BOLT 4777627 - Caterpillar

Personal injury or death can occur if personnel are trapped between the wheel and the frame.The steering system is hydraulically controlled and wheels can crush personnel during movement.Use caution when working between the wheels and the frame. If the wheels must be turned, ensure that all personnel are clear of the machine before any movement.
Note: In order to access the breather, it may be necessary to use a portable access system (ladder, stair assembly, man lift, or other portable access system) that is suitable and compliant to local regulations.
Illustration 1 g03413839
Prepare the machine for maintenance. Refer to Operation and Maintenance Manual, "Prepare the Machine for Maintenance".
Remove breather (1) from each front wheel.
Install a new breather on each front wheel.