Pump And Motor - wsm STW37 Workshop Manual

STW34, STW37, STW40, WSM

(3) Pump and Motor

(1) Piston
Pump and motor cylinder, each containing pistons, are connected by lines. Cylinders and lines are filled with oil.
Pistons ride against swashplates located in pump and motor.
In the pump, as the cylinder rotates, pistons move across the sloping face of swashplate and slide in or out of
their cylinder bores. The oil, forced out by the pump pistons, causes the motor pistons to slide out of their cylinder
bores.
In the motor, sliding out of the cylinder and moving across the sloping face of swashplate, the pistons rotate the
cylinder.
(2) Cylinder (3) Oil
3-M4
TRANSMISSION
(A) Pump
(B) Motor
(a) Swashplate
9Y1211109TRM0004US0
KiSC issued 11, 2014 A