Volkswagen Golf Service & Repair Manual: On a regulated roller dynamometer with contra-rotating rollers for
four-wheel drive vehicles
 Note
| The brake test must be performed on a controlled
contra-rotating single-axle roller dynamometer for four-wheel
drive vehicles. |
| “Contra-rotating” means that the dynamometer rollers of the
single-axle roller dynamometer are driven forwards on one side
and backwards on the opposite side. |
| The rollers drive the wheels of one axle in opposite
directions to avoid transmitting torque to the other axle. |
| “Regulated” means that the speed of the brake test stand
rollers is so controlled so that there is no difference in speed
during the brake test. |
| This prevents the transfer of a force through the stationary
wheels (not on the set of rollers) via the propshaft to the
rotating wheels on the rollers. |
| The forward rotating wheel is measured during the test,
which means two brake tests per axle must be performed. |
| The maximum test speed must not exceed 6 km/h. |
| The test rigs authorised by Volkswagen fulfil these
requirements. |
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The drive is provided by the test rig.
For vehicles with a manual gearbox, ensure that the gear
lever is in neutral for the test. F ...
Note
If no test rig is available for four-wheel drive vehicles,
the brake test can also be carried out on a standard single-axle
roller dynamometer as ...
Other materials:
Refrigerant line with restrictor
Observe safety precautions
→ Chapter „Safety precautions when handling refrigerants“.
–
Comply with notes
→ Chapter „Working on refrigerant circuit“.
–
Observe sa ...
Instructions for use of flanging tool
Unbolt relevant brake line at brake caliper or wheel brake
cylinder; catch escaping brake fluid and dispose of this as per
regulations.
–
Cut through brake line at a suitable point (straigh ...
Changing a wheel
Fig. 226 Changing a wheel: removing the
wheel bolts with the screwdriver handle
First read and observe the introductory information
and safety warningsRemoving the wheel
Read the checklist.
Loosen the wheel bolts.
Jack up the vehicle.
Using the hexagonal socket in the scr ...
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General information
Without roller dynamometer for four-wheel drive vehicles