Specifications & Procedures Subaru Impreza WRX GD/GG рестайлинг

Scheme 1

Scheme 2

Scheme 3

Note. Front and rear toe-ins and front camber can be adjusted. If the toe-in or camber tolerance exceeds specifications, adjust toe-in and camber to the middle value of specification. The other items indicated in the specification table cannot be adjusted. If the other items exceeds specifications, check suspension parts and connections for deformities; replace with new ones as required.

Scheme 4

Scheme 5

1. Tightening torque: N.m (kgf-m, ft-lb) T1: 20 (2.0, 14.5) T2: 25 (2.5, 18.1) T3: 30 (3.1, 22) T4: 34 (3.5, 25) T5: 40 (4.1, 30) T6: 45 (4.6, 33) T7: 50 (5.1, 37) T8: 55 (5.6, 41) T9: 71 (7.2, 52) T10: 100 (10.2, 74) T11: See «INSPECTION - SUB FRAME»(/subaru/impreza-wrx/gdgg-2002-2005/remont/wheel-alignment/#specifications-procedures) . T12: 175 (17.8, 129) T13: 190 (19.4, 140) T14: 250 (25.5, 184)

Scheme 6

1. Tightening torque:N.m(Kgf-m,ft-lb) T1: 20 (2.0,14.5) T2: 25 (2.5,18.1) T3: 45 (4.6,33.2) T4: 55 (5.6,41) T5: 70 (7.1,52) T6: 90 (9.2,66) T7: 100 (10.2,74) T8: 115 (11.7,85) T9: 130 (13.3,96) T10: 135 (13.8,100) T11: 220 (22.4,162)

CAUTION

1. Wear working clothing, including a cap, protective goggles, and protective shoes during operation.
2. Remove contamination including dirt and corrosion before removal, installation or disassembly.
3. Keep the disassembled parts in order and protect them from dust or dirt.
4. Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, installation, disassembly, and replacement.
5. Use SUBARU genuine grease etc. or the equivalent. Do not mix grease etc. with that of another grade or from other manufacturers.
6. Be sure to tighten fasteners including bolts and nuts to the specified torque.
7. Place shop jacks or safety stands at the specified points.
8. Apply grease onto sliding or revolution surfaces before installation.
9. Before installing O-rings or snap rings, apply sufficient amount of grease to avoid damage and deformation.
10. Before securing a part on a vise, place cushioning material such as wood blocks, aluminum plate, or shop cloth between the part and the vise.

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

WHEEL ALIGNMENT

Note. The front and rear wheel alignment must be measured and/or adjusted at once to obtain accuracy. Measure and/or adjust the rear wheel alignment together with the front.

INSPECTION

Check, adjust and/or measure wheel alignment in accordance with procedures indicated in figure

Scheme 12

Scheme 13

Scheme 14

1. Adjust the tire pressure to specifications.
2. Set the vehicle under "curb weight" conditions. (Empty luggage compartment, install spare tire, jack, service tools, and top up fuel tank.)
3. Set the steering wheel in a wheel-forward position.
4. Suspend a thread from wheel arch (point "A" in figure below) to determine the point directly above center of spindle.
5. Measure the distance between measuring point "A" and center of spindle.

Scheme 15

1. Place the front wheel on turning radius gauge. Make sure the ground contacting surfaces of front and rear wheels are set at the same height.
2. Set the ST into the center of the wheel, and then install the wheel alignment gauge. ST 927380002 ADAPTER NOTE: See «SPECIFICATIONS»(/subaru/impreza-wrx/gdgg-2002-2005/remont/wheel-alignment/#specifications-procedures) for the camber values. Front: (Scheme 2) Rear: (Scheme 3)

Scheme 16

Scheme 17

1. Loosen the two self-locking nuts located at the lower front portion of strut. CAUTION: When the adjusting bolt needs to be loosened or tightened, hold its head with a wrench and turn the self-locking nut. Discard the loosened self-locking nut and replace with a new one.
2. Turn the camber adjusting bolt so that the camber is set at the specification. NOTE: Moving the adjusting bolt by one scale graduation changes the camber by approximately 0°10'.
3. Tighten the two self-locking nuts. Tightening torque: 175 N.m (17.8 kgf-m, 129 ft-lb)

Scheme 18

1. Inspection Place the front wheel on turning radius gauge. Make sure the ground contacting surfaces of front and rear wheels are set at the same height. Set the ST into the center of the wheel, and then install the wheel alignment gauge. ST 927380002 ADAPTER NOTE: Refer to the «SPECIFICATIONS»(/subaru/impreza-wrx/gdgg-2002-2005/remont/wheel-alignment/#specifications-procedures) for the caster values. (Scheme 2)

Scheme 19

1. Using a toe gauge, measure the front wheel toe-in. Toe-in: 0+/-3 mm (0+/-0.12 in)
2. Mark the rear sides of left and right tires at height corresponding to the center of spindles and measure distance "A" between marks.
3. Move the vehicle forward so that the marks line up with front sides at height corresponding to the center of spindles.
4. Measure the distance "B" between left and the right marks. Toe-in can then be obtained by the following equation: A - B = Toe-in

Scheme 20

1. Loosen the left and right side steering tie-rods lock nuts.
2. Turn the left and right tie rods equal amounts until the toe-in is at the specification. Both the left and right tie-rods are right-hand threaded. To increase toe-in, turn both tie-rods clockwise equal amounts (as viewed from the inside of the vehicle).
3. Tighten the tie-rod lock nut. Tightening torque: 83 N.m (8.5 kgf-m, 61.5 ft-lb) CAUTION: Correct the tie-rod boot, if it is twisted. NOTE: Check that the left and right wheel steering angle is within specifications.

