TIGOR EV SERVICE MANUAL

WHEELS AND TYRES 18 B. TYRE REPLACEMENT 1. Always use a tyre changing machine to replace tyres. NOTE For replacing tyre, follow the manufacturer’s (of tyre replacement machine) manual for installation instructions, recommendations and any other additional information. 2. Inspect the valve and replace the stem if necessary. 3. After replacing the tyre, inflate it to the specified pressure so that beads are completely sealed. 4. Balance the wheel(s) (Refer wheel balancing procedure) WARNING (a) Do not use hand tools or tyre irons alone to change tyres as they may damage tyre beads or wheel rim. (b) Do not exceed specified pressure when inflating. (c) Do not stand near tyre when inflating. Bead may break when bead snaps over rim’s safety hump and cause serious personal injury. (d) Do not mix different types of tyres on the same vehicle such as radial, bias, and bias-belted tyres except in emergencies, because handling may be seriously affected and may result in loss of control. (e) Do not fit an inner tube to a tubeless tyre to overcome a problem of air leakage. C. WHEEL ASSEMBLY REPLACEMENT Typical defects that require Wheel assembly replacement: (a) Cracks in the wheel disc face, in particular the bolt hole area and the ventilation holes. (b) Deformations or abnormal imprints in the seats of the bolts / studs fixings. (c) Leaks in tubeless tyres derived by micro- cracks in the rim or by wear and tear marks on the rim-tyre matching surface. Bent rim flanges (generally due to impacts against obstacles) (d) Wheels with greater run - out may cause vibrations which may ultimately lead to replacement of the wheel assembly. (Refer wheel run out procedure to check wheel run out). NOTE  New wheel must be equivalent to the original wheel in terms of load capacity, diameter and rim with offset and mounting configuration.  Any repairs to wheels which involves welding or heating are not approved. All damaged wheels should be replaced.  It is not allowed to perform any technical modification on wheel assembly.