Impreza WRX STI F4-2.5L Turbo (2008)
10) Loosen the coil spring compressor carefully.
INSPECTION
Check the removed part for wear, damage and cracks, and then repair or replace it if defective.
DAMPER STRUT
1) Check for oil leaks.
2) Move the piston rod up and down to check that it operates smoothly without any hitch.
3) Piston rod play
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Measure the play as follows:
Fix the outer shell in place and fully extend the rod. Set a dial gauge at the end of rod L [10 mm (0.39 in)], and then read the dial gauge indication P1
while applying a force of W [20 N (2 kgs, 4 lbf)] to the threaded portion. Apply a force of 20 N (2 kgs, 4 lbf) from the opposite direction of "W", and
then read the dial gauge indication P2.
Play limit (P1 + P2): 0.8 mm (0.031 in)
If the play exceeds limit, replace the strut.
STRUT MOUNT
Check the rubber part for deformation, cracks or deterioration, and then replace it with a new part if defective.
DUST COVER
If major cracks or damage are found, replace it with a new part.
COIL SPRING
If a permanent strain is found, replaced it with a new part.
Rear Suspension
DISASSEMBLY
Refer to "Front Strut" for disassembly procedure.
ASSEMBLY
Refer to "Front Strut" for installation procedures.
INSPECTION
Refer to "Front Strut" for inspection procedures.