I'm working on a cat MM55SR-2. I think someone else made it and cat put there name on it. Anyways its my friends machine and basket case he adopted and im trying to fix the loose ends. it was pretty bad and I kick myself for not getting good before pics. I'm really hoping someone on here might possibly have one of these for an example and would be willing to take pictures to show me what's missing. It's pretty much all electrical. I will try to post questions individually. Here's a picture of the machine itself.
Looking for what wires go to this. And what is it's function?
I'm wondering if these 2 wires go to the above pedal switch?
Not sure how all the stuff under the seat gets mounted
This is the left side of engine compartment behind operator seat. I can see that it's missing something here. There's a mark left behind where a component used to be.
You need to be posting in the Compact Excavators section. I'll ask for it to be moved to somewhere you might get more responses.
Thank you, I'm new! Lol
If I’m not mistaken there are a couple of members who specialise in the MM55SR, which is a good thing because there is no information whatsoever about it on the Cat system….!!
That is good! And I didn't find much anything anywhere myself. Thank you for your help
Need to also hook up this safety switch. Maybe that is what this thing circled in red is? It's below that area and He told me it wouldn't start till it was looped witch makes sense to me so maybe I answered my own question on this one lol.
Also have these 2 plugs below the other open plugs in the engine compartment.
Bump Lol
I would suggest to do a forum search for "MM55SR". It threw up 6 pages of hits for me, including this one - HeavyEquipmentForums
Thank you very much!
Think that would be the high/low speed switch for travel
Thank you! that's another lead.
Mitsubishi MM55SR
Thank you! That answers another mystery
Ill be going over too it on Wednesday. I ordered that glow plug timer and get to put it then and look at high and low speed wires. Not sure at all what colors they are or where they come from. I'll probably be touching wires and hoping for the best lol. Thank you @Nige & @JDC21 for your help
photo1 monitor mounted on right hand side console " 2 part of engine speed control, mine is not used, uses cable to governor " 3 control computer mounts under seat (mitsubishi) " 4 another shot of engine speed control Member Graham Hamilton has schematics as well as other info on his web site: http://www.woodandtrees.co.uk/ a little hard to find, but it is there. good luck!
Got glow plug timer in
Last wires in question for this area are these. Labeld #50 #53 orange with red blotches #54 yellow with red blotches
those wires mentioned above are here Left side of engine compartment
Speed switch on floor might go to these wires? But not totally sure. *First Pic shows the switch and the wires I think go to it. *Second Pic is the valve they lead to. *the area shown in picture #3
Thank you! @JDC21 Looks like it uses 2 relays side by side. Now I can fix that. It starts and runs good without it currently because its warm out. But will like to make it complete.
Did you look at the thread I linked in Post #13 on Page 1.? http://www.woodandtrees.co.uk/ has the electrical schematics for a MM55SR. Check it out.
on the speed switch- one wire goes back to the 12v fuse panel. Take a meter and ring it out. The other wire should go to one of the wires at the solenoid, the other wire on the solenoid should go to ground. On the switch, I would ring it out and make sure it is good, no ground and operates properly.
Im sorry i didn't respond to the earlier post. Previous to that I did find it dig into it some. I found the Chinese manual and downloaded it. It gave actual part numbers and good pictures. That's how I discovered the missing glow plug timer.