We remove the power unit mounts when dismantling the power unit assemblies, as well as when replacing the mounts themselves.
A characteristic defect of the mounts is the separation of the rubber layer, which causes knocking when starting the engine, as well as when driving over irregularities.
We show the removal of the mounts using the example of the F4R engine.
The right mount of the K4M engine suspension differs slightly in shape, but has the same attachment points.
Replacing the rear mount
We carry out the work on a lift or inspection pit.
We remove the engine sump protection (article — Removal of the engine protection, wheel arch liners and mudflaps).
Using a 21 mm socket, we undo bolt 1 and slacken the tightening of bolt 2 securing the mount to the gearbox.
We remove the mount.
Using a 21 mm socket, we undo the bolt securing the anti-vibration washer and the mount to the front suspension subframe.
We withdraw the bolt with the washer.
We remove the mount.
We install the rear mount in the reverse order.
Replacing the right power unit mount
We place a jack under the engine sump through a wooden block.
We withdraw from the holders the fuel supply pipes to the rail and the fuel vapour supply pipes to the resonator.
We withdraw the wiring harness holder from the opening in the mount bracket.
Using a 16 mm socket, we undo the three bolts securing the mount bracket to the upper timing drive cover.
We undo the three bolts securing the mount to the body.
We remove the right power unit mount.
Replacing the left power unit mount
We place a jack under the gearbox housing through a wooden block.
We remove the battery.
We withdraw the plastic battery tray.
We undo the two nuts securing the engine cooling system expansion tank.
We remove the tank from the studs of the body bracket and move the tank aside on the hoses.
Using a 16 mm socket, we undo the nut of the stud securing the mount to the gearbox bracket.
We undo the bolt of the upper mounting of the mount bracket to the left side member.
Using a 16 mm socket, we undo the bolt of the rear mounting of the mount bracket to the side member.
We slacken by a few thread turns the rear bolt of the lower mounting of the bracket to the side member.
We slacken by a few thread turns the front bolt of the lower mounting of the mount bracket to the side member.
We lower the power unit slightly so that the stud of the gearbox bracket comes out of the opening in the mount cushion.
We raise the mount so that the slots in the lower part of its bracket come off the shanks of the two bolts of the lower mounting.
We withdraw the left mount with the bracket as an assembly from the engine compartment.
Using an 18 mm socket, we undo the nut of the bolt securing the mount to the bracket.
We withdraw the bolt. We also undo the nut of the other bolt and withdraw the bolt.
We separate the mount and the bracket.
We install the left power unit mount in the reverse order.
