A/C Drive Belt

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION .)
Loosen idle pulley locknut A.
Loosen adjusting bolt B and remove the belt.

Install the drive belt and adjust the drive belt deflection by tightening adjusting bolt B to the specification.

CAUTION:

After replacing with a the new drive belt, assemble with the deflection/tension for new drive belt and operate the drive belt for 5 min or more while idling the engine. Then adjust it to the deflection/tension used when adjusting.

Fig 1: Removing Idle Pulley Locknut

Courtesy of MAZDA MOTORS CORP.

DRIVE BELT DEFLECTION (WITH PRESSURE OF 98 N {10 KGF, 22 LBF})

New (mm {in})	When adjusting (mm {in})
3.0-3.8 {0.11-0.14}	3.3-4.0 {0.13-0.15}

DRIVE BELT TENSION (WHEN USING THE SST)

New (N {kgf, lbf})	When adjusting (N {kgf, lbf})
559-706 {57.1-71.9, 126-158}	519-617 {53.0-62.9, 117-138}

Tighten idle pulley locknut A to the specified torque.
Tightening torque
1. 37.2-51.9 N.m
  1. {3.80-5.29 kgf.m, 27.5-38.2 ft.lbf}
Crank the engine and measure the deflection and tension again. If not within the specification, repeat from Step 2 again.
Install the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION .)