Komatsu Galeo PC138US-8 Shop Manual page 189

10 Structure, function and maintenance standard
Travel PPC valve
P : From self pressure reducing valve
P1 : L.H. reverse
P2 : L.H. forward
P3 : R.H. reverse
P4 : R.H. forward
T : To tank
PC138US, USLC-8
SEN02550-01
7