4WD does not fully disengage

[LouF]

'93 K1500 (floor shift) does not fully disengage. It has a rapping/knocking noise. The thermal actuator is new(ish); it worked fine when it was new. Is this a weak actuator, something sticking, hub, half-shaft or something else?

 

[Schurkey]

'93 K1500 (floor shift) does not fully disengage. It has a rapping/knocking noise.

Rapping/knocking noise from WHERE? Transfer case? Front differential? Rear axle? One or both driveshafts? Engine?

Rapping/knocking could be from the radio, if tuned to an ethnic station.

 

[LouF]

Up at the front end. Its either in the diff., at the half-shaft or hub. I can't tell anymore specific than that, but it is when its trying to come out of 4WD.

 

[LouF]

Anyone else have an idea?

 

[Chewy11B]

Well easiest way would be to simply unscrew the actuator and see if changes. Probably in there.....

 

[LouF]

Well easiest way would be to simply unscrew the actuator and see if changes. Probably in there.....

Good idea. Would fluid come out?

 

[Chewy11B]

Shouldn't leak much if any.

 

[LouF]

Shouldn't leak much if any.

Thank you.