Overview - Subframe

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Fig 1: Subframe Component Location Overview

Courtesy of AUDI OF AMERICA, LLC

Bolt
- For the tightening specification, refer to FOR ENGINE(S) CTUA & CGXB - OVERVIEW - SUBFRAME MOUNT , FOR ENGINE(S) CPNB OVERVIEW - SUBFRAME MOUNT or FOR ENGINE(S) CEUC & CRDB - OVERVIEW - SUBFRAME MOUNT .
Engine Mount
- Removing and installing, refer to FOR ENGINE(S) CTUA & CGXB - OVERVIEW - SUBFRAME MOUNT , FOR ENGINE(S) CPNB OVERVIEW - SUBFRAME MOUNT or FOR ENGINE(S) CEUC & CRDB - OVERVIEW - SUBFRAME MOUNT .
Engine Mount Bracket
Nut
- 9 Nm
Bolt
- 9 Nm
Heat Shield Upper Section
- Removing and installing, refer to SUBFRAME HEATSHIELD, REMOVING AND INSTALLING .
Bolt
- 9 Nm
Bolt
- 9 Nm
Bolt
- 9 Nm
Heat Shield Lower Section
- Removing and installing, refer to SUBFRAME HEATSHIELD, REMOVING AND INSTALLING .
Subframe
- Removing and installing, refer to SUBFRAME WITH STEERING GEAR, REMOVING AND INSTALLING .
  NOTE:
  Perform a pre-adjustment on the subframe if it is being replaced or if it had to be removed in order to loosen the crossbrace, refer to Installing => Subframe Pre-Adjusting Procedure: .
Bolt
- 115 Nm +90° turn
- Always replace if removed
- Remove and tighten diagonally and in steps
Bolt
- 115 Nm +90° turn
- Always replace if removed
- Remove and tighten diagonally and in steps
Bolt
- 90 Nm +180° turn
- Always replace if removed
Bolt
- 90 Nm +180° turn
- Always replace if removed
Subframe Crossbrace
- Removing and installing, refer to SUBFRAME CROSSBRACE, REMOVING AND INSTALLING .
  CAUTION:
  The suspension components could be damaged.
  
  If the subframe, the steering gear or the subframe crossbrace are not installed correctly, do not rest the vehicle on its wheels.
  
  The vehicle must not be supported on the subframe or the subframe crossbrace (for example using a floor jack).
Bolt
- 90 Nm +180° turn
- Always replace if removed
Bolt
- 20 Nm
Shield
Bolt
- To secure the steering gear, tightening specification, refer to OVERVIEW - STEERING GEAR, STEERING GEAR WITH TIE RODS
Shock Absorber Fork
Bolt
- 40 Nm +90° turn
- Always replace if removed
- Tighten in the curb weight position, refer to WHEEL BEARING IN CONTROL POSITION, LIFTING VEHICLES WITH AIR SUSPENSION or WHEEL BEARING IN CURB WEIGHT, LIFTING VEHICLES WITH COIL SPRING .
Stabilizer Bar
- Removing and installing, refer to STABILIZER BAR, REMOVING AND INSTALLING .
Nut
- 25 Nm
- Always replace if removed
- Remove and install the nuts alternating from side to side
Clamp
Rubber Bushing
- The opening on the rubber bushing must be facing up when installing the subframe.
- There must not be any grease on the stabilizer bar and rubber bushing when installing them.
Nut
- Always replace.
Bolt
- 40 Nm +90° turn
- Always replace if removed
- Tighten in the curb weight position, refer to WHEEL BEARING IN CONTROL POSITION, LIFTING VEHICLES WITH AIR SUSPENSION or WHEEL BEARING IN CURB WEIGHT, LIFTING VEHICLES WITH COIL SPRING .
Coupling Rod
- Note the installed position, refer to Fig 2.
- Removing and installing, refer to COUPLING ROD, REMOVING AND INSTALLING .
Bolt
- 20 Nm
Bolt
- 20 Nm
Front Lower Longitudinal Member
- Installed depending on the engine versions
- Removing and installing, refer to LOWER FRONT LONGITUDINAL MEMBER, REMOVING AND INSTALLING .
Bolt
- For attaching the engine mount
- For the tightening specification, refer to FOR ENGINE(S) CTUA & CGXB - OVERVIEW - SUBFRAME MOUNT , FOR ENGINE(S) CPNB OVERVIEW - SUBFRAME MOUNT or FOR ENGINE(S) CEUC & CRDB - OVERVIEW - SUBFRAME MOUNT .
Bolt
- 20 Nm
Bolt
- For attaching the engine mount
- For the tightening specification, refer to FOR ENGINE(S) CTUA & CGXB - OVERVIEW - SUBFRAME MOUNT , FOR ENGINE(S) CPNB OVERVIEW - SUBFRAME MOUNT or FOR ENGINE(S) CEUC & CRDB - OVERVIEW - SUBFRAME MOUNT .
Bolt
- For the tightening specification, refer to FOR ENGINE(S) CTUA & CGXB - OVERVIEW - SUBFRAME MOUNT , FOR ENGINE(S) CPNB OVERVIEW - SUBFRAME MOUNT or FOR ENGINE(S) CEUC & CRDB - OVERVIEW - SUBFRAME MOUNT .

Fig 2: Connecting Coupling Rod To Stabilizer Bar

Courtesy of AUDI OF AMERICA, LLC

The left and right coupling rods are identical.

The bolt -1- for connecting the coupling rod to the stabilizer bar -4- must be attached to the "small" surface -2- of the coupling rod collar and secured with the nut -3-.