Page 4 – 28Hydraulic System Sand Pro & Infield Pro 3040/5040Wheel Motor Efficiency TestFigure 23TESTEROPENED BY SPOOL CAM PINTHIS SYMBOL INDICATESTHAT CHECK VALVE ISNOTE: SAND PRO/INFIELD PRO 5040SCHEMATIC SHOWNNOTE: Over a period of time, a wheel motor can wearinternally. A worn motor may by–pass oil causing themotor to be less efficient. Eventually, enough oil loss willcause the wheel motor to stall under heavy load condi-tions. Continued operation with a worn, inefficient motorcan generate excessive heat, cause damage to sealsand other components in the hydraulic system and af-fect overall machine performance.
