Question 1

How to check the front driveshaft and steering for Diesel engines on Audi 100?

Accepted Answer

In order to examine thefront suspension and the steering, lift the front of the car and place it on axle stands. Regularly examine the balljoint dust covers and steering rack gaiters to see any splits, chafing or deterioration of these parts, as wear may result in loss of lubricant and dirt ingression, which may cause a rapid deterioration of these parts. On cars with power steering, inspect the hoses of the fluid system in relation to chafing, and look at the joints of the pipes and hoses to see whether there are any leakages, and at the joints of the pressure pipes by the steering gear rubber gaiters, which could be evidence of broken seals. Test roadwheel by holding at the 12 o clock and 6 o clock positions and ensuring that there is minimal free play as far as the hub bearing is concerned but that excessive movement is something that needs further examination. When the movement is less when the footbrake is pushed down then the bearings of the hubs will be defective; otherwise the suspension joints or mountings could be worn. Then be sure to hold the wheel at 9 and 3 o'clock to examine any movement, which might be an indication of wear in the hub bearings or balljoints of the steering track-rods. Test to understand whether the suspension mounting bushes are worn out, using a large screwdriver or a flat bar, expecting a certain degree of motion but observing excessive motion or obvious destruction. When the vehicle is on the wheels, make an assistant turn the steering wheel a little and there should be minimal lost movement between the steering wheel and the roadwheels, otherwise check the joints, mountings and steering column universal joints with regard to wear. In case of the suspension strut or shock absorber, verify that there is no leakage of fluid around the body or the rubber gaiter; the latter will be a sign of internal faults that will necessitate the replacement of the said strut or shock absorber and they should be replaced together in pairs on the same axle. Check the efficiency by bouncing the vehicle at all the corners; the vehicle should not rebound too much out of position. Check the top and bottom fixings. In the case of driveshafts, when the vehicle is elevated, rotate the steering wheel to full lock and rotate the roadwheel to check the outer CV joint rubber gaiters of the driveshafts are not torn or worn open and the clips that hold them in place are fixed. Do the same with the inner CV joints, replacing any torn gaiters. Lastly, inspect the general state of the CV joints by holding the driveshaft and attempting to rotate the wheel, and then holding the inner joint and rotating the driveshaft; any excessive movement is evidence of wear in the joints, driveshaft splines, or a loose retaining nut.

Question 2

What precautions should be taken when handling the driveshaft to prevent bending and ensure proper installation on Audi A4?

Accepted Answer

One should take care not to bend the driveshaft more than 25 degrees, and it is preferable to hold the two parts straight with a holding fixture, which can be a piece of 2x4 of the right size with wooden blocks on one end. When there is no available support that holds up the driveshaft in a level plane, a floor jack or assistance would be used. Today, there are no spare parts of the driveshaft, and in case such components as CV joint, U-joint, or center support bearing are damaged, the whole drive shaft has to be changed; it is advisable to hire a specialist on the driveline to get advice on the possible repair. One should start by raising the vehicle safely on jackstands and then take off the back part of the exhaust system. Peel off and remove the front rivets/mounting fasteners of the heat shield, one side of the mounting fastener at a time and align the center support bearing bracket tabs with the center of the outer holes of the floor pan. Align the relationship between the CV joints and flanges and clamp each end of the driveshaft and loosen the bolts that fix the CV joints to the companion flanges, avoiding the rotation with a chain wrench. Then detach the fasteners connecting the center support bearing bracket to the floorpan, and any shims and record their locations and then take pains to lower and remove the driveshaft underlying the vehicle. Removal should be reversed, so it is necessary to install fresh gasket material and remove old CV joint bolts and install new ones, install new gaskets, replace the heat shield (which dropped out of place) and install any shims in their correct places. Prior to installing the center support with the bracket fasteners, ensure that the centering tabs are aligned with the holes on the outer floorpan, and new sheet metal rivets/clips are fitted on the heat shield front mounting holes, and lastly, tight all the fasteners accordingly to the recommended torque values.

Genuine Audi Driveshaft

103 Driveshafts found

Audi Drive Shaft Part Number: 5WA-521-101-H

Audi Drive Shaft Part Number: 8S0-521-101-J

Audi Drive Shaft Part Number: 5N0-521-101-N

Audi Drive Shaft Part Number: 5Q0-521-101-BJ

Audi Drive Shaft Part Number: 4M0-521-101-CK

Audi Drive Shaft Part Number: 5Q0-521-101-BH

Audi Drive Shaft Assembly Part Number: 5QF-521-101-P

Audi Propeller Shaft Part Number: 8W6-521-101-D

Audi Drive Shaft Part Number: 8W6-521-101-H

Audi Drive Shaft Assembly Part Number: 8W0-521-101-H

Audi Drive Shaft Part Number: 4B0-521-106-D

Audi Drive Shaft Part Number: 8S0-521-101-G

Audi Drive Shaft Assembly Part Number: 4D0-521-101-T

Audi Drive Shaft Assembly Part Number: 4D4-521-101-C

Audi Drive Shaft Part Number: 4N4-521-101-F

Audi Drive Shaft Part Number: 4N4-521-101-J

Audi Drive Shaft Part Number: 4N4-521-101-H

Audi Propeller Shaft Part Number: 8T0-521-101-AC

Audi Drive Shaft Part Number: 80A-521-101-C

Audi Drive Shaft Part Number: 80A-521-101-A

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