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Caterpillar 304C CR, right track does not move

Nipmuck

Member
Joined
Jan 18, 2025
Messages
21
Location
Holland, MA 01521
Occupation
Self Employed
Update:
To me it sounds like no splines on the motor
You are right, pittsburgh cat man. I found a video of an individual repairing a final drive/travel motor on a Yamar B27 mini excavator.
He bought it with working final drives but the one on the right side suddenly stopped working according to his account.
Turning the sprocket wheel with the track removed made the same noise (at 0:12:00 in the video) as my final drive/travel motor.
Taking the drive/motor apart, the only thing he could find defective was the shaft connecting the motor and the planetary gear. The splines were gone! (at 1:06:00 in the video.)
The video is 1 hour, 47 minutes, and 27 seconds; just fast forward to the timestamps given here to avoid having to watch the entire video. Here a link to the video:

 

Nipmuck

Member
Joined
Jan 18, 2025
Messages
21
Location
Holland, MA 01521
Occupation
Self Employed
Update:
Somebody from the auctioneer called me back in response to my email and asked some questions.
Eventually she stated that somebody from the maintenance department would call me back.
Will keep everybody updated .....
 

Nipmuck

Member
Joined
Jan 18, 2025
Messages
21
Location
Holland, MA 01521
Occupation
Self Employed
Thanks Nige; a representative of the auctioneer called me today again (a female) and requested a video. She stated that she tried to contact the driver delivering the machine but was unsuccessful yet.
I do not know why they would need a video, however, I will make one (today the high was around 16 degrees, the low was -3!)
Maybe I will be able to jump-start the machine tomorow and take a video which I will post here.
 

Nipmuck

Member
Joined
Jan 18, 2025
Messages
21
Location
Holland, MA 01521
Occupation
Self Employed

Here is the email I sent just moments ago to McGrew auctions in PA:

Per your request, here the video.
You see the action of the travel controls and how it moves the excavator to the right side instead of going straight due to the right final drive not working.

I also only activated the travel control on the right hand side backwards and forwards and the excavator does not move at all.

I hope this is what you need.

Best,

Peter

________________________________________________________________
Peter Frei, 101 May Brook Road, Holland, MA 01521-2020 USA
phone/text/whatsApp (413) 245 4660
 

Nipmuck

Member
Joined
Jan 18, 2025
Messages
21
Location
Holland, MA 01521
Occupation
Self Employed
McGrew auction seems to live up to their claim, that they have "Old Fashioned Business Values, if something is wrong, we will do our best to make it right."
A representative of McGrew called me back and after some discussion, we agreed on the following, in my opinion fair solution consistent with their claim to do their best to make it right:
Since moving heavy equipment is expensive and I did not want to be unreasonable, I offered to change the final drive/travel motor myself and McGrew auction would pay me $2,500 so I can buy an after-market part.
I will keep you guys informed and will report about my experiance changing the final drive/travel motor. It will be in the spring when the weather allows to do the work outside.
 
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