Engine mounting - inspection and renewal

Engine in-car repair procedures / Engine mounting - inspection and renewal

Inspection
1 If improved access is required, raise the front of the car and support it securely on axle stands (see “Jacking and vehicle support”).

2 Check the mounting rubbers to see if they are cracked, hardened or separated from the metal at any point: renew the mounting if any such damage or deterioration is evident.

3 Check that all the mounting’s fasteners are securely tightened; use a torque wrench to check if possible.

4 Using a large screwdriver or a crowbar, check for wear in the mounting by carefully levering against it to check for free play. Where this is not possible, enlist the aid of an assistant to move the engine/transmission back and forth, or from side to side, while you watch the mounting. While some free play is to be expected even from new components, excessive wear should be obvious. If excessive free play is found, check first that the fasteners are correctly secured, then renew any worn components as described below.

Renewal
5 Disconnect the battery negative cable and position it away from the terminal.

Front left hand engine mounting 6 Position a trolley jack underneath the engine and position it that such that the jack head is directly underneath the engine /bellhousing mating surface. Alternatively, position an engine lifting beam across the engine bay, forward of the suspension strut top mountings, and support the engine using the lifting eyes provided on the cylinder head.

7 Raise the jack/lifting beam jib until it just takes the weight of the engine off the front left hand engine mounting.

8 Slacken and withdraw the engine mounting through-bolt.

9 Slacken and withdraw the engine mounting-to-transmission bolts and remove the bracket.

10 Press the engine mounting rubber blocks and bush out of the crossmember cup.

11 Refitting is a reversal of removal. Before tightening the engine mounting through-bolts, lightly rock the engine and transmission back and forth to settle the mountings. Finally, tighten all mounting bolts to the specified torque.

Right hand engine mounting 12 Mount an engine lifting beam across the engine bay and attach the jib to the engine lifting eyes on the cylinder head. Alternatively, an engine hoist can be used. Raise the hoist/lifting beam jib to take the weight of the engine off the engine mounting.

13 Refer to Chapter 1 and remove the auxiliary drivebelt( Refer to Chapter 5A and remove the alternator. On G40 models, refer to Chapter 4B and remove the supercharger.

14 Slacken and withdraw the engine mounting through-bolt.

15 Unbolt the engine mounting bracket from the cylinder block.

16 Unbolt the engine mounting block from the body and remove it from the engine bay.

17 Refitting is a reversal of removal. Before tightening the engine mounting through-bolts, lightly rock the engine and transmission back and forth to settle the mountings. Finally, tighten all mounting bolts to the specified torque.

Rear engine/transmission mounting 18 Disconnect the battery negative cable and position it away from the terminal.

19 Position a trolley jack underneath the engine and position it that such that the jack head is directly underneath the engine/ bellhousing mating surface. Alternatively, position an engine lifting beam across the engine bay, forward of the suspension strut top mountings, and support the engine using the lifting eyes provided on the cylinder head.

20 Raise the jack until it takes the weight of the engine off the rear engine/transmission mounting.

21 Working underneath the vehicle, slacken and withdraw the engine mounting throughbolt.

Be sure that the jack/lifting beam is taking the weight of the engine before removing the bolt completely.

22 Unbolt the mounting bracket from the end of the transmission casing.

23 Unbolt the engine mounting block from the body and remove it from the engine bay (see illustration).

12.23 Removing the rear engine mounting block

24 Refitting is a reversal of removal. Before tightening the engine/transmission mounting through-bolts, lightly rock the engine and transmission back and forth to settle the mountings. Finally, tighten all mounting bolts to the specified torque.