Basic Inspection - Subaru 2009 IMPREZA Service Manual

E: INSPECTION

1. BASIC INSPECTION

1) Clean all the disassembled parts, and check for wear, damage or any other faults, then repair or replace
as necessary.
2) When disassembling, check the inside of gearbox for water. If any water is found, carefully check the boot
for damage, input shaft dust seal, adjusting screw and boot clips for poor sealing. If faulty, replace with new
parts.
No. Parts
1 Input shaft
2 Dust seal
3 Rack & pinion
4 Gearbox unit
5 Boot
6 Tie-rod
7 Tie-rod end
8 Adjusting screw spring Deterioration
9 Boot clip
10 Sleeve
11 Pipe
Steering Gearbox
Inspection
(1) Bent input shaft
(2) Damage on serration
(1) Crack or damage
(2) Wear
Poor mating of rack with pinion
(1) Bending of the rack shaft
(2) Bending of the cylinder portion
(3) Crack or damage on the cast iron
portion
(4) Wear or damage on rack bushing
(5) Wear on input shaft bearing
Crack, damage or deterioration
(1) Looseness of ball joint
(2) Bend of tie-rod
Damage or deterioration of dust seal
Deterioration
Damage
(1) Damage to flared surface
(2) Damage to flare nut
(3) Damage to pipe
PS-33
POWER ASSISTED SYSTEM (POWER STEERING)
Corrective action
If the bend or damage is excessive, replace the entire
gearbox.
If the outer wall slips, the lip is worn out or damage is
found, replace it with a new part.
(1) Adjust the backlash properly.
By measuring the turning torque of the gearbox and
sliding resistance of rack, check if the rack & pinion
engage uniformly and smoothly with each other. (Refer
to "Service limit".)
(2) Pull out the entire rack to allow viewing of the teeth,
and check for damage.
Even if abnormality is found in either (1) or (2), replace
the entire gearbox.
Replace the gearbox with a new part.
If the free play of rack shaft in radial direction is out of
the specified range, replace the gearbox with new part.
(Refer to "Service limit".)
If the free play of input shaft in radial and axial direction
is out of the specified range, replace the gearbox with a
new part. (Refer to "Service limit".)
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.