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For you guys with small CAT rollers

Vetech63

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
6,424
Location
Oklahoma
This little guy was throwing me curve balls yesterday for 2 hours. No travel either direction on this CB34. I started off with the electrical and couldn't find anything wrong, everything in perfect order. So I start checking the charge pressure...……….perfect at 380 PSI. I even go to the manipulator control pressure line to make sure I have flow...…...yep it has flow. Had me scratching my head at this point o_OCB34-3.jpg
 
Vetech63

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
6,424
Location
Oklahoma
I decided to pull the neutral/park brake solenoid valve, everything looked good...…….until I checked to see if it was stuck. It wasn't stuck.....the stem inside the cartridge had broke! It was just kind of floating in there.CB34-1.jpg
Too small for a good pic of the broken stem.
 
John C.

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,870
Location
Northwest
Occupation
Machinery & Equipment Appraiser
Actually I'd like to see a category about great troubleshooting repairs. It was something I tried to get going at the Komatsu dealer years ago. I was running into the same issues time and again and when getting together with other mechanics found they had run into the same thing as well. I though something like a news letter between employees would have been great. But that was in the days of paper, no cell phones or internet so the thought remained just that.
 
mg2361

mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,133
Location
Pennsylvania
Occupation
Equipment Mechanic
John C. said:
Actually I'd like to see a category about great troubleshooting repairs. It was something I tried to get going at the Komatsu dealer years ago. I was running into the same issues time and again and when getting together with other mechanics found they had run into the same thing as well. I though something like a news letter between employees would have been great. But that was in the days of paper, no cell phones or internet so the thought remained just that.
Click to expand...

I agree a category to show troubleshooting successes would be a good idea for knowledge sharing. Our company actually does something like that. We have monthly service meetings and find out about difficult issues mechanics had and solved from all the branch stores. We also cover all the latest service bulletins from the manufacturer to keep us abreast of what issues they are seeing so we mechanics are aware of them in case we run into that issue.
 
L

LN Pipeline

Well-Known Member
Joined
Feb 21, 2019
Messages
155
Location
Montana, USA
What did this solenoid valve cost? I’m assuming that’s a new coil that came with it?

I had to replace a solenoid valve on my JCB that looked identical to this, and JCB charged me $605 dollars. That seemed way out of line.
 
Vetech63

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
6,424
Location
Oklahoma
A
LN Pipeline said:
What did this solenoid valve cost? I’m assuming that’s a new coil that came with it?

I had to replace a solenoid valve on my JCB that looked identical to this, and JCB charged me $605 dollars. That seemed way out of line.
Click to expand...
round $300 if I remember right.
 
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