199000786 - H001 VEHICLE DRIFT

The vehicle tends to drift to the left and/or the right whilst driving in a straight line. If necessary, carry out a road test on a straight, flat road with no cambers. Check the effective drift from the path by very carefully loosening your grip on the steering wheel
Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
First of all check the type, state and inflation pressure of the tyres. Check that the tyres are correctly fitted and the wheels correctly fastenedMove on to Step 11. Tyre inflation pressure not correct2. Tyres unsuitable or worn3. Tyres not correctly fitted4. Wheel not correctly fastened1. Restore the correct tyre inflation pressure2. Replace the tyres3. Swap the front wheels round4. Tighten the wheels correctly
1WHEEL CHECKAll OKProblems encounteredOperation
Check:- That the wheels are correctly balanced;- That the wheels turn freely (brake calipers correctly fitted)Move on to Step 21. Wheels not balanced2. Front brake calipers not correctly fitted3. Rear brake calipers not correctly fitted1. Balance the wheels2. Restore the correct fitting or replace the brake calipers    Op. 3310A30 FRONT BRAKE CALIPER (ONE) - R.R 3. Restore the correct fitting or replace the brake calipers    Op. 3310B36 REAR BRAKE CALIPER (ONE), LEFT OR RIGHT - R.R
2FRONT GEOMETRY CHECKAll OKProblems encounteredOperation
Check the vehicle geometry and front wheel angles    Op. 4450A10 FRONT WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT - INCLUDES ADJUSTMENT IF NECESSARY Move on to Step 31. Geometry not correct2. Angles not correct1. Replace the suspension springs    Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/REASSEMBLY OF ASSEMBLY AT BENCH - R.R 2. Restore the correct angles where possible
3REAR GEOMETRY CHECKAll OKProblems encounteredOperation
Check the vehicle geometry and rear wheel angles    Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY Move on to Step 4Geometry not correctReplace the suspension springs    Op. 4420A40 L/H OR R/H REAR SUSPENSION COIL SPRING (ONE) - R+R
4UNDERBODY CHECKAll OKProblems encounteredOperation
Visually inspect the underbody.Check that there are no accidental knocks, dents or bent suspension arms.Move on to Step 5Damage to the front suspension in particularRestore or replace the damaged components
5WHEEL BEARINGS CHECKAll OKProblems encounteredOperation
Check the condition and the operation of the wheel hub bearingsMove on to Step 61. Front wheel bearing worn or damaged2. Rear wheel bearing worn or damaged1. Replace the wheel hub bearing    Op. 4450C32 ONE FRONT WHEEL HUB BEARING, LH OR RH - REPLACE 2. Replace the wheel hub bearing    Op. 4450D10 HUB FOR ONE REAR WHEEL, L/H OR R/H - R+R WITH WHEEL REMOVED - CHECK WHEEL GEOMETRY SEPARATELY
6BUSHES AND FLEXIBLE MOUNTINGS CHECK - FRONT AREAAll OKProblems encounteredOperation
Check the condition of the bushes and mountings. In order:- steering box rods;- wishbone flexible supports;- flexible mountings for anti-roll bar.Move on to Step 71. Steering box rods worn or damaged2. Wishbone supports worn or damaged3. Anti-roll bar mountings worn or damaged.1. Replace the rods    Op. 4110B10 STEERING LINKS - R+R ON VEHICLE - CHECK TOE-IN/TOE-OUT SEPARATELY 2. Replace the supports    Op. 4410B FRONT SUSPENSION TRACK CONTROL ARMS 3. Replace the mountings
7POWER UNIT SUPPORT MOUNTINGS CHECKAll OKProblems encounteredOperation
Check the condition of the mountings for the power unit, the engine reaction rod connected to the mechanical crossmember and that the mechanical crossmember is correctly centredMove on to Step 81. Power unit support mountings faulty2. Reaction connecting rod faulty3. Mechanical crossmember faulty.1. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque.    Op. 1008A POWER UNIT FASTENING 2. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque.    Op. 1008C POWER UNIT REACTION ELEMENTS 3. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque.
8DIFFERENTIAL CHECKAll OKProblems encounteredOperation
Check the condition of the differential: make sure, in particular, that there is no clearanceEnd of diagnosisIrregular operation of the differentialOverhaul or replace the differential    Op. 2110D MANUAL GEARBOX DIFFERENTIAL