CJ2A Differential

JEEPCAN

MEMBER
1961 JEEP CJ3
4 CYL
4WD
MANUAL
50,000 MILES

I have a 47 CJ2A, putting new brake lines on and noticed when I turn the yoke by hand, the brake drum spins, but put a little pressure on it by hand and it stops spinning even though the yoke is being turned. Should it not be a solid turn on the brake drum when the yoke is turned. See attached video. Thanks.

Video (Click to make bigger)

1 Reply

STEVE W.

MECHANIC
13,452 POSTS

What does the other side do when you touch that drum? In an open differential what you show is normal. In a locking differential rotating the yoke would turn both sides and putting your hand on one side would stop all motion. Now if you can block both sides and still turn the yoke that way then you have an internal problem with the differential.
https://www.2carpros.com/articles/how-a-differential-works