Ride Hight/ Torsion Bars

[Chaz]

I know this has been brought up before but my truck does not sit level. When you view from the front it is lower on the N/S when viewed from the back again lower on the N/S. I took it up to ATS yesterday got to have a new exhaust, while on the ramps I could see that it is defiantly leaning to the N/S. I do not pretend to know much about mechanics on cars other than checking oil etc but if the front N/S is low would that affect the opposite corner ie the O/S rear and subsequently raise it ? When the truck was raised on the ramps I had a look at the adjusters for the Torsion bars and there is more thread showing on the O/S than the N/S. I have read the section in the manual on the torsion bar Removal, Inspection and Installation as below. Now are these measurements for if you were installing new bars ? Also it states Adjustment of anchor arm adjusting nut is in tightening direction
only.


I have read the threads on here regarding Torsion bars but call me thick I am still confused understanding it. I do not want to raise the suspension just want the normal ride height but want truck to sit level. When I have had the truck serviced I have mentioned this level problem before, they say they have done it but its still not right, they say it OK just me being over fussy. Ma-be I am but if somethings is not right then it bugs me and I have to live with it. Either they cant be bothered cause it is not there truck, or they know as much as me and don't know how to do it.

I would appreciate any help on this as its been like this now for a couple of years and I would like to put it right. I myself do not think I am being to fussy. Its my truck and I love it and I care for it more than any mechanic would.


INSTALLATION AND ADJUSTMENT

Adjustment of anchor arm adjusting nut is in tightening direction

only.

Do not adjust by loosening anchor arm adjusting nut.

1. Coat multi-purpose grease on the serration of torsion bar

spring.

2. Place lower link in the position where bound buffer clearance

“C” is 0.

Clearance “C”: 0 mm (0 in)

3. Install torsion bar spring with torque arm.

Be sure to install right and left torsion bar springs correctly.

4. Set anchor arm.

Standard length “G”

TD27Ti engine:

38 - 49 mm (1.50 - 1.93 in)

ZD30DDTi engine:

40 - 51 mm (1.57 - 2.01 in)

5. Install snap ring to anchor arm and dust cover.

SFA549

SFA854

EFA009

FRONT SUSPENSION

Torsion Bar (Cont’d)

FA-31

Make sure that snap ring and anchor arm are properly

installed.

6. Tighten anchor arm adjusting nut to attain dimension “L”.

Standard length “L”:

77 mm (3.03 in)

7. Bounce vehicle with tires on ground (Unladen) to eliminate

friction of suspension.

8. Measure vehicle posture “H”.

H = A − B mm (in) “Unladen”

Refer to SDS, FA-39.

(1) Exercise the front suspension by bouncing the front of the

vehicle 4 or 5 times to ensure that the vehicle is in a neutral

height attitude.

(2) Measure vehicle posture ... Dimension “H”.

(Refer to SDS, FA-39.)

SFA185A

YFA014

YFA015

SFA965

NFA015

FRONT SUSPENSION

Torsion Bar (Cont’d)

(3) If height of the vehicle is not as specified, adjust vehicle posture.

(Refer to SDS, FA-39.)

(4) Check wheel alignment if necessary.

(Refer to SDS, FA-39.)

9. If “H” dimension is not within the specified value, readjust

vehicle posture using anchor arm adjusting nut

 

[lacroupade]

Its incredibly simple.

Underneath the truck at the end of each torsion bar (round about the back of the front door) you'll see two adjusting nuts with lock nuts on top.

You can adjust while front suspension is jacked up, as it takes the weight off, but you don't get to see the effect of your adjustment til you drop it again.

Soak in WD40 overnight, then just loosen off the lock nut on top, then turn the nut (from memory, clockwise to raise the car and anti-clockwise to lower it, but someone will confirm)....just stand up and check what its doing as you go...takes quite a few turn of the nut to make any difference - just measure the height between wheel arch and floor to detect change.

Dont forget to redo the locking nut when youre done, as well as the fact that it takes a day or two for the suspension to settle so it might need to do it again to finally get it dead right.

Actual front suspension height is determined in the manual by a very difficult-to-measure differential in height between the inner and outer ends of the lower wishbone. Its far easier to adjust it so the front wheelarches are a couple of centimetres loower than the rears, to allow for towing (which settles the back a bit).

Its seriously a piece of cake.