Go BottomKubota L3130 GST shuttle shift question
 | krambull
Join Date: Feb 2004 Posts: 4 Vermont 
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2004-02-06 76107
just purchased an L3130 GST. The operators manual says to "reduce engine speed to low idle before shifting the shuttle shift lever." This sounds a little cumbersome. I ran the machine today between 1800 and 2100 RPM using the clutchless shuttle to change directions and things seemed to work OK. If what the manual says is really what you need to do, then you have to lower the rpm to a "low idle" with the throttle control on the steering column, then use the foot throttle to raise the throttle while in operation, then use the foot throttle to reduce RPM, then make the clutchless shuttle shift. Then, if I need to use my dual brakes I have to shift the throttle control on the steering column back up to operating speed since I don't have a third leg.
My bottom line question is: Is there a problem changing direction using the clutchless shuttle shift when running at moderate to high RPM, even though the operators manual says to do it at low idle?
Thanks
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| DK35vince
Join Date: Feb 2002 Posts: 689 Western,Pa. 
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2004-02-06 76117
Why do you need a 3rd leg. You shouldn't be applying throttle and the brakes at the same time anyway.(waste of brakes).
I never use the hand throttle for loader work. Foot throttle only.
Apply throttle to get to pile, ease up throttle to adjust speed going into pile, apply throttle to get full bucket, reduce throttle/ reverse .If you need the brakes let up throttle apply brakes.
All the commercial backhoes and front end loaders(designed to load all day) that I have used work basically this same way . ....
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 | Murf
Join Date: Dec 1999 Posts: 7249 Toronto Area, Ontario, Canada 
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2004-02-06 76118
I have many GST units, there has never been a problem shifting fore / aft with the engine running at PTO speed, you do however need to pause a little in neutral to allow things to spin down otherwise it's hard on the syncro.'s.
Best of luck. ....
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| krambull
Join Date: Feb 2004 Posts: 4 Vermont
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2004-02-06 76119
I'd need a third leg if I was pushing some material using the foot throttle, and the front end became a little light and I'd need steer the machine slightly with my dual brakes.
You're the second person who recommended using the foot throttle for FEL work.
Thanks ....
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 | Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2004-02-06 76135
We've never had any problems with them coming apart and I know I've seen people shifting at full throttle. The fact of life of any unit any time you can lower the throttle during a shift will increase the longevity of it's life! ....
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 | jarndt
Join Date: Dec 2003 Posts: 351 Northern Virginia
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2004-02-06 76143
I noticed a similar instruction in my BX1500 manual for engaging the mid PTO. Said to slow down the engine before engaging the PTO. Would I risk breaking something by engaging the belly mower at full throttle? It also says to only run the mower at full throttle. Suggestions?
....
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 | shortmagnum
Join Date: Nov 2003 Posts: 848 Wisconsin 
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2004-02-06 76144
It would seem that the issue with the GST is an inability to change the engagement time for varying engine RPM. At high RPM with any clutched vehicle you would slip the clutch more (more engagement time) if you were reving the engine. If that time is fixed with the GST, it would have to put more stress on all components in the drive line at high RPM than at reduced RPM. ....
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| Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2004-02-07 76264
You can shift the pto in at full speed if you want. The shock load will hurt the mower as well as the clutches. It's your call they just give you guidelines for longevity! The same holds true for the Glideshift transmission. We do have people shifting at or near full throttle for different reasons. It really is your call. You can also start off with a gear drive car or truck at full throttle to and your tire dealer will love you! ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2004-02-08 76319
Thanks for the reminder guys! My blower chute clogged several times yesterday when I forgot to run the pto long enough to clear the chute after stopping. I believe I forgot to reduce rpm when re-engaging the pto--not good practice at all. ....
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| krambull
Join Date: Feb 2004 Posts: 4 Vermont
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2004-02-10 76553
Thanks for all the feedback. Art, would your recommendation be that when running at PTO speed to use the clutch to change directions, say ,if I'm mowing with the machine?
On the GST, the clutch doesn't disengage the PTO, so I won't disengage the mower.
Thanks ....
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| Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2004-02-10 76569
When I'm operating a gear drive in the situation you ask I would be on the foot throttle from about 100 foot away from the turn around and throttle down by foot to near an idle and the back up after the direction change. It's not that it won't do it,but for how long. Any time you are shifting the lower the rpm the less the clutch or clutches have to slip. ....
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| DK35vince
Join Date: Feb 2002 Posts: 689 Western,Pa.
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2004-02-10 76597
Changing direction at high RPM's doesn't save any time, just adds a lot of unnecessary stress and wear ! ....
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| shortmagnum
Join Date: Nov 2003 Posts: 848 Wisconsin
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2004-02-11 76620
This is again why the foot throttle comes in so handy. Reducing RPM on the shift saves the drive train. Reducing RPM when you're operating the loader under no-load conditions saves hydraulic ram seals.
Dave ....
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