2-M8
ZD321, ZD326, ZD331, WSM
TRANSAXLE
(7) PTO System
PTO Clutch and Valve
The ZD series equipped with hydraulic independent PTO clutch (wet multi-plates type). Therefore, the engine
power could engage or disengage to the PTO shaft (18) without stopping the machine movement.
The PTO clutch (20) has three clutch discs (12), three clutch plates (4), clutch piston (13) and so on.
The clutch piston (13) is actuated by hydraulic oil flow the hydraulic pump through regulator valve (2).
(1) PTO Valve Lever
(2) Regulator Valve
(3) PTO Brake Plate
(4) PTO Clutch Plate
(5) 34T Gear (ZD321, ZD326)
33T Gear (ZD331)
(6) Input Shaft
(7) 43T Gear (ZD321, ZD326)
39T Gear (ZD331)
(8) 35T Gear
(9) Hydraulic Pump
(10) Center Case, Rear Cover
(11) 32T Gear
(12) PTO Clutch Disc
(13) Piston
(14) PTO Brake Disc
(15) PTO Case
(16) Center Case
(17) Center Case, Front Cover
(18) PTO Shaft
(19) Oil Filter Cartridge
(20) PTO Clutch
A : To Oil Cooler
B : To Hydrostatic
Transmission
C : From Hydraulic Pump
D : From Hydraulic Pump to
Valve Lever
E : From PTO Shaft to Center
Case (Drain Port)
F : From PTO Valve Lever to
PTO Shaft
G : To PTO Shaft