L345DT hydraulic problems

rbargeron

Well-known member
Lifetime Member

Equipment
L5450, L48, L3250, L345 never enough attachments
Jul 6, 2015
1,171
237
63
western ma
If you discover stripped splines, there's something I'd try before shelling out for a new pump.

Loctite 660 Quick Metal is made for repairing stripped splines - and it actually works !
The small size tube of it would be plenty for a pump spline repair - clean both parts thoroughly, put some on the splines and put a couple bolts back in to line it up during cure.

I tried it on an ATV rear axle end spline that had stripped out the cast iron brake drum hub. I was skeptical of how it would hold up - the axle has no differential so making turns on dry pavement requires spline strength. Despite my doubts it has held up in service about a year now - seems to be working fine. Must be some tough stuff.

I went back and looked at this video - which is a less-demanding application but indicates the stuff's potential. A handy aspect is it's cure is anaerobic - doesn't need air to cure - it likes an absence of air (like inside a splined connection).

Might be a way to save hundreds if your splines are slipping.
Dick B (no connection to Loctite or Amazon)
 
Last edited:
  • Like
Reactions: 1 user

Carlaisle

New member

Equipment
L345DT
Apr 23, 2023
8
0
1
Required
No progress on this investigation to report yet. Everything i attempted this weekend ended up in worse shape than it started, so this is being postponed lest a bolt break off in the block or something even less desirable should occur.
 

Carlaisle

New member

Equipment
L345DT
Apr 23, 2023
8
0
1
Required
I appreciate the quality of Kubota engineering and construction, but there is room to improve on serviceability...

The pumps have been removed and the splines appear in essentially perfect condition.
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
30,177
6,346
113
Sandpoint, ID
I appreciate the quality of Kubota engineering and construction, but there is room to improve on serviceability...

The pumps have been removed and the splines appear in essentially perfect condition.
You are working with a 45 year old tractor, things have changed since then. ;)

Since the pump is out I would get it checked by a hydraulic shop.