PUMP GP-F XFR 20R0978 - Caterpillar

The housing number determines whether the group is an earlier or later group.If the housing part number "8G2392" is on the face of the housing where shown in the illustration, this clutch and brake group contains the EARLIER housing, bearings, etc. Refer to the Parts Book Microfiche for parts (these affected parts are the same for tractors with either the LGP or standard width track).
If the housing part number "5G8126" is on the face of the housing, this clutch and brake group contains the LATER housing, bearings, etc. Refer to the illustration for the correct new parts that are not yet shown in the microfiche. All other parts within this later built group are the same as the earlier group, and are shown in the microfiche. These affected parts are the same for tractors with either the LGP or standard width track.