GMC 1990 Light Truck Repair Manual page 121

Figure 17— Remarking the Housing
Figure 18—Aligning the Adjuster Hole with the
Second Mark
N. Block Tooth
O. Over-Center
Preload Adjuster
Figure 19— Pitman Shaft "Over-Center" Sector
Adjustment
• Measure back (to the left) 13 mm (1/2-inch)
and re-mark the housing (figure 17).
• Rotate the adjuster to the left until the hole in
the adjuster is in line with the second mark
(figure 18).
I
A. Torque Wrench
B. 12 Point Socket
227. Nut
222. Adjusting Screw
251. Stub Shaft
Figure 21— Aligning the Over-Center Preload
O
F1872
POWER STEERING 3B3-7
Seals
A
2 5
B —
• Install the adjuster nut (245) and torque the nut
to 108 N m (80 ft. lbs.). Hold the adjuster plug
to maintain alignm ent of the hole with the
mark.
• Check the turning torque of the stub shaft,
using J 7754-01 and a 12-point socket. The
reading should be taken with the beam of the
I
_
V
007
2 2 2
1 1 X
r
J L t
'
1
F4929