56
1. Set axle stops for correct turn.
2. Turn new adjusting poppet screw #1469261 into jam nut until flush with end of screw.
3. With bus unloaded and engine off and axle straight ahead, remove and discard fixed poppet screw at
bottom of steering gear. (NOTE: Timing marks on end of sector shaft and housing are to be aligned)
4. Install new adjusting poppet screw #1469261 and torque jam nut to 33-37 ft. lbs.
5. Refill power steering reservoir.
6. With engine at idle, turn steering wheel clockwise until axle stop is contacted and torque steering
wheel to rim pull of 48 ft. lbs.
7. Loosen jam nut on adjusting screw and back out screw 1" to 1 1/16" beyond the jam nut and retorque
the jam nut to 33-37 ft. lbs.
8. With engine at idle, turn steering wheel in opposite direction (counterclockwise) until axle bottoms on
axle stop and torque steering wheel to a rim pull of 30 ft. lbs.
9. Turn steering wheel clockwise to the axle stop contact position. With steering wheel being held in this
position, loosen the jam nut on the adjusting screw
one turn. Hold the nut from turning and turn ad-
justing screw in to a torque of 10-20 in. lbs. increase,
and back out adjusting screw (4) turns, not to ex-
ceed 1 1/16" beyond the jam nut and release the
steering wheel. Retorque the jam nut to 33-37 ft.
lbs.
CAUTION: Do not exceed the 20 in. lbs. torque in
procedure #9. If torque is exceeded the complete
procedure must be repeated.
CAUTION: Relief valve pressure must not be main-
tained more than (5) seconds during operation
in step #9 or pump damage could occur.
10. The manual poppet adjustment is now complete.
WHEELBEARING ADJUSTMENT
SPICER FRONT AXLE
1. Lock parking brake to ensure vehicle will not roll.
2. Raise wheel to be adjusted off the ground. Place a jack stand or suitable block under axle. Make
certain wheel rotates freely.
3. Drain oil on models so equipped.
4. Remove hub cap.
5. Remove outer nut and lock (I-90 through I-132), or cotter pin and lock (I-50 through I-80). Replace
lock if tabs are broken or cracked.
6. When repacking or replacing wheel bearings, bearings must be reseated to ensure maximum service
reliability. To do this, after the hub and bearing are assembled in place
on the spindle, install the adjusting nut. Tighten the wheel bearing ad-
justing nut to 120-140 ft. lbs. (163-190 N-m), while rotating the hub to
seat the bearings. Back off the adjusting nut 1/2 turn. Retorque adjust-
ing nut to 50 ft. lbs. (68N-m) while rotating wheel in one direction. Back
off inner wheel nut 1/4 turn. This establishes .003 to .009 inch (.076 to
.228mm) end play in wheel bearings.
PEAK
FLAT
MAXIMUM
TURNING ANGLE
JAM NUT
STOP SCREW
KNUCKLE POSITIONS
FOR STOP SCREW
ADJUSTMENTS
