BASE GP-3500 1252742 - Caterpillar

Illustration 1.
123-2152 Pilot Valve Group (part of 131-5914 Pilot Valve Group showing locations of valve spool (A). See view A-A in Illustration 2 for port locations.
Illustration 2.
View A-A shows the spool port locations on the pilot valve group. (B) Port 1.(C) Port 2.(D) Port 3.(E) Port 4.(P) Port P.(T) Port T.
Illustration 3.
134-7059 Spool Service Kit. Refer to Chart 1 for parts identification. (F) Two-grooves identification (two places).(G) 10.45 mm (.411 in).(H) 7.5 mm (.30 in).
Illustration 4.
134-7060 Spool Service Kit. Refer to Chart 2 for parts identification.(F) Two-grooves identification.(K) One-groove identification.(L) 8.45 mm (.333 in). (M) 6.0 mm (.24 in).