4.8 Service procedure Maintenance When required Check Measure the inflation pressure with a tire pressure gauge while the tires are cool before starting work. Inflation of tires Adjust the inflation pressure properly. When inflating a tire, use an air chuck which can be fixed to the air valve of the tire as shown in the figure. Do not work in front of the rim but work on the tread side of the tire. The proper inflation pressure is shown below. PSI Standard 36 NOTE The optimum inflation pressure differs according to the type of work. For details, see "Handling the tires (3-97)". WA150-5H – VEAM934100 4-39 Tire size Front wheels bar PSI bar 17.5 R25 XHA L3 3.5 50 2.5