Liebherr 944B

[Rakthi]

That repair will hardly be noticeable when you re-install the boom.

On my Fumotec digger the oil filters are in the return lines. (there are 2 of those in the PC490)

The hydraulic oil you can order from the Premacon shop.
For what it's worth: from the manual of their Wheel Loader L576 2plus2: Refilling only with our hydraulic oil No.: 61000012. Wrong oil can damage of the seals.

[apfubar]

The filter can be installed between the return line on valve block and tank... Putting on the feed side causes challenges with oil pickup.

Cheers,
Ap
P.s. Premacon use a hlp 25 oil

[Stuart]

Thanks guys, its back together:



Made a couple of vids, testing out the pump with it bolted down to the base plate, after 1.30 mins its un-bolted sitting on a piece of foam rubber.

Pump test

First attempt at digging

Digging

I have 2 return lines back to the tank, 1 goes through the prv, which one should I put the filter in?

I will look for some hlp-25, on a french forum they are suggesting ATF, I thought that would damage the seals?

Cheers
Stu

[JAMMER]

Hello Stu great fix and it is better than new, should be stronger now. Ed

[Stuart]

Originally Posted by JAMMER

Hello Stu great fix and it is better than new, should be stronger now. Ed

Thanks Ed, i agree, I thinks its probably stronger.

Got my little pump mounts on, had to mill out the base of the pump mount to reduce the height:





Made a new vid: video

I think its quieter with the new mounts in, in the future though I think I'm going to swop it out for the new pump/plantary/motor combo.

Cheers
Stu

[Lil Giants]

So what's your dad building?

From the pump I see in Cooper's Premacon hyd package, I have the same motor/pump in my Fumotec 490 hoe, it's very quiet!

[Stuart]

Originally Posted by Lil Giants

From the pump I see in Cooper's Premacon hyd package, I have the same motor/pump in my Fumotec 490 hoe, it's very quiet!

Thats good to know, I've watched a few on youtube and they do seem pretty quiet but first hand knowledge is always better!

They are made by Martin Kampshoff

A really helpful guy, told me which one I needed to order, the one I have is a 4002 which produces 900ml/m @ 3500rpm direct drive, the new one I've ordered is a 4003 which is a higher capacity pump but still produces 900ml/min but @ 2500rpm through the planetary drive, motor spins at 10,000 rpm = less power consumption and noise.


New Video with sound module

cheers
Stu

[Stuart]

Its a 1/6th scale Comet tank based on an Armortek kit.
He's fitting it with a dozer blade and hiab, he's not in to forums so maybe I'll start a thread on it.

[Barker196]

Good job on the fix!

[Stuart]

Goodies arrived from chez Premacon:







New pump and filter are in:





Video Testing new pump/motor unit

Cheers
Stu

[andyathome]

do you have a link to where you got the sound card, it sounds awesome.

[liftmys10]

Sounds alot quieter with the new pump setup. Did you notice any improvements in the movements?

[Stuart]

Originally Posted by andyathome

do you have a link to where you got the sound card, it sounds awesome.

Thanks Andy, I'm really pleased with the sound, its a USM-RC2 by Beier I have one in my JD 9530 too, user programmable on the PC using there software, does all the lights and additional sounds aswell as an mp3 player, awesome piece of kit.

I created the sound files myself from youtube and edited them using Audacity.

Originally Posted by liftmys10

Sounds alot quieter with the new pump setup. Did you notice any improvements in the movements?

The new pump/motor combo is a vast improvement, so much quieter, uses less power so longer run times and yes I think the movement is smoother and more precise.

After a long day at a Model Expo (Pics) with the local club/Rc Forum on Sunday, I noticed an oil leak, turned out to be a bad solder joint on the bucket ram, a little twist and it came off, here it is after cleaning up:



Also broke a track link near the end of the day, so will order a few spares, I expected them to be a bit stronger than that



Cheers
Stu

[andyathome]

i agree . awesome bit of kit.
mine is on the plane heading my way.

[Stuart]

Originally Posted by andyathome

i agree . awesome bit of kit.
mine is on the plane heading my way.

Cool! be interested to see what sounds you end up using.

Repaired the bucket ram and made a modification to the hydraulic lines:





Back on track lol:



cheers
Stu