Note. Powertrain suspension mounts rarely need attention, but damaged pads should be replaced without delay to avoid increased stress and premature wear on transmission line components.
On the models under consideration, the suspension of the power unit is implemented using four rubber-metal supports. With the help of the central front and rear supports, the engine block is attached to the load-bearing cross beam laid from below. The right support is attached to the front timing cover and the vehicle frame. The left support is used for mounting the transmission part of the unit on the frame.
Examination
1. To check, it is necessary to slightly raise the engine, completely unloading the supports.
2. Jack up the car and put it on stands. Hang the unit from above on a winch or beam.
3. Check the mount pads for cracks, signs of rubber hardening and delamination from the center metal bushings.
4. Estimate the amount of play between the support assemblies and the power unit / vehicle frame (use a pry bar or a large screwdriver as a lever). If there is any slack, lower the machine and tighten the support fasteners.
5. Pillows must be treated with a special protective compound to avoid rubber destruction.
REPLACEMENT
Disconnect the negative cable from the battery.
Note. If the stereo system installed in the car is equipped with a security code, before disconnecting the battery, make sure that you have the correct combination to activate the audio system! Apply the parking brake, jack up the front of the vehicle and place it on jack stands. Remove the crankcase protection.
Front and rear engine mounts (central)
1. Place a trolley jack under the transmission housing, as close as possible to the transverse beam - in order to distribute the load, lay a block of wood between the jack head and the housing. Cock the jack, fully unloading the corresponding suspension mounts of the power unit.
2. Turn out through bolts of fastening of support to a cross beam.
3. Turn out fixing bolts and remove a cross beam from the car chassis.
4. Turn out through bolts of fastening of support to arms on the block of the engine. Remove supports.
5. Installation is carried out in the reverse order.
Note. The final tightening of the support fasteners with the required force should be carried out only after the power unit has been lowered to its normal position. Proceed to the procedures for the final stage of tightening the fasteners.
Right support
1. Hang the engine from above on a winch or beam.
2. Remove the upper bracket and turn out the through bolt of the support.
3. Slightly lift the engine, then give nuts of fastening of a support to the engine bottom bracket. Remove the support.
4. Installation is carried out in the reverse order.
Note. The final tightening of the support fasteners with the required force should be carried out only after lowering the power unit to its normal position. Proceed to the procedures for the final stage of tightening the fasteners.
Left support
1. Place a trolley jack under the transmission housing (not under the pallet, - models with AT), - in order to distribute the load, lay a wooden block between the jack head and the crankcase. Cock the jack, fully unloading the corresponding suspension mounts of the power unit.
2. Remove air cleaner assembly with intake duct (see chapter Power and exhaust systems). Turn out a through bolt of an arm of the left support of the power unit.
3. Slightly lower the transmission and unscrew the bolts securing the support to it. Remove the support assembly.
4. Installation is carried out in the reverse order.
Note. The final tightening of the support fasteners with the required force should be carried out only after lowering the power unit to its normal position. Proceed to the procedures for the final stage of tightening the fasteners.
The final stage of tightening the fasteners of all supports
In order to maximize the service life of rubber-metal supports and reduce the level of noise and vibration, the final tightening of the support fasteners with the required force should be carried out after lowering the power unit to its normal position (the vehicle must be parked on a level surface).
Note. The threaded part of the fastener should be lubricated with a special sealant to fix the threaded connections. 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, the support fasteners must be tightened in the following order:
- a) Bolts of fastening of a cross beam;
- b) Rear support;
- c) Front support;
- d) Left support;
- e) Right support.