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Mitsubishi mm30sr

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Graham Hamilton

Active Member
Joined
Aug 18, 2019
Messages
31
Location
Scotland
peter squire mm30sr said:
HELLO , MY MM30SR HAS NO POWER TO THE JOISTICKS , TRACS AND BLADE MOOVE BUT NOTHING ELSE.... HELP PLEASE... ALSO MANUAL ?
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Hi Peter,
I have some electric diagrams for the MM50SR which I think is very simiar to the MM30SR, if you give me your email I'll forward them. The tracks and blade use mechanical linkages, everything else is electical/electronic. So the place to start is with the safety lever and the start safety relay under the seat, check for earth faults. Mine has had this problem and it was a bad connection, so suggest you pull off the relay connections and clean them.

Graham
 
StnkyPete

StnkyPete

Member
Joined
Aug 24, 2021
Messages
6
Location
Upper Hutt, New Zealand
I have copies of section Vi and Section VII of what I think is the service manual for an MM55SR if anyone is interested. They contain a lot of information about the electrical side of the machine, wiring diagrams, functional descriptions, trouble shooting and fault codes etc.

Post your email address and I'll send them through. Cheers
 
G

Graham Hamilton

Active Member
Joined
Aug 18, 2019
Messages
31
Location
Scotland
StnkyPete said:
I have copies of section Vi and Section VII of what I think is the service manual for an MM55SR if anyone is interested. They contain a lot of information about the electrical side of the machine, wiring diagrams, functional descriptions, trouble shooting and fault codes etc.

Post your email address and I'll send them through. Cheers
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Hi I'd be interested in what you have. My emal is gandvhamilton@gmail.com
 
F

Fordzilla

Well-Known Member
Joined
Aug 30, 2017
Messages
46
Location
Sooke, BC - Canada
Does anyone know the plumbing for the dual speed tracking? I replaced a drive motor and realized that a previous owner must have changed things up a bit. I have the floor button that just has some wires coming out of it, but I don't know where the wires are supposed to go connect to? Thoughts? (Mine is MM40SR)
 
G

Graham Hamilton

Active Member
Joined
Aug 18, 2019
Messages
31
Location
Scotland
Fordzilla said:
Does anyone know the plumbing for the dual speed tracking? I replaced a drive motor and realized that a previous owner must have changed things up a bit. I have the floor button that just has some wires coming out of it, but I don't know where the wires are supposed to go connect to? Thoughts? (Mine is MM40SR)
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I had a look at section VI of the MM50SR manual p260. It shows the supply coming from the fuse box (10A fuse) to the 2 speed switch then the 2 speed valve and finally to earth. I think yours will be very similar. I'm not sure where the valve is but my guess is it will be under the floor plate. I'll have a look at my MM30SR when I get a chance. Graham
 
G

Gd87

New Member
Joined
Sep 9, 2021
Messages
2
Location
Quebec
Does anyone can send me a mm30sr or similar manual please.
StnkyPete said:
I have copies of section Vi and Section VII of what I think is the service manual for an MM55SR if anyone is interested. They contain a lot of information about the electrical side of the machine, wiring diagrams, functional descriptions, trouble shooting and fault codes etc.

Post your email address and I'll send them through. Cheers
Click to expand...
I would be really interested! If you can send me a copie please. Gd__87@hotmail.com
Thanks a lot
 
G

Gd87

New Member
Joined
Sep 9, 2021
Messages
2
Location
Quebec
Does anyone know where I can buy bottom rollers for mm30sr online? Is there any part number I can look for that will fit ? Thanks
 
J

JDC21

Member
Joined
Feb 2, 2022
Messages
12
Location
NC
StnkyPete said:
I have copies of section Vi and Section VII of what I think is the service manual for an MM55SR if anyone is interested. They contain a lot of information about the electrical side of the machine, wiring diagrams, functional descriptions, trouble shooting and fault codes etc.
Click to expand...

please send me a copy of what you have, jcannon1@triad.rr.com
 
C

clayton S

New Member
Joined
Feb 20, 2022
Messages
2
Location
seattle
Graham Hamilton said:
I had a look at section VI of the MM50SR manual p260. It shows the supply coming from the fuse box (10A fuse) to the 2 speed switch then the 2 speed valve and finally to earth. I think yours will be very similar. I'm not sure where the valve is but my guess is it will be under the floor plate. I'll have a look at my MM30SR when I get a chance. Graham
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i have an mm40sr and having error code 30, do you know what that refers to
 
J

JDC21

Member
Joined
Feb 2, 2022
Messages
12
Location
NC
from info for 55sr problem in spool center 30=boom in, 31=arm in, 32=bucket in, 33=swing in,34=boom out, 35=arm out, 36=bucket out, 37=swing out
I would think spool on hyd valve not being back in center with no demand or feedback error.
best I can do, others may provide better info
good luck
 
J

Jemuel

New Member
Joined
Mar 10, 2020
Messages
3
Location
molalla oregon
StnkyPete said:
I have copies of section Vi and Section VII of what I think is the service manual for an MM55SR if anyone is interested. They contain a lot of information about the electrical side of the machine, wiring diagrams, functional descriptions, trouble shooting and fault codes etc.

Post your email address and I'll send them through. Cheers
Click to expand...
I also have a MM55SR that's reading CPU when I try to boom out or in and won't move everything else works.
Could you please send me the manual pages are talking about.
jimuel@msn.com Thanks
 
G

Graham Hamilton

Active Member
Joined
Aug 18, 2019
Messages
31
Location
Scotland
In the spirit of giving out information on these Mitsubishi MM series excavators (MM50SR, MM40SR, MM30SR) I’ve started to put all my information on my website www.woodandtrees.co.uk which you are welcome to access.

It includes the MM50 electric diagrams, fault finding and error codes that “tool_king” and others have posted, Parts Manual and SL series engine operation, maintenance and service manuals. There is also some other stuff on my own machine MM30SR and information from “IronDino333” on ram seals.

If anyone has more information (or write ups on what they have done on their MM machines) and are willing to share, just contact me via messages and I’ll add it to the site.

Hopefully this is useful.

Graham
 
R

Roman125

New Member
Joined
Apr 23, 2023
Messages
4
Location
Хабаровск
StnkyPete said:
I have copies of section Vi and Section VII of what I think is the service manual for an MM55SR if anyone is interested. They contain a lot of information about the electrical side of the machine, wiring diagrams, functional descriptions, trouble shooting and fault codes etc.

Post your email address and I'll send them through. Cheers
Click to expand...
Can you send the manual for Mitsubishi mm40-55sr please. Here is my mail RomanO_Best@mail.ru
 
M

mudro

New Member
Joined
Apr 25, 2023
Messages
1
Location
Molalla, OR
Downloaded the copies from Graham (Thanks Graham); I also found the section VI and section VII manuals. If anyone comes across or has other information I would appreciate it, even in Japanese. I can translate it.

mrweebo@gmail.com
 
B

BDaechsel

New Member
Joined
May 9, 2023
Messages
3
Location
Alberta Canada
Would you be willing to send the mm 30 manuals ? Having no luck with the boom/stick/curl controls
Bought the hoe not running and not having any luck
 
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