Yanmar YM276 Service Manual page 572

250-10.2
Power Shift Transmission
A
-
Sunion %men F - M a i n Relief Valve J -Power Shift Clutch Shaft
2767003
B
-
Internal Gear Pump
G
-
Delay Relief Valve
K
-
Rev-1st Clutch Pack
C
-
Canrer Plate
H
-
Valve Spool
L
-
2nd-3rd Clutch Pack
D
-
Rwulstor Cass I
-
Oil Manlold
M
-
Power Shift Lever
E
-
2nd Relief Valve
POWER SHIFT COMPONENTS
The power shift control system generates, directs, and
controls the pressure a n d flow of oil within the transmis-
sion. It also lubricates and cools the power shift clutcher
and plates.
Oil is drawn from the transmission case, through suction
tube and suction screen
(A).
The oil flow after passing
screen i s divided t o internal gear pump
(BI
and t o hydraulic
pump through hydraulic oil filter (Cartridge type).
The power shift control system consists of the following
components: power shift pump (El, center plate ( C ) .
regulator care (D),oiI manifold
(I),
power shift clutch shaft
(J1,valve spool
(HI
and valves
(E.
F.
G).
When the power shift lever is moved from one speed to
another, control i s achieved by these components, which
are described on the following pages.
,--
SME276Olr183W YM276
and
276D
K;"omoro, Printed in Japan