Subframe, removing and installing

WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Special Tools - Subframe, Removing And Installing

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Special tools, testers and auxiliary items required

Engine support bridge 10 - 222 A
Support 10 - 222 A/1
Testing mandrel 3393
Torque wrench V.A.G 1331

Torque wrench V.A.G 1332
Engine/transmission jack V.A.G 1383 A

Removing

Support engine entirely with engine support bridge.
Remove wheel covers, remove cover cap on light-alloy wheels (removal hook in vehicle tool kit).
Remove wheels.
Secure brake disc with a wheel bolt.

Remove sound insulation. →
- 50 BODY, FRONT
- 50 - BODY - FRONT for BODY EXTERIOR - CABRIOLET

Convertible only

Remove front diagonal brace → Diagonal braces .

Continued for all vehicles

Fig 2: Checking Holes Align Using Testing Mandrel 3393

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Before removing subframe, check whether holes - 1 - and - 2 - are aligned using special tool 3393.

If this is not the case, a vehicle alignment must be performed after carrier is installed.

Fig 3: Removing/Installing Bolts For Left/Right Transmission Mount

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Remove nuts - arrows - at transmission mounts if necessary.

Fig 4: Identifying Nut & Bolts

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Remove nuts - 1 -
On vehicles with headlight range control, remove vehicle level sensor link from link → Vehicles with automatic headlight vertical aim control, vehicle level sensor .

Fig 5: Identifying Guide Link/Subframe Connection Bolts

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Remove ABS speed sensor screw - 5 -.
Remove ABS speed sensor wiring from wheel bearing housing bracket.

Vehicles with brake caliper HP-2

Fig 6: Removing Hex Bolt, Brake Line Bracket, Bolts From Brake Caliper And Brake Caliper

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Remove hex bolt - 2 - and remove brake line bracket.
Remove bolts - 1 - from brake caliper and remove brake caliper.
Reinstall brake line bracket. Reinstall hex bolt - 2 - and tighten.
Secure brake caliper to body so that caliper weight does not bend or damage brake line.

Continued for all vehicles

Remove brake caliper and secure to body so that weight of caliper does not stress or damage brake hose or brake line.

To avoid damaging upper link joints, wheel bearing housing must be braced against a rebound that is too strong, e.g. using engine/transmission jack V.A.G 1383 A

Fig 7: Identifying Guide Link/Subframe Connection Bolts

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Remove bolt - 1 -
Remove bolt - 4 -
Remove bolt - 3 -
Loosen guide link/subframe connection.

Remove tunnel crossmember if necessary → Tunnel crossmember, removing and installing .
Place engine/transmission jack V.A.G 1383 A with wooden block under subframe and press lightly against.

Fig 8: Removing/Installing Lower Rear Subframe Hex Bolts

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Remove hex bolts - 1 -.
Remove hex bolts - 2 - and lower rear subframe.
Remove guide link hex bolts.
Remove guide links from subframe.

NOTE:

To prevent link and guide link pins from being over flexed, they should be secured with a wire or something similar during removal.

Fig 9: Removing/Installing Power Steering Line From Console

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Remove power steering line - arrow - from console.

Fig 10: Identifying Nut & Bolts

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Remove bolt - 3 -.
Loosen hex bolts - 2 - until subframe can be removed.

Installing

Fig 11: Inserting Subframe And Installing Hex Bolts

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Insert subframe and install hex bolts - 5 - and - 6 -.
Insert suspension strut hex bolts at link.
Guide control arms and guide links into subframe.

Before tightening subframe, it must be fixed to body using Testing Mandrel 3393.

Fig 12: Identifying Hole, Sub-Frame Hole And Aluminum Console Hole Align On Both Sides

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Holes - 1 - and - 2 - of subframe and hole - 3 - of aluminum bracket must line up on both sides.

NOTE:

This attachment only replaces subsequent vehicle alignment measurements when:
The subframe is removed completely and installed.
Holes - 1 - and - 2 - lined up before the repair.

Fig 13: Removing/Installing Lower Rear Subframe Hex Bolts

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Position hex bolts - 1 - and - 2 -.
Protect holes in body for mounting Testing Mandrel 3393 against corrosion.

Fig 14: Identifying Nut & Bolts

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Install nut - 1 -.

