Subaru WRX & WRX STI Manuals 2011 Impreza WRX & WRX STI Owner's Manual | Page 373

Maintenance and service

Drive belts

1)
2)
3)
4)
5)
6)
A)

Check the deflection of the front
side belt and if there is any looseness, cracks, wear or unusual noise
on the front side belt, contact your
SUBARU dealer.
Continuing to use the vehicle with
the belt outside of the specification
may cause the engine to malfunction and the above components to
malfunction.

Power steering oil pump pulley
Front side belt
Alternator pulley
Air conditioner compressor pulley
Rear side belt
Crank pulley
22 lbf (98 N, 10 kgf)

To check the deflection of the fro nt side
belt, place a straightedge (ruler) across
two adjacent pulleys (alternator pulley and
crank pulley) and apply a force of 22 lbf
(98 N, 10 kgf) midway between the pulleys
by using a spring scale. The belt deflection should be the amount specified. If the
front side belt is loose, cracked or worn,
contact your SUBARU dealer.

Manual transmission oil
& Checking the oil level

Non-turbo models
1) Yellow handle

in (mm)
Deflection
New belt

CAUTION
The front side belt, which runs in
conjunction with the following components, must be used within the
specified deflection.
. Power steering oil pump pulley
. Alternator pulley
. Crank pulley

11-21

A

Used belt

0.28 – 0.35
(7.0 – 9.0)

0.35 – 0.43
(9.0 – 11.0)

The rear side belt is a stretch-type belt,
therefore the deflection does not need to
be checked. If there are cracks or wear
confirmed on the belts and a squeaking
noise is heard from them, contact your
SUBARU dealer.

Turbo models except STI
– CONTINUED –