Transfer case stuck????Help??????

[dempsy1]

Put a 4 inch lift on my CJ5 Had the front lift on for a couple of weeks and just put the back lift on last weekend pulled out of the garage and It seems my transfer case is stuck it wont shift into or out of any range getting a lot of shaking when I move it?????? Any ideas????

 

[SteelHeadz]

Shaking from the whole jeep or the T.case?

 

[dempsy1]

The vibration mostly seems to be coming from the rear end, or rear drive shaft, but also the transfer case is not shifting. Got a heck of an angle on the rear shaft too.

 

[SteelHeadz]

That could very well be the reason your t.case is stuck.. Correct the angle on the rear driveshaft with a t. case drop and or an angle shim on the axle. While shifting from 2Hi to 4 Hi or 4 Lo, you need to roll a bit to get the shift collar to line up and complete the shift.

 

[dempsy1]

I put the lowering spacers on the skid plate and it seemed to move it down some.....but I'm not real sure about what you are saying to do to the axel??

 

[SteelHeadz]

You can get adjustment angle shims that goes in between the axle and the leaf pack to adjust the pitch of the driveline. Most 4WD shops would have them.

 

[dempsy1]

Ok I,m going to see what I can find--will I need to change my drive shaft or linkage do you think??? I'm planning to also put longer shackles on, I want to clease 35 inch tires

 

[SteelHeadz]

Ok I,m going to see what I can find--will I need to change my drive shaft or linkage do you think??? I'm planning to also put longer shackles on, I want to clease 35 inch tires

You should be fine with the driveshaft unless its pulled out on the splines halfway out already. Do your shackle upgrade first and then measure the final angle that needs to be corrected on the driveline.

 

[dempsy1]

How do I measure the angle I see the shims you are talking about.

 

[SteelHeadz]

A reputable 4WD shop should be able to measure that for you or you could go to Home Depot or Lowes and buy an angle gauge.
When two shafts come together at a common joint, the bend that is formed is called the operating angle. The larger the angle, the larger the amount of angular acceleration and deceleration of the joint. This speeding up and slowing down of the joint must be cancelled to produce a smooth power flow. This is done through the phasing of a propeller shaft and ensuring that the proper propeller shaft joint working angles are maintained.
A propeller shaft is properly phased when the yoke ends are in the same plane, or in line. A twisted shaft will make the yokes out of phase and cause a noticeable vibration.
When taking propeller shaft joint angle measurements, or checking the phasing, of two piece shafts, consider each shaft separately.




Ideally the driveline system should have;

• Angles that are equal or opposite within 1 degree of each other.
• Have a 3 degree maximum operating angle.
• Have at least a 1/2 degree continuous operating (propeller shaft) angle.

Engine speed (rpm) is the main factor in determining the maximum allowable operating angle.PROPELLER SHAFT ANGLE MEASUREMENT


To accurately check driveline alignment, raise and support the vehicle at the axles as level as possible. Allow the wheels and propeller shaft to turn.

1. Remove any external bearing snap rings, if equipped, from universal joint so protractor base sits flat.
2. Rotate the shaft until transmission/transfer case output yoke bearing is facing downward.

Always make measurements from front to rear. Also, be sure to take all measurements while working from the same side of the vehicle.

1. Place Inclinometer on yoke bearing (A) parallel to the shaft Front output shaft(A) Center bubble in sight glass and record measurement.

This measurement will give you the transmission or Output Yoke Angle (A)

1. Rotate propeller shaft 90 degrees and place Inclinometer on yoke bearing parallel to the shaft .Propeller shaft angle measurement (C) Center bubble in sight glass and record measurement. This measurement can also be taken at the rear end of the shaft.

This measurement will give you the Propeller Shaft Angle (C)

1. Subtract smaller figure from larger (C minus A) to obtain Transmission Output Operating Angle.
2. Rotate propeller shaft 90 degrees and place Inclinometer on pinion yoke bearing parallel to the shaft Rear (Input) Angle measurement (C). Center bubble in sight glass and record measurement.

This measurement will give you the pinion shaft or Input Yoke Angle (B)

1. Subtract smaller figure from larger (C minus B) to obtain axle Input Operating Angle.

Refer to rules given below and the example in Universal Joint Angle Example for additional information.

• Good cancellation of U - joint operating angles (within 1°)
• Operating angles less than 3°.
• At least 1/2 of one degree continuous operating (propeller shaft) angle.

 

[dempsy1]

Thanks for your help Im going to do the shims and longer brake lines next weekend!!!