Contents: Examination ⇊ Replacement ⇊
Examination
1. The suspension of the power unit on V6 models is carried out by means of four supports, the front and rear of which are equipped with hydraulic correctors, which make it possible to significantly reduce the level of vibration at idle engine speed (see Section Powertrain Suspension Adjustment System - General Information and Functional Check).
2. To check, it is necessary to slightly lift the engine, relieving the supports.
3. Jack up the car and place it on supports. Place the jack under the engine oil pan (to distribute the load, place a wooden block between the jack head and the pan). Raise the jack, slightly lifting the unit and relieving the supports.
Warning! Never perform any work under a vehicle that is supported in a raised position by a jack alone!
4. Check the support pads for cracks, signs of rubber hardening and delamination from the metal base.
5. Assess the amount of play between the support plates and the power unit/vehicle frame (use a crowbar or large screwdriver as a lever). If play is detected, lower the unit and tighten the support fasteners.
6. To avoid damage to the rubber, the cushions must be treated with a special protective compound.
Replacement
Disconnect the negative cable from the battery.
Note: If your car stereo has a security code, make sure you have the correct combination to activate the system before disconnecting the battery! Apply the parking brake, jack up the front of the car and support it. Support the engine.
Right support (passenger side)
1. Support the transmission with a jack, completely unloading the right support of the powertrain suspension.
. Unscrew the through bolt, loosen the bolt securing the electric cable to the engine bracket, then loosen the two bolts securing the support bracket to the engine. Unscrew the three bolts securing the support to the vehicle chassis and remove the rubber cushion.
3. Installation is carried out in reverse order.
Note: Final tightening of the support fasteners to the required force should be performed only after the power unit has been lowered to the normal position. Proceed to the procedures listed in the section Final stage of tightening the fasteners of all supports.
Left support (driver side)
1. The left support of the power unit suspension is located under the transmission housing and is secured to the subframe.
2. Support the engine, loosen the two nuts located under the subframe and the two bolts securing the assembly to the transmission housing. Remove the cushion.
3. Installation is carried out in reverse order.
Note: Final tightening of the support fasteners to the required force should be performed only after the power unit has been lowered to the normal position. Proceed to the procedures listed in the section Final stage of tightening the fasteners of all supports.
Front support
1. The front support of the power unit suspension is located between the engine block and the radiator and is equipped with a hydraulic adjustment device (see Section Powertrain Suspension Adjustment System - General Information and Functional Check).
2. Loosen the large nut that is screwed onto the end of the mounting stud protruding from the engine bracket.
3. Remove the four bolts securing the support to the chassis, then disconnect the vacuum hose from the bottom of the assembly.
4. Raise the engine enough to release the stud from the upper bracket. Remove the assembly.
5. Installation is carried out in reverse order.
Note: Final tightening of the support fasteners to the required force should be performed only after the power unit has been lowered to the normal position. Proceed to the procedures listed in the section Final stage of tightening the fasteners of all supports.
Rear support
1. The rear support is located between the engine and the rear bulkhead of the engine compartment and, along with the front one, is equipped with a hydraulic adjustment device (see Section Powertrain Suspension Adjustment System - General Information and Functional Check).
2. Loosen the large nut screwed onto the stud protruding from the engine bracket.
3. Remove the four bolts securing the support to the chassis and disconnect the vacuum hose from the bottom of the assembly.
4. Raise the engine enough to allow the stud to be released from the upper bracket without obstruction. Remove the assembly.
5. Installation is carried out in reverse order.
Note: Final tightening of the support fasteners to the required force should be performed only after the power unit has been lowered to the normal position. Proceed to the procedures listed in the section Final stage of tightening the fasteners of all supports.
The final stage of tightening the fasteners of all supports
1. In order to maximally extend the service life of rubber-metal mounts and reduce the level of noise and vibration, the final tightening of the mount fasteners with the required force should be carried out after lowering the power unit to the standard position (the car should be parked on a level horizontal surface).
Note: Use non-hardening sealant to lubricate the threaded portion of fasteners (bolts and nuts).
2. Make sure that the rubber bushings are not twisted or displaced from their seats. If more than one support was replaced, as well as when installing the power unit, tightening the support fasteners should be done in the following order:
- a) Front support;
- b) Rear support;
- c) Right support;
- d) Left support.