Audi Workshop Service and Repair Manuals

Renewing subframe bushes Special tools and workshop equipment required

t  Engine and gearbox jack -V.A.G 1383 A- with universal gearbox support -V.A.G 1359/2- t  Torque wrench -V.A.G 1331- t  Torque wrench -V.A.G 1332-

t  Foot pump with high-pressure hose -V.A.G 1389 A/1- If there is a hand pump -V.A.G 1389/1- available in the dealership it can be converted to a foot-operated pump. To do this, use the conversion set -V.A.G 1389/4-. Special tools and workshop equipment required

t  Hydraulic wheel bearing tool -V.A.G 1459 B- t  Hollow piston cylinder HKZ-15 -mit Druckstück E-0-204-T hydraulisch- t  Pull rod -E-0-217+218- t  Special nut -E-8-214- t  Thrust piece -E-5- t  Assembly tool -T40033/1- t  Support ring -T40033/2- t  Tube -T40033/3- t  Support -T40033/4- t  Assembly tool -T40033/5- t  Support -T40033/6- t  Spindle -T40034- t  Nut -T40034/1- t  Nut -T40034/2-   Note t  The same special tools and workshop equipment can be used for renewing the subframe bushes on vehicles with front-wheel drive and vehicles with four-wheel drive. t  The subframe bushes are hydro-bushes, not conventional bonded rubber bushes → Parts catalogue t  The bushes can only be removed and installed with the subframe lowered. t  Mark position of bushes in relation to subframe before removing.

Removing front/rear hydro-bushes –  Remove wheels. –  Remove coil springs (left and right) → Chapter. –  Only if front hydro-bush is being renewed: remove rear underbody trim (left/right). 1 -  Underbody trim (left-side)

–  If fitted, remove diagonal struts -1- and -2- → Chapter. Only for rear hydro-bushes –  Remove anti-roll bar → Chapter.

Front and rear hydro-bushes (continued) –  Apply engine/gearbox jack -V.A.G 1383 A- with universal gearbox support -V.A.G 1359/2- and a suitable wooden block to subframe/final drive (illustration shows vehicle with front-wheel drive). –  Wind strap around subframe/final drive.   Note t  If a front hydro-bush is being renewed, loosen only the front subframe bolts. t  If a rear hydro-bush is being renewed, loosen only the rear subframe bolts. t  If a further subframe bolt is loosened (front or rear), wheel alignment must be performed following installation. –  Loosen front or rear subframe bolts. –  Carefully lower subframe approx 5 cm. –  Only remove those subframe bolts where the hydro-bush is to be renewed.

–  Using felt pen or similar, mark position of hydro-bush -1- in relation to subframe -2- (illustration shows subframe of a front-wheel drive vehicle). Arrow A: direction of travel Arrows B and C: markings

–  Apply special tools as shown in illustration. 1 -  Nut -T40034/1- or -T40034/2- 2 -  Assembly tool -T40033/1- 3 -  Support ring -T40033/2- 4 -  Tube -T40033/3- 5 -  Support -T40033/4- 6 -  Hollow piston cylinder -HKZ-15- 7 -  Thrust piece -E-5- 8 -  Special nut -E-8-214- 9 -  Spindle -T40034- 10 - Subframe –  Take up play in special tools. –  Extract hydro-bush by actuating pump.   Note When pulling out the hydro-bush using hydraulic wheel bearing tool -V.A.G 1459 B-, the tool must be repositioned for removal. Installing front/rear hydro-bushes Front and rear hydro-bushes are different. Ensure correct parts are used when installing. → Parts catalogue The hydro-bush must be installed facing in the correct direction, note the marks on the subframe for this purpose.

–  Set up special tools with hydro-bush on subframe as illustrated Ensure correct position when attaching support -T40033/6-. 1 -  Nut -T40034/1- or - T40034/2- 2 -  Support -T40033/6- 3 -  Hydro-bush 4 -  Assembly tool -T40033/5- 5 -  Hollow piston cylinder -HKZ-15- 6 -  Thrust piece -E-5- 7 -  Special nut -E-8-214- 8 -  Spindle -T40034- 9 - Subframe –  Take up play in special tools with hydro-bush. –  Apply assembly lubricant G 294 421 A1 diluted with water (ratio 1:100) all round hydro-bush.

–  Ensure that the ends of the rubber beads of the hydro-bush -1- line up with the markings -arrows B and C- on the subframe -2-. -Arrow A- direction of travel –  Press in hydro-bush as far as stop by actuating pump.   Note t  When pulling in the hydro-bush using special tool -V.A.G 1459 B-, the tool must be repositioned during installation. t  Ensure that the hydro-bush remains straight during the first stage of installation, otherwise the outer ring may be damaged. –  Lift subframe with engine and gearbox jack -V.A.G 1383 A-. –  Install and tighten new subframe bolts with new washers → Item and → Item (front-wheel drive), or → Item and → Item (four-wheel drive). Rear hydro-bushes only: –  Install anti-roll bar → Chapter. Front and rear hydro-bushes (continued)

–  If fitted, install diagonal struts -1- and -2- → Chapter. –  Install underbody trim (left and right). –  Install coil springs (left and right) → Chapter. –  Fit and secure wheel → Wheels and tyres; Rep. Gr.44. –  Check wheel alignment if more than 2 bolts for hydro-bushes have been loosened → Chapter. Wheel alignment must always be checked and adjusted if necessary using VW/Audi-approved equipment.