Fig 15: Removing/Installing Bolts For Left/Right Transmission Mount

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Install transmission mount nuts - arrows - if necessary.

Fig 16: Removing/Installing Power Steering Line From Console

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Clip cable - arrow - into console.

Tightening sequence

NOTE:

Threads in body can be repaired according to DIN 8140 using wire thread inserts (Heli-Coil). Thread insert must be same length as thread in body.
Bonded rubber bushings have a limited torsional range. Only tighten threaded connections at control arms if vehicle is in curb weight position → Wheel bearing, lifting to curb weight position

Fig 17: Removing/Installing Lower Rear Subframe Hex Bolts

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Tighten hex bolts - 2 - and - 5 -
Tighten hex bolts - 1 -.

Fig 18: Removing/Installing Bolts For Left/Right Transmission Mount

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Tighten transmission mount nuts - arrows - →
- 34 MANUAL TRANSMISSION - CONTROLS, HOUSING for 5 SPD. MANUAL TRANSMISSION 012/01W FRONT WHEEL DRIVE
- 34 MANUAL TRANSMISSION - CONTROLS, HOUSING for 6 SPD. MANUAL TRANSMISSION 01E ALL WHEEL DRIVE
- 34 CONTROLS, HOUSING for 6-SPEED MANUAL TRANSMISSION 01X, FRONT-WHEEL DRIVE
- 34 CONTROLS, HOUSING for 6-SPEED MANUAL TRANSMISSION 02X, FOUR-WHEEL DRIVE
- 34 CONTROLS, HOUSING for 6-SPEED MANUAL TRANSMISSION 0A3, ALL WHEEL DRIVE
or →
- 37 - AUTOMATIC TRANSMISSION - CONTROLS, HOUSING for 5 SPD. AUTOMATIC TRANSMISSION 01V
- 37 CONTROLS, HOUSING for 6 SPD. AUTOMATIC TRANSMISSION 09L ALL WHEEL DRIVE

Fig 19: Identifying Nut & Bolts

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Tighten bolt - 2 - ,
Tighten engine mount nuts - 1 -. →
- 10 - ENGINE - ASSEMBLY for 1.8 LITER 4-CYL. 5V TURBO ENGINE MECHANICAL, ENGINE CODE(S): AMB
- 10 - ENGINE - ASSEMBLY for 2.0 LITER 4-CYL. 4V TURBO ENGINE MECHANICAL, ENGINE CODE(S): BPG, BWT
- 10 ENGINE - ASSEMBLY for 3.0 LITER 6-CYL. 5V ENGINE MECHANICAL, ENGINE CODE(S): AVK, BGN
- 10 - ENGINE - ASSEMBLY for 3.2 V6 4V ENGINE MECHANICAL, ENGINE CODE(S): BKH
- 10 - ENGINE - ASSEMBLY for 4.2 LITER V8 4V ENGINE MECHANICAL, ENGINE CODE(S): BNS
- 10 - ENGINE - ASSEMBLY for 4.2 LITER V8 5V ENGINE MECHANICAL, ENGINE CODE(S): BHF

Fig 20: Identifying Guide Link/Subframe Connection Bolts

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Tighten control arm hex head screws - 3 -
Tighten guide link hex bolts ,
Tighten connecting link to stabilizer bar - 4 - ,
Suspension strut to link ,

Install tunnel crossmember if necessary → Tunnel crossmember, removing and installing .

Fig 21: Identifying Guide Link/Subframe Connection Bolts

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Tighten ABS speed sensor screw - 5 -. → 45 - ANTI-LOCK BRAKE SYSTEM
Tighten brake caliper to wheel bearing housing → 46 - BRAKES - MECHANICAL COMPONENTS
Mount wheel and tighten. This information is contained in AESIS; Library; Additional Information; Wheels and Tire Guide

Convertible only

Install front diagonal brace → Diagonal braces .

Continued for all vehicles

NOTE:

If the subframe has been located to the body with Testing Mandrel 3393 before subframe removal and installation (before tightening bolts), vehicle alignment does not have to be done.
If the subframe was not located, vehicle alignment must be done.

Perform vehicle alignment → Wheel alignment .

Alignment must take place on a VW/Audi recommended alignment stand.