Description - jcb JS300 Service Manual

The motor is of the variable swash plate, axial piston type.
Pressurised oil is routed via rear flange A and timing plate
F into cylinder block D.
The fixed timing plate directs oil to force piston E against
swash plate C, until it reaches the end of its power stroke,
causing the cylinder block to rotate 180°. When the piston
reaches the end of its power stroke, the cylinder is
disconnected from the oil supply line and instead is
F
A
F-4
Traction Motor / Reduction Gear

Description

connected to the return line. The next 180° of cylinder
block rotation causes the piston to complete its cycle by
expelling the oil from the cylinder back to tank.
Altogether there are nine pistons, operating sequentially
as described above to provide smooth continuous rotation
of the cylinder block, which is spline coupled to drive shaft
B.
E D
Fig 1.
9813/5100-1
Section F - Transmission
C
Description
B
F-4