Operation Manual

BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM
TRANSAXLE
(2) Oil Flow
3TAAAAFKP002A
(11)
A
(7) (8) (9)
(13)
(15)
(17)
(16)
(18)
A: A Port
B: B Port
C: C Port
D: D Port
(1) Cylinder Block (Pump)
(7) High Pressure Relief Port
(13) Power
Steering Controller
(2) Swash plate
Plug (Forward) (14) Hydraulic Pump
(3) Piston
(8) Charge Relief Valve
(15) Flow Priority Valve (Hydraulic
(4) Cylinder Block (Motor)
(9) High Pressure Relief Port
Control Valve)
(5) Check and High Pressure
Plug (Reverse)
(16) Position Control Valve
Relief Valve (Forward)
(10) PTO Clutch Valve
(17) Oil Strainer
(6) Check and High Pressure
(11)
PTO Relief Valve
(18) Transmission Case
Relief Valve (Reverse)
(12) Oil Filter Cartridge
The pump and motor are joined
in a closed hydraulic loop and most of oil circulates within the main oil circuit. A
little oil lubricates and oozes out from the clearance between the moving parts
of the case. Then oil in the main oil
circuit
of the HST needs to be supplied a want.
The oil from the power steering circuit flows into the HST for charging.
The charge oil aids smooth operation of pistons
for pump and motor. The charge oil passes through the oil filter
cartridge to charge relief valve port. The rest
of oil passes through the charge relief valve into the HST housing. And
overflow oil from
HST housing return to the transmission case.
2-M3