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5. When the boss is spread, slide the pitman arm off the steering gear shaft.
6. If vendor supplied mark does not line up with mark on the steering gear output shaft; cross out
vendor supplied mark on pitman arm with a small chisel or punch and hammer.
7. Make a new mark to line up with mark on the steering gear output shaft.
If the same pitman arm is to be reinstalled onto the steering gear, clean the end of the steering gear shaft
and the outside of the pitman arm so that the alignment marks on each are visible.
The pitman arm may be installed as follows:
1. Rotate the output shaft on the steering gear
so that the mark on the output shaft is per-
pendicular to the input shaft.
2. Install the pitman arm on the steering gear
output shaft so that the marks on the splines
align.
3. Install the pitman arm clamp bolt, nut and
hardened flatwasher on the nut side. Be sure
there is no spreading wedge left in the pit-
man arm boss before torquing the pitman
arm clamp bolt to 280-325 ft. lbs.
4. Reinstall the drag rod onto the pitman arm.
(Torque 120-170 ft. lbs.)
FRONT AXLE STOP AND
STEERING GEAR AUTOMATIC POPPET ADJUSTMENTS
To adjust the automatic poppets and axle stops, do the following.
1. Adjustment of axle stops and steering gear pressure relief valves (poppet valves) should be made
after toe-in has been set on the front axle.
2. With front tires on turn angle plates, center left front tire in the straight ahead position using align-
ment equipment. Set turn angle plates to zero.
3. The right-hand axle stop should be adjusted so that for a full right-hand turn, the turn angle plate
under the right-hand tire reads 42 + 0.5 degrees. The left-hand axle stop should be adjusted so that for
a full left-hand turn, the turn angle plate under the left-hand tire reads 42 + 0.5 degrees. Lock axle stop
jam nuts after adjusting. If necessary, the pitman arm may be i (1) spline from original
alignment mark to obtain applicable degree of wheel cut in both directions.
4. Remove turn angle plates. Verify that axle stops contact axle pad at full right-hand and left-hand
turns. It may be necessary to relieve tire flex by rolling bus forward or backward, in order to make
stops contact. There must be at least 1/8" clearance between pitman arm, drag rod and front axle tie
rod and all potential interference points.
The turning radius may be increased at any time by readjusting the axle stops and rotating steering first
clockwise then counter clockwise. The steering gear poppets will adjust automatically for the increased
turning radius.
If it becomes necessary to shorten the turning radius, the steering gear poppets must be adjusted manu-
ally by doing the following. Read the section on special poppet valve manual readjustment in the TAS65
Service Manual before proceeding.
