Subaru 2009 IMPREZA Service Manual page 1110

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B: INSTALLATION

1. AUTOMATIC BELT TENSION ADJUSTER

ASSEMBLY AND BELT IDLER

1) Prepare for installation of the automatic belt ten-

sion adjuster assembly.

• 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.

• Do not release the press pressure until stop-

per pin is completely inserted.

(1) Attach the automatic belt tension adjuster

assembly to vertical pressing tool.

(2) Slowly push in the adjuster rod with a pres-

sure of 165 N (16.8 kgf, 37.1 lb) or more until

the adjuster rod is aligned with the stopper pin

hole in the cylinder.

(3) With a 2 mm (0.08 in) dia. stopper pin or a 2

mm (nominal) dia. hex wrench inserted into the

stopper pin hole in cylinder, secure the adjuster

2) Install the automatic belt tension adjuster assembly.

Tightening torque:

39 N·m (4.0 kgf-m, 28.8 ft-lb)

3) Install the belt idler No. 2.

Tightening torque:

39 N·m (4.0 kgf-m, 28.8 ft-lb)

4) Install the belt idlers.

Tightening torque:

39 N·m (4.0 kgf-m, 28.8 ft-lb)

Tightening torque:

25 N·m (2.5 kgf-m, 18.4 ft-lb)

ME(H4DOTC)-52