| Re: [GMCnet] Bogie Pins & Bushings [message #248328 is a reply to message #248302] |
Wed, 23 April 2014 22:14   |
Dennis S
Messages: 3046
Registered: November 2005
Karma:
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Senior Member |
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| powerjon wrote on Wed, 23 April 2014 18:34 |
Rob,
That’s not the flex of the arm which we all see and as you know makes the wheels look odd at times. Your right, 0.050 at the end of the spindle is not that much play at the pin bearings. I would consider that very conservative. If anyone else has any data lets get it posted here on the net or on Gene’s site.
JR
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Not sure we are talking about the same thing...but here is from Gene's site, a quote from Denny Allen.
QUOTE
BOGIE PINS
Another variable from coach to coach is the wear on the rear pins. I have a coach here that had a mind of its own according to the owner. The rear pins were very loose so the coach was riding on four casters back there. The easiest/best way to check and get a repeatable measurement is: Support the coach under the rear suspension mounting bracket at approximatly the correct ride height. Loosen all lug nuts on both wheels. Release all air from the air bag. Jack up the suspension arm only--just enough to get the wheel off.
With a piece of wood, standing on end, support the end of the control arm at the spindle end. Move the spindle end of the arm towards and away from the frame and measure the total movement with a tape measure. GM Service Bulletin #75-TM-4 states 1/8" is maximum.
A big job to fix but this coach was about 1/2" movement on three of the four wheels. I had to bush the inboard end of the bracket, replace pins, bushings and top hats. Denny
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End QUOTE
The MM calls for 25 lb of torque on the pin nuts -- if I go to 55 lb all the "slop" in my swing arms goes away -- but I reset to 25 lb -- not sure what overtightening the pin nuts might affect adversely.
Dennis
Dennis
Dennis S
73 Painted Desert 230
Memphis TN Metro
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