2015-2020 Subaru WRX & WRX STI OEM Service & Repair Manual

ME(STI)-41 V-belt MECHANICAL 12.V-belt A: REMOVAL NOTE: When replacing a single part, perform the work with the engine assembly installed to body. 1. FRONT SIDE BELT 1) Remove the V-belt covers. 2) Remove the air intake duct. <Ref. to IN(STI)-11, REMOVAL, Air Intake Duct.> 3) Loosen the bolt (A). 4) Loosen the slider bolt (B). 5) Remove the front side belt (C). 2. REAR SIDE BELT 1) Remove the front side belts. <Ref. to ME(STI)- 41, FRONT SIDE BELT, REMOVAL, V-belt.> 2) Cut the rear side belt with a wire cutter, etc., and discard. B: INSTALLATION 1. FRONT SIDE BELT CAUTION: • When reusing the front side belt, wipe off dust and water with cloth. • Do not use the front side belt if there is any oil, grease or coolant on the belt. • Be careful not to rub the belt end surface with bare hands; exposed core may cause injury. 1) Wipe off any dust, oil and water on the groove of each pulley with cloth. 2) Install the front side belt (C), and adjust the slider bolt (B) so as to obtain the specified belt tension. <Ref. to ME(STI)-47, INSPECTION, V-belt.> 3) Tighten the bolt (A). 4) Tighten the slider bolt (B). Tightening torque: Bolt (A) 25 N·m (2.5 kgf-m, 18.4 ft-lb) Slider bolt (B) 8 N·m (0.8 kgf-m, 5.9 ft-lb) 5) Install the air intake duct. <Ref. to IN(STI)-11, IN- STALLATION, Air Intake Duct.> 6) Install the V-belt cover. Tightening torque: 13 N·m (1.3 kgf-m, 9.6 ft-lb) FU-03487 ME-04947 (A) (A) (A) (C) (B) (A) ME-03343 ME-04947 (A) (A) (A) (C) (B) (A) FU-03487

ME(STI)-42 V-belt MECHANICAL 2. REAR SIDE BELT CAUTION: • Do not re-use the rear side belt. • Be careful not to let oil, grease or coolant contact a new rear side belt. • Be careful not to rub the belt end surface with bare hands; exposed core may cause injury. • To install the rear side belt, always use the provided tools (belt stopper, belt guide, belt guide holder, and bolt). 1) Wipe off any dust, oil and water on the groove of each pulley with cloth. 2) Wipe off any oil, water, dirt, and rust on the front of the crank pulley with cloth. 3) Slowly turn the crank pulley clockwise so that the service hole of the crank pulley comes around the top. CAUTION: Do not turn the crank pulley counterclockwise. 4) Hook a new rear side belt on the A/C compressor pulley. 5) As shown in the figure, insert the claw of the belt stopper (A) to the lower hole (B) of the compressor bracket, then attach with bolt (C). (A) Rear side belt (C) Belt guide (E) Bolt (B) Belt stopper (D) Belt guide holder ME-04287 (A) (B) (C) (D) (E) ME-03500 ME-03501 ME-04670 (A) (C) (B)

ME(STI)-43 V-belt MECHANICAL 6) Place the belt guide while aligning it with the belt line of the crank pulley on the front side belt side. 7) Insert the belt guide holder into the service hole of the crank pulley so that the belt guide comes in between. NOTE: Place the belt guide holder with the longer side up. 8) Slowly turn the crank pulley clockwise until the belt guide comes to approximately 45°. 9) Place the rib surface of the rear side belt into the crank pulley groove, so that the rear side belt comes in between the belt guide holder. CAUTION: When it is difficult to place the rear side belt to the crank pulley groove, pull out the belt guide holder half way, then place the rear side belt into the groove so that it comes in between the belt guide holder. 10) Place the tool through the loop of the rear side belt, and set on the crank pulley bolt. ME-04289 ME-03504 ME-03505 45 ME-04671 ME-04672

ME(STI)-44 V-belt MECHANICAL 11) While checking the following, slowly turn the crank pulley approximately 90° clockwise so that the belt guide comes to the position shown in the figure. CAUTION: When turning the crank pulley, always make sure that the belt guide is not off from the crank pulley groove. (1) The rib of the rear side belt is securely placed on the groove of the A/C compressor pulley. (2) The rib of the rear side belt is securely placed on the groove of the crank pulley. (3) The surface of the rear side belt is held by the belt stopper. (4) The rear side belt is securely placed on the belt guide. ME-04656 (4) (2) (3) (1) 90 ME-04678 ME-04679 ME-04673 ME-04139

ME(STI)-45 V-belt MECHANICAL 12) While checking the following, slowly turn the crank pulley approximately 90° clockwise so that the belt guide comes to the position shown in the figure. (1) The rear side belt is not twisted. (2) The rib of the rear side belt is securely placed on the groove of the A/C compressor pulley. (3) The rib of the rear side belt is securely placed on the groove of the crank pulley. (4) The surface of the rear side belt is held by the belt stopper. (5) The rear side belt is securely placed on the belt guide. ME-04657 (2) (4) (1) (5) (3) 90 ME-04674 ME-04678 ME-04679 ME-04673 ME-03530

2015-2020 Subaru WRX & WRX STI OEM Service & Repair Manual

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2015-2020 Subaru WRX & WRX STI OEM Service & Repair Manual

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Dedicated Engine Overhaul (FA20DIT & EJ257)

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