Traction CK20 Break the wheels free

[laurencen]

the CK20 gear will bury tires in any range, never had the motor bog down pulling, all four wheels spin even with the backhoe on

 

[gkm]

the CK20 gear will bury tires in any range, never had the motor bog down pulling, all four wheels spin even with the backhoe on

Ditto that!

 

[dfkrug]

My CK20 HST I cannot break the tires free.

Since the engine bogs in LOW range, I will bet that your brakes are
dragging, or the 3-pt cylinder is in relief. Can you manually push the
tractor when it is in Neutral on level ground?

The CK20 HST is a great tractor and I have had no problems in LOW. HI
range shows the tractor is somewhat underpowered for its weight. This
tractor would win the Best Buy Award with only a bit more power.

 

[IslandTractor]

The CK20 HST is a great tractor and I have had no problems in LOW. HI
range shows the tractor is somewhat underpowered for its weight. This
tractor would win the Best Buy Award with only a bit more power.

Don't need more power as much as a mid range HST. A three speed HST is what it needs. I am a bit surprised that after Kubota updated their B series with a three speed HST last year that Kioti has not followed.

I always found the high range useful only for travel on flat surfaces. The low is of course capable of most anything in the way of grunt you have any right to expect of a 21hp tractor. What is missing is a mowing range between those two. I got tired of mowing in low.

 

[CBB]

Our elevation is 2250 feet.
Oil is clear in the HST
I can't believe you can break your tires free. All this time I just thought it was the tractor because no way can I break the tires free.
I am going to send it to the shop and will post back what they find out.
Thanks much all.

You know I was thinking - could someone have put/added the wrong oil in the transmission? Sounds odd, but gear oil doesn't flow like UTF. We use CASTROL UTF and a 10% additional LUCAS Hydraulic Oil Booster. Just a simple thought you have already checked.

Seriously - One other thing you can check. Find a guy with a Dyno. It should be putting out approx 16 - 17 HP at/through the PTO. HP and Torque directly effect Hydrostatics - The dyno will show what it is producing. HMMM!

If it is not you can change/adjust the timing of the injection pump. You may think this is crazy - but sometimes the higher the elevation (Your elevation up around 1400 1500 ft?), a timing change (fuel pump) may be needed. Maybe it was just set/adjusted wrong from the factory. One shim here one shim there kind of thing.

It may be advantagous to check the injection pump and injectors also. Quick $100.00 at the Fuel Pump shop is cheaper than the Hydrostatic system.

I will have to dig you up the timing procedure. I don't have it off the top of my head. If you want it let me know and I'll get it for you.

 

[dfkrug]

Don't need more power as much as a mid range HST. A three speed HST is what it needs.

I don't think you would really gain much with another gear range between
H and L. The gear ratio for H should be lowered a bit, or just give it a
bigger engine.

I have had 3 different HST tractors that weighed very close to 2000#
naked: B21, CK20, and JD955. The B21 is the only one with a 3-range
gearbox, and I found the H range to be more unusable than the CK20's.
The 955 had only a 2-range gearbox, but a 33hp engine. That tractor
was amazing....tons of power...very strong HST. I could always spin
the tires in L, even with new AG tires and a 1300# hoe attached.

Like the CK20, I found the major drawback to the B21 was the lack of
power. Kubota has addressed this by going from a 21hp engine to a
26hp engine in the B26, a 25% increase. A 28hp CK20 would be the
bee's knees.

 

[IslandTractor]

A 28hp CK20 would be the
bee's knees.

I wouldn't disagree but I found the 21hp CK20 to be basically well powered for the size, I just missed having a gear higher than low that would allow me to mow in hilly conditions.

I'd never say the CK20 was a weak tractor it is just limited as a mower due to the need to putter along in low gear most of the time. I'd put the CK20 up against any of the sub 30hp B series for ground engaging or FEL tasks but they'd stomp the CK as mowers.

 

[MichiganIron]

We had a CK20 HST with the exact same characteristics as what you are describing. Before you get into anything serious, check and make sure the brakes are completely dis-engaging. We found that there was brake drag on the tractor that was eating up the power. Easy thing to check. Make sure the cam rockers at the rear housings are moving completely with the brake rods, and there's no sticking where they go through the brake case.

Sometimes it's the simple things. Took 15 minutes to free them up, and it ran like a completely different tractor.