Subaru 2009 IMPREZA Service Manual page 1116

MECHANICAL
(3) If the adjuster rod is not stiff and moves
down, replace the automatic belt tension adjust-
er assembly with a new part.
CAUTION:
• Always use a vertical type pressing tool to
move the adjuster rod down.
• Do not use a lateral type vise.
• Push the adjuster rod vertically.
• Press-in the push adjuster rod gradually tak-
ing three minutes or more.
• Do not allow press pressure to exceed 9,807
N (1,000 kgf, 2,205 lb).
• Push in the adjuster rod to the end face of the
cylinder. However, do not press the adjuster
rod below the end face of the cylinder. Doing so
may damage the cylinder.
4) Measure the amount of rod protrusion "H" from
the end surface of the body. If it is not within spec-
ifications, replace the automatic belt tension adjust-
er assembly with a new part.
Amount of rod protrusion H:
5.2 — 6.2 mm (0.205 — 0.244 in)
H
3. BELT TENSION PULLEY
1) Check the mating surfaces of timing belt and
contact point of adjuster rod for abnormal wear or
scratches. Replace the automatic belt tension ad-
juster assembly with a new part if faulty.
2) Check the belt tension pulley for smooth rota-
tion. Replace the automatic belt tension adjuster
assembly with a new part if abnormal noise or ex-
cessive play occurs.
3) Check the belt tension pulley for grease leakage.
4. BELT IDLER
1) Check the belt idler for smooth rotation. Replace
if noise or excessive play occurs.
2) Check the outer contacting surfaces of idler pul-
ley for abnormal wear and scratches.
3) Check the belt idler for grease leakage.
Timing Belt
ME-00249
ME(H4DOTC)-58