Foton 254: What does the mutual lock lever do?

[D0TC0M]

I have my cab off to fix the shuttle linkage issue I was having and I was looking at the clutch linkage and noticed that on the clutch linkage there is a rod that connects to the transmission right where the rear differential mates with it. I can find nothing in the service manual other than they call it a "mutual lock lever". I'm assuming that this is some sort of lock to prevent you from shifting gears without pressing the clutch. Am I correct?

 

[RonMar]

Thats weird. I am assuming you are talking about the left side of the tractor? Usually there is only one linkage on the clutch pedal which connects to a lever toward the front which disengages the clutch when the pedal is depressed. Your pedal has 2 rods comming off it? Are you sure you are not confusing the left hand brake pushrod? If you are, there will be a similar pushrod in the same place on the other side of the transmission housing(right brake pushrod). The clutch and brake pedals probably share a common pivot like on my Jinma 254. The left side brake pedal pivot passes under the transmission to connect back to the left brake assembly alongside where the trans and rear diff meet. The clutch pedal shares the pivot shaft with the left brake pedal.

The term "mutual lock lever" sounds like a rear locking differential control lever to me. On my 254 that is on the left side of the trans, above the floorboard (right below my right thigh when seated)

 

[D0TC0M]

The differential lock is on the right side on mine. You press the lever inside the cab with your right heel. The linkage I am talking about is definitely connected to the clutch linkage. I'll get a picture and post it within an hour. Thanks for posting

 

[D0TC0M]

Here is a picture of the linkage in question. I highlighted the linkage in the top image so you can reference it in the bottom image.

 

[jacques54]

Hi Dotcom,

This system is for locking or unlocking the fork shaft in the transmission.

When you push the clutch pedal, the little upper shaft turn and the grooves in it let lift the little rod and balls that run on the shaft fork, making you shift the gear selected. Then when you release the clutch it lock in the gear selected also.

For the shuttle shift, if it is for a too much play, could you use those end ball Aetna - Linkage Products, Ball Joints, Rod End Ball Joints, Spherical Rod End Ball Joints, Spherical Ball Joints, Ball Joint Assemblies, Spherical Linkage, Spherical Linkage Assemblies to replace the lower actuator lever. ( If it is like the one on mine?)

Jacques

 

[D0TC0M]

Thanks Jacques thats what I figured

 

[D0TC0M]

As far as the shuttle shifter since it was new it always was hard to put in reverse. I found the design of linkage was the problem. The shuttle linkage on the cover of the transmission is slotted and the linkage of the rod end coming from the cab that operates shuttle linkage was too short. I cut it and lengthened it by 1/2" it now works perfectly.