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PART 20-1- MAINTENANCE OPERATIONS
20-21
the front wheels in the straight-ahead
position. Run the engine so that
the power steering control valve
will be in the centre (neutral)
position if so equipped. Measure
the distance between the extreme
front and also between the extreme
rear of both front wheels. The differ-
renee between these two distances is
the toe-in. Specifications are in
Part 3-7.
·
Front Wheel Turning Angle.
When the inside wheel is turned 20°,
the turning angle of the outside
wheel should be as specified in Part
3-7.
The turning angle cannot be
adjusted directly because it is a result
of the combination of caster, camber,
and toe-in adjustments and should
therefore, be measured only after
these adjustments have been made.
If the turning angle does not measure
to specifications, check the spindle or
other suspension parts for a bent
condition.
Mter front wheel alignment factors
have been checked, make the neces-
sary adjustments. Do not attempt
to adjust front wheel alignment
by bending the suspension or
steering parts.
CASTER AND CAMBER
ADJUSTMENTS
Caster is controlled by the front
suspension strut (Fig. 46). To obtain
negative caster, loosen the strut front
nut and tighten the strut rear nut
against the bushing. To obtain posi-
tive caster, loosen the strut rear nut
and tighten the strut front nut
against the
bushing.
Camber. Camber is controlled by
the eccentric cam located at the lower
arm attachment to the side rail
(Fig.
46). To
adjust the
camber,
loosen the
eccentric bolt nut and rotate the bolt
and eccentric clockwise from the high
position to increase camber or coun-
terclockwise to decrease camber.
Mter the caster and camber have
been adjusted to specification, torque
the lower arm eccentric bolt nut and
the
s_
t rut front nut to specification.
TOE-IN AND STEERING WHEEL
SPOKE POSITION ADJUSTMENTS
Check the steering wheel spoke
position when the front wheels are
in the straight-ahead
position.
If the
spokes are not in their normal posi-
tion, they can be properly adjusted
while toe-in is being
adjusted.
1. Loosen the two clamp bolts on
each spindle connecting rod sleeve
(Fig. 47).
SLEEVE
CLAMP BOLTS
noaa-•
FIG. 47- Spindle Connecting Rod
Sleeve
FIG. 48-Spindle Connecting Rod
Sleeve Clamp Position
2. Adjust toe-in. If the steering
wheel spokes are in their normal
position, lengthen or shorten both
rods equally to obtain correct toe-in
(Fig. 49). If the steering wheel
spokes are not in their nortmll posi-
tion, make the necessary rod adjust-
ments to obtain correct toe-in and
steering wheel spoke alignment.
3. Recheck toe-in and the steering
wheel spoke position. If toe-in is
correct and the steering wheel spokes
are still not in their normal position,
turn both connecting rod sleeves
upward or downward the same
number of turns to move the steering
wheel spokes (Fig. 50).
4. When toe-in and the steering
wheel spoke position are both correct,
torque the clamp bolts on both con-
necting rod sleeves to specification.
The sleeve position should be
as shown in Fig. 48 when the
clamp bolts are tightened.
TURN DOWNWARD TO
TUIN
TUIN Uf'WAID TO
INCREAsE ROD l.fNGTH
TUIN UPWARD
DOWNWARD
INCREASE ROD lfNGTH
TO DECREASE
TO DECREASE
~'6;~-;
C«fl
Lin-HAND SLIIVI
liGHT -HAND SL11V1
P1037-1
FIG. 49- Spindle Connecting Rod Adjustments
WHEN TOE
.
IH IS CORRECT
TURN IIOTH CONNECTING ROD
SLEEVES UPWARD TO ADJUST
SPOKE POSITION
WHEN TOE·IN
IS~
NOT CORRECT
LENGTHEN LEFT ROO TO
INCREASE TOE ·IN
SHORTEN RIGHT ROO
TO DECREASE TOE .IN
TURN BOTH CONNECTING ROD
SLEEVES DOWNWARD TO
LENGHTEN RIGHT ROO
TO INCREASE TOE -IN
ADJUST BOTH RODS EQUALLY TO MAINTAIN NVRMAL SPOKE POSITION
FIG. 50- Toe-in and Steering Wheel Spoke Adjustments
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