Komatsu PC88MR-10 Shop Manual page 1412

90 Diagrams and drawings
Symbols in hydraulic circuit diagram
Symbols
90-4
Check valve
Suction (with strainer)
Tank and return pipe
Filter
Oil cooler
Stop valve
Drive shaft (unidirectional)
Drive shaft (bidirectional)
Hydraulic pump
Note: Black triangle shows outlet port
Variable capacity hydraulic pump
Hydraulic motor
Note: Two black triangles in the figure show direction of oil entering
hydraulic motor depending on the oil entry port, the direction of rotation is
reversed.
Servo piston
PPC valve
Substances
PC88MR-10