I just acuired a D6h and my parts book says for example: CAB AR........(page) 336, CAB GP.......339. Once you tell me I'm going to go duh but what is GP and AR.
Cab arrangement and cab group
It's all to do with Cat's hierarchical parts structure. From the bottom up we have a part Which may or may not be part of an assembly Which may or may not be part of a group of parts and/or assemblies Which may or may not be part of an arrangement of parts/assemblies/groups An arrangement is the highest level and usually associated with a machine's serial number.