Building my own PE250x400 Tracked Jaw Crusher Build – Need Advice on Hydraulic Drive vs Separate Diesel & Yanmar Engine Options

When you think about a second diesel engine i think about some kind of clutch cause it has to start with no load

Yes I can fit a different aux pump to the back of the track pumps if i need to, so I dont have to use the small gear pumps if they are not suitable. I will have a look at what the mixers use.

JRK said: When you think about a second diesel engine i think about some kind of clutch cause it has to start with no load Click to expand... That is also true. You can get a diesel engine with the crusher but its still only connected by belts so starter motor also has to turn the weight of the flywheel. But I could use a belt tensioner to release and apply drive.

naved said: That is also true. You can get a diesel engine with the crusher but its still only connected by belts so starter motor also has to turn the weight of the flywheel. But I could use a belt tensioner to release and apply drive. Click to expand... Does that work without the belts slipping over the groove while engaging ? I only know that from very old flat belts

naved said: There are numbers on the pumps but can't match them to anything I'll attach them here. And all the cab and everything was removed from the marooka frame so I dont have a serial number but it is a YFW40R. Click to expand... Pump gears 1L*DL26B Roquet Distributors of products Roquet. Axis L-type outputs flange cover 26 www.hidraflex.com

PEDRO ROQUET PUMPE 1L35DE10B, WP09A1B230R06NB160N PEDRO ROQUET PUMPE 1L35DE10B, WP09A1B230R06NB160N www.lutz-hydraulik.biz

I have built a couple of crusher’s, you will be having fun. Best way for a feed is to use a 2 yard dumpster. Pre made, reasonably cheap and easy to reinforce. the main hydraulic drive pump could be used for the crusher and then use the smaller one for the drive motors as it will never move as much as originally. Fun project. One I built has a Cat 3306 for the mill and neither mill I built were mobile. Just rigged up sled frames with H beams, so it could be dragged around.

I had the time watch your video. Interesting work. Brave to start even with no Hydraulic fluid in the pumps and the main drive motors. Would be my biggest concern.

JRK said: I had the time watch your video. Interesting work. Brave to start even with no Hydraulic fluid in the pumps and the main drive motors. Would be my biggest concern. Click to expand... when i disconnected the hoses a lot of hydraulic fluid came out so wasn't sitting dry. i tend to punish my self on these projects. but i like a good challenge.

HarleyHappy said: I have built a couple of crusher’s, you will be having fun. Best way for a feed is to use a 2 yard dumpster. Pre made, reasonably cheap and easy to reinforce. the main hydraulic drive pump could be used for the crusher and then use the smaller one for the drive motors as it will never move as much as originally. Fun project. One I built has a Cat 3306 for the mill and neither mill I built were mobile. Just rigged up sled frames with H beams, so it could be dragged around. Click to expand... Oh yeah love building things and im quite excited about this one. i cant use the main hydraulic pump as they have built in valving so without disconnecting or bypassing the final drive it will also spin the tracks. i have to make mine mobile as i only have a 5.5ton excavator so it would not be able to pull the skid but that would have been much easier to build if i had a bigger excavator.

Who is the manufacturer of the hydraulic system? I've done inspections on Marooka tracked dumps that used Komatsu engines and hydraulic systems. The Komatsu valves had an extra or auxiliary valve that might be used to power your crusher. Komatsu also made small tracked crushers that I've worked on and appraised that you might be able to model on.

John C. said: Who is the manufacturer of the hydraulic system? I've done inspections on Marooka tracked dumps that used Komatsu engines and hydraulic systems. The Komatsu valves had an extra or auxiliary valve that might be used to power your crusher. Komatsu also made small tracked crushers that I've worked on and appraised that you might be able to model on. Click to expand... not sure who makes the hydraulic system ill clean the pumps and see if i can find any makers codes, what manufacture years were the ones you worked on? do you have a couple pictures? thanks

The 2 links above are probably your two auxiliary pumps.

Search for "pump 1L35DE10B" manufacturer seems to be roquet from Spain

Did you find any numbers on the main pump?

JRK said: Did you find any numbers on the main pump? Click to expand... No I have not looked yet. Will have to wait till the weekend. Thanks for the links

I'm not sure it's a good idea to use the Marooka hydraulics to power it. Cooling could be an issue and if you had a component failure could wipe out the entire system from contamination. I think a separate independent hydraulic system would be better.

naved said: Firstly, does anyone know a good source for parts or rebuild kits for the Yanmar 4T95L-FW? I've been struggling to find much for this particular engine. Click to expand... Try messaging these sellers and asking them for what you need. Amazon.com: SCuteitus 3T75 Overhaul Rebuild Kit Compatible for Yanmar 3T75 3T75HA Engine YM220D YM250D YM226 YM226D Tractor Piston 121550-22020 12155022020 : Automotive Buy SCuteitus 3T75 Overhaul Rebuild Kit Compatible for Yanmar 3T75 3T75HA Engine YM220D YM250D YM226 YM226D Tractor Piston 121550-22020 12155022020: Engine Kits - Amazon.com ✓ FREE DELIVERY possible on eligible purchases www.amazon.com Amazon.com: Overhaul Rebuild Kit for Yanmar Engine 4TNV84T (Bearing Size:Standard) : Automotive Buy Overhaul Rebuild Kit for Yanmar Engine 4TNV84T (Bearing Size:Standard): Pistons & Pins - Amazon.com ✓ FREE DELIVERY possible on eligible purchases www.amazon.com

I'm also in the separate engine camp for all the reasons already mentioned. It also gives you 2 options on driving the jaw, mechanical or hydraulic. Going down the hydraulic road IMHO a hydraulic transmission pump on a closed loop curcuit to drive the jaw would be the best option with another pump to drive the rest. Both pumps should not be electricity operated just to keep it simple Most concrete agitators I've seen use hydraulic transmission pumps to drive the bowl.

I skimmed more than read, but generator and electric drive for crusher an option? I had priced out a tracked unit from China 4 or 5 years ago. Their design included a big diesel genny to power everything electrically instead of hydraulics.