Basic Inspection - Subaru 2004 IMPREZA Service Manual

POWER ASSISTED SYSTEM (POWER STEERING)
E: INSPECTION

1. BASIC INSPECTION

1) Clean all 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 and pinion
4 Gearbox unit
5 Boot
6 Tie-rod
7 Tie-rod end
Adjusting screw
8
spring
9 Boot clip
10 Sleeve
11 Pipes
Steering Gearbox [RHD MODEL]
Inspection
(1) Bend of input shaft
(2) Damage on serration
(1) Crack or damage
(2) Wear
Poor mating of rack with pinion
(1) Bend of rack shaft
(2) Bend of cylinder portion
(3) Crack or damage on cast iron
portion
(4) Wear or damage on rack bush
(5) Wear on input shaft bearing
Crack, damage or deterioration
(1) Looseness of ball joint
(2) Bend of tie-rod
Damage or deterioration on dust
seal
Deterioration
Deterioration
Damage
(1) Damage to flared surface
(2) Damage to flare nut
(3) Damage to pipe
PS-60
Corrective action
If the bend or damage is excessive, replace the entire
gearbox.
If the outer wall slips, lip is worn out or damage is found,
replace it with a new one.
(1) Adjust the backlash properly.
By measuring the turning torque of gearbox and sliding
resistance of rack, check if rack and pinion engage uni-
formly and smoothly with each other. (Refer to "Service
limit".)
(2) Keeping the rack pulled out all the way so that all teeth
emerge, check teeth for damage.
Even if abnormality is found in either (1) or (2), replace
the entire gearbox.
Replace the gearbox with a new one.
If the free play of rack shaft in radial direction is out of the
specified range, replace the gearbox with a new one.
(Refer to "Service limit".)
If the free plays of input shaft in radial and axial directions
are out of the specified ranges, replace the gearbox with
a new one. (Refer to "Service limit".)
Replace with a new one.
Replace with a new one.
Replace with a new one.
Replace with a new one.
Replace with a new one.
Replace with a new one.
Replace with a new one.