Traction Hard to use diff lock

   / Hard to use diff lock #1  

Lowrider2120

Silver Member
Joined
Dec 14, 2016
Messages
164
Location
North Idaho
Tractor
Kioti ck3510HST SE Cab, Kubota BX1500D
Just bought (19 hrs) a CK3510 HST SE with cab. Had 40 CY of fill delivered to my shop build site today and I'm having a devil of a time making the rear diff lock engage. The lever is not very long anyway but when I can get boot heel on it, it's a bear to depress and seldom engages the lock. Am I getting weak in my old age or are the new tractors really stiff and hard to use?
 
   / Hard to use diff lock #2  
Have you tried rocking the tractor back and front a little bit while stomping on the lever?
My ck27 hst was hard to get to lock at first.
 
   / Hard to use diff lock #3  
Hello Lowrider2120, 2 things, 1st, put wd40 or some other penetrating oil on the shift where it goes into the trans. It may not have enough grease from the factory.
2nd, when you want engage diff lock turn left or turn right to make the teeth line up for the diff lock to engage. Driving in a straight line will not let the teeth mesh, so the diff lock won't engage.
 
   / Hard to use diff lock #4  
Why are you trying to forcibly engage it? Seems it would engage easily in a situation where it is needed, not so much if conditions don't merit it?
 
   / Hard to use diff lock #5  
Square1, that was my thought also. I one rear wheel is slipping - the diff lock should engage easily. No slippage, no need for the diff lock, engagement won't be so very easy. Just don't attempt to engage the diff lock when one rear wheel is spinning wildly.
 
   / Hard to use diff lock #6  
Mine was the same way but has gotten easier to engage now that I'm at 50 hours. Like others said it will engage easier with wheel slip.
 
   / Hard to use diff lock #7  
Not familiar with your specific tractor.

Generally the pedal activates a spring loaded mechanism to engage the diff lock. Holding the pedal down doesn't mean it's engaged. When one wheel slips the tensioned mechanism will engage. Same principle applies when you remove your foot from the pedal. Mechanism will disengage when tension is removed. Most pedals are difficult to depress. The pedal spring is generally strong. This is to prevent you from accidentally engaging the mechanism. It should be somewhat difficult to engage.
 
   / Hard to use diff lock
  • Thread Starter
#8  
Tried everything except the WD 40 spray which I'll do this morning. Tried stopping the engine too...no joy. With the engine off I can barely push the lever down with my hand. I'll soak the shaft some and see if that improves things. Good to hear it improves with age like a good sippin whiskey!

Thanks folks for the replies!!
 
   / Hard to use diff lock #9  
I've not tried it, but I believe I would have difficulty pushing the diff lock lever down by hand on my Kubota. When using it I have to put considerable downward pressure on the lever with my heel. To the point of lifting myself slightly in the seat.
 
   / Hard to use diff lock
  • Thread Starter
#10  
Guess I'm spoiled by the Fords I've owned in the past...always easy. My little BX has a lever forward on the floor and works as it should...easy to use and instant "two wheels driving".

My thought is the spring is too strong on the CK but I'll give it a chance to loosen up some before going that route...if I can get it to work.
 

Tractor & Equipment Auctions

2016 John Deere 5075E 4wd Tractor (A50490)
2016 John Deere...
2006 Ford F-150 Crew Cab Pickup Truck (A48081)
2006 Ford F-150...
2025 Kivel 48in Forks and Frame Skid Steer Attachment (A49346)
2025 Kivel 48in...
2022 Club Car Tempo Golf Cart (A48082)
2022 Club Car...
2018 Chevrolet Bolt EV Hatchback (A48082)
2018 Chevrolet...
2006 Isuzu NPR Box Truck, VIN # JALB4B16567020383 (A48836)
2006 Isuzu NPR Box...
 
Top