Yamaha PW3028A Service Manual page 18

SERVICING
VALVE ASSEMBLY
(A)
VALVE PLUG
O- RING
(C)
VALVE
(D)
SPRING
(F)
SPRING
RETAINER
(G)
O-RING
(H)
SEAL
(I)
VALVE
(D)
SPRING
(J)
SPRING
RETAINER
(K)
O-RING
(B)
(E)
SEAT
(E)
SEAT
(L)
REVERSE
PLIERS
Fig. 8
SEAL CHAMBER
18
(A) LOW PRESSURE SEAL
(B) SEAL CASE
(C) O-RING
(D) HIGH PRESSURE SEAL
(E) MALE ADAPTER
MANIFOLD
Fig. 9