CDL & Diff Locks (1 Viewer)

[BTLSHP]

Applying current to the switch will not do anything. it is just a switch. It allows current to pass through when it is closed.

Just getting movement of the "ball" (plunger) is not the problem. In fact I have never seen on which will not move. When the TC lock (or the axkle lock) engages is HAS to move. It is just not passing current when it closes. Over time the electrical contact surface(s) within the switch can deteriorate. Sometimes burnt, sometimes just dirty with trace amounts of residue from the gear lube that is in between the surfaces every time they close. Sometimes rapidly working the plunger in and out a LOT may clean the surfaces so that the switch functions. But it will often be not long before is it balky again.

FWIW, I have not heard much negative feedback on the beck arnley or other aftermarket switches. But a few of the guys who are local to me have not had good luck with them. Getting OEM or denso units has always worked perfectly.

Mark...

Okay, I have ordered a new one that should be here in a week from a Partsouq order I was building. I may play a bit with the exiting one since it is only hand tight.

 

[BTLSHP]

Ok, the ball/plunger moves freely but my ohm meter registers an open circuit no matter where the ball is so I am guessing a new sensor is in order.

 

[BTLSHP]

The new sensor did the trick, it went in easily and all the diffs function properly. Exercise of the system will be in the care and feeding notes going forward….