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Topic: Slightly pull to the right (Read 555 times) previous topic - next topic

Slightly pull to the right

My coach is slightly pulled to the right. I have to put a constant pressure (note: small) on the steering to correct it.  I understand the road crown, the height and weight of the coach.  Do you accept the fact or have any cure for that?  My ride height is 1/2 inch lower in the front comparing to the rear.  I don't know if it has any effect on the pulling.
Thanks,
Michael
Ex 2001 U295

Re: Slightly pull to the right

Reply #1
Height and weight don't affect steering, road crown will make the coach pull to the right. Ride height differential shouldn't cause pulling either but can cause other issues, Have the alignment checked as it is the most likely to cause pulling problems.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Slightly pull to the right

Reply #2
Agree 1/2" low ride height in front will not cause a pull.  BUT, would adjust that to spec.

Here is the order I would use to determine cause/fix the pull:

 
Could be a brake hanging up-- would be indicated by HEAT at wheel/rotor.

Could be tires-- rotate front tires left to right.

Could be caster.  Right side should 1/2 to 3/4 degree MORE caster than left to account for road crown.

Brett
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Slightly pull to the right

Reply #3
If  it has a STEER SAFE device misadjustment will also cause a pull to one side.
Gary B

Re: Slightly pull to the right

Reply #4
Our coach pulled significantly to the right when we bought it. Wayne at FOT in NAC did an alignment, and it was MUCH better.

My understanding is that differential caster between right and left is established by the shape of front axle. However, the caster of both sides (together) can be adjusted by changing shims. I think that is the primary adjustment that Wayne made to our coach to cause the steering to be more neutral.

Since then, we've had the front end aligned two more times. In each of those adjustments, only the toe was adjusted. The last adjustment of toe lead to reduced wandering.
J D Stevens
1997 U295 CAI 36' Build #5085
2002 Subaru Outback
Motorcade 16869
Bellville, TX

Re: Slightly pull to the right

Reply #5
I rechecked my ride height of the air bags at multiple times/road locations and found that my right front airbag is a half to an inch lower than to the left.  Both rears are the same height or very close. 

Any idea?  I would like to address the ride height first before heading to the alignment shop.

Thanks,
Michael
Ex 2001 U295

Re: Slightly pull to the right

Reply #6
Side to side is controlled by rear. Is the right rear low also?
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Slightly pull to the right

Reply #7
Right rear and left rear are about the same height or very close.

Thanks,
Michael
Ex 2001 U295

Re: Slightly pull to the right

Reply #8
Anything in the front corners that would cause a weight imbalance?  Ever had the coach 4-corner weighed?  Can get it done in Bushnell, FL about 60 miles north of Tampa.

SmartWeigh
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"