Table of contents: Replacing the front silent block ↓ Installation ↓
Install the car on a lift. Remove the coil springs. To replace the silent block, lower the front part of the subframe. There is no need to remove the subframe.
Replacing the front silent block
Remove the cover "1" and "2". Remove the fairings from the wheels.
If present, remove stone guard "2".
Install a powertrain lift with a universal gearbox grip "V.A.G 1359/2" under the subframe "1". Place a suitable block "2" under the subframe "1".
Unscrew bolt "1" on the left and right.
Screw the removed bolts "1" on the right and left into the body as shown in the figure.
Screw in bolt "1" so that the distance "a" is 4 cm.
Unscrew bolt "2". Lower the subframe only by 4 cm. Press the main gear up through the cardan shaft "1". At the same time, insert the mandrel "T40186/1" and the lead screw "T10254/5" with the nut "T10254/4" (the help of a 2nd mechanic will be required).
- 4. Lead screw "T10254/5". The journal of the lead screw faces downwards
- 5. Nut "T10254/4"
- 6. Stop "T40186/1"
When pressing out and pressing in the silent block, pay attention to the fact that the lead screw "4" does not fit against the threaded hole "3" of the main gear. If it is impossible to push the lead screw "T10254/5" through the through hole of the inner rod of the silent block, it should be drilled out. Drilling should be done in several stages with drills of different diameters. During drilling, make sure that the drill does not damage the threaded hole "3" of the main gear; if necessary, put a suitable object under it. Install drill "1" with the drill shown in the figure on silent block "2" and drill out in several stages.
Stage 1, 11mm drill, Stage 2, 11.5mm drill, Stage 3, 12mm drill.
If necessary, unscrew the support "T10205/13" and screw in a support with a "small" internal diameter "arrow" from the hydraulic cylinder "VAS 6178" instead.
Install the tools as shown in the figure on the front silent block.
- 1. Nut "T10254/4"
- 2. Stop "T40186/1"
- 3. Subframe
- 4. Pipe "T40033/3"
- 5. Support ring "T10205/4"
- 6. Hydraulic cylinder "VAS 6178"
- 7. Nut "T10254/4"
- 8. Lead screw "T10254/5". The lead screw journal faces downwards.
Attention. During pressing out, hold the hydraulic cylinder "VAS 6178". The silent block is disconnected by a "jerk". Falling tools and silent block can cause injuries!
Installation
Installation in reverse order. In this case, the following must be taken into account: before installing the silent block, make sure that the lead screw "T10254/5" passes through the through hole of the inner rod of the silent block. If it is impossible to push the lead screw "T10254/5" through the through hole of the inner rod of the silent block, it should be drilled out. Easily clamp the new silent block "2", as shown in the figure, in a horizontal position in a vice "1" with protective jaw pads (avoid damaging the outer bushing of the silent block). Install drill "3" with a drill bit, as shown in the figure, on silent block "2" and carry out drilling in several stages.
Stage 1, 11mm drill, Stage 2, 11.5mm drill, Stage 3, 12mm drill.
Apply a solid "arrow" mark across the grooves, a = 90°.
The mark is necessary for aligning the silent block relative to the subframe. When tightening the support, the grooves are closed with a tool. Insert the silent block with the self-applied "arrow" mark into the subframe so that the mark accurately indicates the direction of movement. Install the tools, as shown in the figure, on the front silent block.
- 1. Nut "T10254/4"
- 2. Stop "T40Q33/7"
- 3. Subframe
- 4. Silent block
- 5. Thrust washer "T40186/3"
- 6. Support ring "T10205/4"
- 7. Hydraulic cylinder "VAS 6178"
- 8. Nut "T10254/5"
- 9. Lead screw "T10254/4". The lead screw journal faces downwards.
Press the silent block into the subframe until it stops. Perform a visual inspection of the subframe for damage to the paintwork. If damage occurs to the varnished surface of the subframe after replacing the silent blocks, it must be repaired using an anti-corrosion coating, primer and black paint. Install in reverse order.
[Content source: the specified website: AUDIMANUAL.RU]