Volkswagen Type II Transporter 1200 Series Shop Manual page 244

4-Wheels and Tyres
4. Tl."RI<~ WEAR DIAGNOSIS
1.
Abnorinal wear on both sides of tread.
Possible cause
(a) Under inflation of tyres.
(b) Over-loading.
2. Abnormal wear in centre of tread.
Possible cause
(a) Over inflation of tyres.
3. Abnormal wear on inside of tyres.
Possible cause
(a) Insufficient camber angle.
(b) Sagging front torsion bars.
(c) Loose or worn front hub bearings.
(d) Bent stub axle or steering knuckle support.
(e) Loose or worn torsion arm components.
4. Abnormal wear on outside of tread.
Possible cause
(a) Excessive camber angle.
(b) Incorrect link pin shims fitted.
S. Spotty or irregular wear.
Possible cause
(a) Static or dynamic unbalance of wheel and tyre
assembly.
(b) Lateral run-out of wheel.
(c) Excessive play in wheel hub bearing.
(d) Excessive play in steering knuckle ball joints
link pins.
6. Lightly worn spots at centre of tread.
Possible cause
(a) Static unbalance of wheel and tyre assembly.
(b) Radial run-out (eccentricity) of wheel.
7. Flat spots at centre of tread.
Possible cause
(a) Eccentric brake drum.
(b) Repeated severe brake application.
(c) Lack of tyre rotation.
244
Remedy
Check and inflate to recommended pressures.
Reduce maximum loading.
Remedy
Check and reduce to recommended pressures.
Remedy
Check front end alignment and adjust as necessary.
Check and renew faulty components.
Check and adjust or renew hub bearings.
Check and renew faulty components.
Check and renew faulty components. Alignfront end.
Remedy
Check front end alignment and adjust as necessary.
Check and instal recommended shim packs.
Remedy
Check and balance wheel and tyre assembly.
Check and true-up or renew wheel.
Check and adjust or renew hub bearing.
Check and renew ball joints or link pins.
Remedy
Check and balance wheel and tyre assembly.
Check and renew wheel.
Remedy
Check and renew brake drum.
Revise driving habits.
Periodically change tyres by rotation of
wheel/tyre assembly.