Examination
1. The engine is rigidly connected to the transmission assembly and has a common suspension with it, which is made in the form of a subframe and 4 supports - the right and left supports are attached to the spars; the front and rear supports are attached to the subframe. The general layout of the suspension supports of the power unit is shown in resist. illustrations.
19.1 The general schematic diagram of the location of the power unit suspension mounts on Opel models: 1. Right leg, 2. Frame, 3. Right leg bracket, 4. Front leg, 5. Subframe beam, 6. Rear leg bracket, 7. Torque damper, 8. Left leg, 9. Subframe, 10. Transmission mount, 11. Engine, 12. Transmission
2. If necessary, in order to ensure freedom of access, jack up the front of the car and place it on props. If equipped, remove the crankcase protection.
3. Check up a condition of rubber pillows of support. In case of detection of cracks, delaminations, separation from the metal substrate, signs of rubber hardening, etc. defects, replace the support.
4. Using a torque wrench, check the tightening forces of the fasteners of the supports.
5. Levering the mount, check the supports for signs of excessive play - if necessary, ask an assistant to rock the unit in different directions and observe the behavior of the supports. The backlash present in new components leads to rapid wear of the bearings. Replace defective components.
Replacement
Note: Before removing components, mark their installation positions with paint.
Right support
6. To remove the right support, it is necessary to install special tools and unscrew the bolts securing the support to the side member and to the engine bracket
Front and rear supports
7. To remove the front support, cock the parking brake, then jack up the front of the car and place it on props.
8. To unload the support, support the engine with a trolley jack, - in order to distribute the load, lay a wooden block between the head of the jack and the oil pan. If you have the appropriate equipment, you can hang out the power unit as when replacing the right support.
Attention! When jacking up the power unit, be careful - do not load the exhaust system, if necessary, disconnect the intake pipe from the exhaust manifold
9. Give a nut of fastening of a support to an arm and remove it together with a washer. Remove fixing bolt (see illustration).
19.9 Nut fastening the front support to the bracket
10. Turn out bolts of fastening of an arm of a support to a case of transmission (see illustration) and remove it complete with cushion.
19.10 Bolts for securing the front support bracket to the transmission housing
11. Check the condition of all support components. Replace worn and damaged parts.
12. Installation is made in an order, the return to removal, tighten fixing bolts and a nut with demanded effort. Lower the car to the ground.
19.13 Bolts (1) rear support mounts (2) engine - the arrows indicate the bolts of the front section of the exhaust system
13. Mounting of the rear support is shown in Ref. illustrations The procedure for removing the rear support by the cavity is similar to that described above.
Left support
14. Set the parking brake, jack up the front of the car, place it on jack stands and remove the crankcase protection.
15. Remove the battery, unscrew the mounting bolts and remove the battery support tray
16. To remove the left support, you can use the same set of tools as for removing the right one, or support the transmission with a trolley jack, laying a block of wood between the jack head and the pallet to distribute the load.
17. Turn out fixing bolts and remove a basic arm of fastenings from transmission (see illustration).
19.17 Six bolts of fastening of the left support
18. Turn out four fixing bolts with heads like TORX and remove a support, separating it from a body (see illustration).
19.18 To release the support from the side member, give four TORX head bolts
19. If necessary, the support can be disassembled, for which it is necessary to unscrew a single bolt threaded through the center of the pillow (see illustration).
19.19 To remove the cushion, unscrew the central bolt
20. Installation is carried out in the reverse order. Make sure all fasteners are tightened to the correct torque.
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