Isuzu 2000 Trooper Workshop Manual page 194

2A–26 POWER ASSISTED SYSTEM
6. Install sector shaft.
D Tape the sector shaft serrations to protect the seal
ring from damage.
D Align the center tooth of ball nut with that of the
sector shaft.
7. Install O-ring.
8. Install top cover assembly and tighten the fixing bolts
to specified torque.
Torque: 47 N·m (35 lb ft)
9. Adjust the backlash between the worm gear and the
ball nut.
D With the worm gear rotating, set it to the straight
ahead position.
D Set the worm shaft preload to below 10kg·cm with
the sector shaft adjusting screw.
D Measure the worm shaft preload with the worm
gear turned 450° both to the right and to the left.
The worm gear preload in these positions should be
0.4–0.6 N·m (4–6 kg·cm) lower than in the straight
ahead position.
D Lock the sector shaft adjusting screw with the lock
nut.
Lock nut torque: 41 N·m (30 lb ft)
10. Apply a thin coat of power steering fluid to oil seal lip of
each part, then use installer J–26508 to install oil seal.
440RS004
11. Install back up ring and position the chamfered face
(outer circumference) towards the oil seal.
12. Install retaining ring and position the chamfered face
(outer circumference) towards the oil seal.
13. Install dust cover.
440RS011
440RS012