1. Using a toe-in gauge, measure the rear wheel toe-in. Toe-in: 0+/-3 mm (0+/-0.12 in)
2. Mark the rear sides of left and right tires at height corresponding to the center of spindles and measure distance "A" between marks.
3. Move the vehicle forward so the that marks line up with front sides at height corresponding to the center of spindles.
4. Measure the distance "B" between left and right marks. Toe-in can then be obtained by the following equation

A - B = Toe-in

Scheme 21

Scheme 22

Scheme 23

1. Loosen the self-locking nut on inner side of link rear. CAUTION: When loosening or tightening the adjusting bolt, hold the bolt head and turn self-locking nut. Discard the loosened self-locking nut and replace with a new one.
2. Turn the adjusting bolt head until toe-in is at the specification. NOTE: When the left and right wheels are adjusted for toe-in at the same time, the movement of one scale graduation changes toe-in by approximately 1.5 mm (0.6 in).
3. Tighten the self-locking nut. Tightening torque: 100 N.m (10.2 kgf-m, 74 ft-lb)

Scheme 24

1. Place the vehicle on a turning radius gauge.
2. While depressing the brake pedal, turn the steering wheel fully to the left and right. With the steering wheel held at each fully turned position, measure both the inner and outer wheel steering angle. Steering angle

Adjustment

Turn the tie-rod to adjust the steering angle of both inner and outer wheels.

Scheme 25

Scheme 26

1. Position the vehicle on a level surface.
2. Move the vehicle 3 to 4 meters directly forward.
3. Determine the locus of both front and rear axles.
4. Measure the distance "L" between center line of loci of the axles. Thrust angle: Less than 20' when "L" is equal to or less than 15 mm (59 in).

Scheme 27

Scheme 28

Scheme 29

1. Make the thrust angle adjustments by turning toe-in adjusting bolts of rear suspension equally in the same direction.
2. When one rear wheel is adjusted in a toe-in direction, adjust the other rear wheel equally in toe-out direction, in order to make the thrust angle adjustment.
3. When the left and right adjusting bolts are turned incrementally by one graduation in the same direction, the thrust angle will change approximately 16' ["L" is almost equal to 12 mm (0.472 in)]. Thrust angle: 0°+/-20' NOTE: Thrust angle refers to a mean value of left and right rear wheel toe angles in relation to the vehicle body center line. Vehicle is driven straight in the thrust angle direction while swinging in the oblique direction depending on the degree of the mean thrust angle. Thrust angle: r = (alpha - beta)/2 alpha: Right rear wheel toe-in angle beta: Left rear wheel toe-in angle NOTE: Here, use only positive toe-in values from each wheel to substitute for alpha and beta in the equation.

Scheme 30

Scheme 31

1. Large rebound shock
2. Rocking of vehicle continues too long after running over bump and/or hump.
3. Large shock in bumping

Scheme 32

Scheme 33

Scheme 34

Scheme 35

1. Lift-up the vehicle.
2. Remove the under cover.
3. Remove the bolt cover.
4. Remove the clip.
5. Remove the sub frame. NOTE: Loosen bolt (1) and leave a few threads caught, then remove the bolts in the order of (2), (3), (4), (5), and (6).

INSTALLATION

Install in the reverse order of removal.

Note. Replace the M12 bolt with a new one.

1. Tightening torque: T1: 34 N.m (3.5 kgf-m, 25 ft-lb) T2: 55 N.m (5.6 kgf-m, 41 ft-lb) T3: 71 N.m (7.2 kgf-m, 52 ft-lb) T4: 105 N.m (10.7 kgf-m, 77 ft-lb)

Scheme 36

1. Check that there is no damage and distortion at the sub frame.
2. Check that the bolts are tightened with the specified torque. If there is looseness, tighten to the specified torque. NOTE: The tightening torque differs by the color for bolt.
3. Always verify the bolt color before checking tightening torque.

1. Tightening torque: T1: 34 N.m (3.5 kgf-m, 25 ft-lb) T2: 55 N.m (5.6 kgf-m, 41 ft-lb) T3: 71 N.m (7.2 kgf-m, 52 ft-lb) T4: DARK GREEN bolt 105 N.m (10.7 kgf-m, 77 ft-lb) T4: Except DARK GREEN bolt 55 N.m (5.6 kgf-m, 41 ft-lb)

Scheme 37

See also:
• INSPECTION - SUB FRAME