Subaru 2005 Legacy - Manual (Page 529)

11-30
Maintenance and service
Drive belts
The alternator, power steering pump, and air condi-
tioner compressor depend on drive belts. Satisfactory
performance requires that belt tension be correct.
! 2.5-liter models
A) Power steering pump pulley
B) Air conditioner compressor pulley
C) Crank pulley
in (mm)
To check belt tension, place a straightedge (ruler)
across two adjacent pulleys and apply a force of 22 lbs
(98 N, 10 kg) midway between the pulleys by using a
spring scale. Belt deflection should be the amount
specified.
! 3.0-liter models
It is unnecessary to check belt tension periodically be-
cause your engine is equipped with an automatic belt
tension adjuster. However, replacement of the belt
should be done according to the maintenance sched-
ule in the “Warranty and Maintenance Booklet”. Con-
sult your SUBARU dealer for replacement.
If a belt is loose, cracked, or worn, contact your SUB-
ARU dealer.
B
C
a
b
A
HSB033BC
Deflection
New belt Used belt
a 0.28 – 0.35 (7.0 – 9.0) 0.35 – 0.43 (9.0 – 11.0)
b 0.30 – 0.33 (7.5 – 8.5) 0.35 – 0.40 (9.0 – 10.0)