Damper Strut

WARNING: This page is about a different car, the 2006 Subaru Outback and 2006 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Check for oil leaks.
Move the piston rod up and down to check that it operates smoothly without any hitch.
Piston rod play

Measure the play as follows:
Fix the outer shell 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 kgf, 4 lb)] to threaded portion. Apply a force of 20 N (2 kgf, 4 lb) in the opposite direction of "W", and then read the dial gauge indication P₂ .

Fig 1: Identifying Play Measurement

Courtesy of SUBARU OF AMERICA, INC.

Play limit (P ₁ + P ₂ ):

0.8 mm (0.031 in)

If the play exceeds limit, replace the strut.