Guide rail for crawler track

A crawler assembly for an earthmoving machine, the crawler assembly comprising:

• a plurality of shoes coupled together to form a continuous track, the track being configured to be driven around a perimeter of a crawler frame;
• a replaceable guide rail configured to be removably coupled to the frame, the guide rail including a surface contacting the shoes as the track is driven around the perimeter of the frame, the surface including a material that wears away as the shoes contact the surface;
• and
• a wear indicator positioned on the guide rail between a centerline of the guide rail and a lateral edge of the guide rail, the wear indicator being exposed as an opening extending through the outer surface of the guide rail as the shoes contact the guide rail.

A replaceable guide rail for a crawler of an earthmoving machine, the guide rail comprising:

• a base elongated along a centerline, the base including a flange;
• a hole extending laterally through the flange, the hole being configured to receive a fastener to secure a portion of the crawler to the flange;
• a guide member extending along the centerline and being configured to contact a track portion of the crawler and be worn down during movement of the track portion over the guide member, the guide member having a thickness that is reduced as the guide member is worn down;
• and
• a wear indicator positioned in the guide member between the centerline and the lateral edge of the guide member, the wear indicator configured to indicate whether the guide rail is in condition for replacement, the wear indicator being covered while the thickness is in a first range of thickness, and the wear indicator being exposed as an elongated opening extending through an outer surface while the thickness is in a second range of thickness.