Installing Front Sub-Frame

Transferring components 

Transfer 

• the control arms. Use new screws and new nut. Tighten the front screws. Tighten to 65 Nm  . Angle-tighten 90°  . Use bevel protractor 9512050 . Tighten the rear screw. Tighten to 105 Nm  . Angle-tighten 90° 
• the anti-roll bar. Tighten to 60 Nm 
• the right-hand engine mounting. Tighten the screws. Tighten to 65 Nm  . Angle-tighten 60° 
• the mounting for the heated oxygen sensor (HO2S) wiring
• the engine pad.

Install new pipe / hose holders.

Installing the sub-frame 

• Position the sub-frame on a lifting table
• Carefully lift the sub-frame
• Locate the control arms on the ball joints and the steering gear on its mountings
• Remove the hook (999 5045) that is holding the steering gear
• Lift the sub-frame up completely
• Reinstall the engine block heater (if applicable).

• Install the engine block heater (if applicable) on the left front mounting for the sub-frame
• Install the four screws in the sub-frame together with the sub-frame brackets. Use new screws  . Lubricate the screws
• First tighten the screws on the left side of the sub-frame. Tighten to 105 Nm  . Angle tighten to 120°  . Then tighten the right-hand side to the same value
• Finally tighten the screws for the brackets on both sides to 50 Nm  .

Finishing 

Install 

• the right-hand engine mounting. Use new  screws. Tighten to 35 Nm  . Angle-tighten 90°  .

• the front engine pad. Tighten to 50 Nm  .

• lower torque rod. Tighten the screw and nut. Tighten to 35 Nm  . Angle-tighten 90°  .

  The lower torque rod must be tightened last to avoid tension being introduced.

  Tighten the front nuts. Tighten to 65 Nm  . Angle-tighten 90°  . Use bevel protractor 9512050 .

• the fender liner and the splash guard with both the plastic nuts.

• the four nuts and the screw holding the steering gear. Use new nuts and a new screw. Tighten to 50 Nm 

  Clip the cable in position.

  the nut (A), holding the lower half of the collision protection system. (Applies only to right-hand drive cars). Tighten to 50 Nm  .

• the wiring for the heated oxygen sensor (HO2S) in its mounting. (Does not apply to diesels).

• the mountings for the exhaust pipe on the bracket. Tighten to 10 Nm 
• the brake pipe on the bracket for the exhaust pipe
• the bracket for the exhaust pipe. Tighten the bracket screws. Tighten to 25 Nm  .

• EVAP canister hose. Press the joint together.

• oil pipes to steering gear
• any fuel line for engine block heater
• any engine block heater.

• new nuts  on the ball joints. Tighten. See: Tightening torque . Counterhold using a Torx wrench to prevent damaging the ball joint boot.

• the anti-roll bar links. Use new  nuts. Tighten to 50 Nm  . Counterhold with a Torx wrench so that the boot is not damaged.

• the cable duct screw.

• the air duct cover.

• the splash guard under the engine. Tighten to 20 Nm 
• Lower the car.

• Install the wheels. See Installing wheels
• Remove the lifting tools for the engine
• Install the engine cover (diesel engines only).