m936a2 PTO?

[rumplecat]

The transfer case PTO has a habit of easing out of gear? It is hard to get into gear then it will slip out of engagement, sometimes. The truck is right out of rebuild. The auto throttle control does not engage either. Anyone familiar with this issue?

 

[SLOrazorsedge]

PM M35A2-AZ, he's pretty knowelageable re the wreckers

 

[Csm Davis]

The transfer case PTO has a habit of easing out of gear? It is hard to get into gear then it will slip out of engagement, sometimes. The truck is right out of rebuild. The auto throttle control does not engage either. Anyone familiar with this issue?

The 936 PTO engagement cable is notorious for bending the lever that moves the PTO in and out, which will eventually break the clevis. The lever needs to be reinforced

The transfer case PTO has a habit of easing out of gear? It is hard to get into gear then it will slip out of engagement, sometimes. The truck is right out of rebuild. The auto throttle control does not engage either. Anyone familiar with this issue?

 

[rumplecat]

Thanks, Jeff, does the cable activate the throttle as well?

 

[Suprman]

The auto throttle is controlled by your hand pulling the hand throttle out to the desired rpm. Preferable once the transfer case is in neutral. I find you have to get the pto engagement just right and it snaps in but if it's not quite locked it then it will pop out. I believe the trucks with the 250 engine had some type of auto throttle but the A2 is all I have ever had so I don't know much about the previous variants.

 

[rumplecat]

The TM refers to the auto throttle on the M936A2 and there is a MWO for the 936 & A1

 

[Suprman]

Mine is a 2008 rebuild and no auto throttle. if you did have an auto throttle there would have to be some actuator or mechanism to operate the throttle to the desired rpm with the wrecker boom engaged.

 

[Csm Davis]

All wreckers from M816, M936, M936A1, AND M936A2 are supposed to have the auto throttle. The hand throttle is backup for it and for the front winch PTO. The auto throttle on most is an air cylinder hooked to the regular throttle linkage, I don't know why but many are disconnected, I have found most even work properly when reconnected, not sure but maybe the guys like being more in control with the hydraulics slowed down.

 

[M936 Dave]

All wreckers from M816, M936, M936A1, AND M936A2 are supposed to have the auto throttle. The hand throttle is backup for it and for the front winch PTO. The auto throttle on most is an air cylinder hooked to the regular throttle linkage, I don't know why but many are disconnected, I have found most even work properly when reconnected, not sure but maybe the guys like being more in control with the hydraulics slowed down.

My 936 doesn't have any of that. Not that I'm aware of since it has never auto idled up.

 

[simp5782]

My 936 doesn't have any of that. Not that I'm aware of since it has never auto idled up.

Take a picture of where your pedal comes out of the floor under the cab there is probably an air valve there to push it up like cam Davis said.