TRANSMISSION
L3301, L3901, L4701, WSM
3-M15
3. HYDROSTATIC TRANSMISSION (HST) MODEL
[1] Hydrostatic Transmission Assembly
(1) Structure
[A] L3301/L3901
The HST of this tractor is a built-in type to the clutch
housing.
HST assembly chiefly consists of HST case (clutch
housing case), variable displacement piston pump, fixed
displacement piston motor, charge pump and various
valves.
Refer to the next page for detailed parts in HST.
9Y1211012TRM0016US0
(1) Input Shaft
(2) HST Case
(Clutch Housing Case)
(3) Check and High Pressure
Relief Valve
(4) Output Shaft (Motor Shaft)
(5) Pump Shaft
(6) Case Relief Valve
(7) Trunnion Shaft
(8) Neutral Holder
(9) Charge Relief Valve
(10) Check and High Pressure
Relief Valve
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