Valtra 6550 - Page 810

757
Model Code Page
6250--8950
25440
44. DPS, Power Shuttle 4WD clutch
1. 10. 1999
1. 6. 1999
P2 (Y6)
P1 (Y4)
P3 (Y17)
P4 (Y11)
P5 (Y12)
P6 (Y2)
A
B
C
Lubricating oil
pressure test
point. *)
5Nm
20 Nm
Note! The end of the
valve spindle must
be almost flush with
the valve body.
*) From ser. no. J26434 incl. the
pressure test point is placed on
the bracket of the rearmost
pressure filter and a lubricating
oil pipe has been fitted between
the PTO and distributor piece.
Picture 16. Valve blocks in connection with HiTech Shuttle
A. DPS valve block
B. Shuttle valve block
C. Renewed servo valve block, see pages 440/24 and
420/20C.
Valve block A:
P1=Proportional solenoid valve of DPS foremost clutch C1
This valve is energised, when DPS ratios I or II have been
connected (transmission 650). The pressure test point of
this clutc h is the LH side point o n the block.
P2=Proportional solenoid valve of DPS middle clutch C2
This valve is energised, when DPS ratios I or III have been
connected (transmission 650). The pressure test point of
this clutc h is the RH side point on the block.
Valve block B
P3=Proportional solenoid valve of DPS rearmost clutch
C3 This valve is energised, when DPS ratios II or III have
been connected (transmission 650). The middle pressure
test point is for this clutch.
P4=proportional solenoid valve for forward clutch (F).
Energised when the forward driving has been connected.
The pressure test point is the RH side test point on the
block.
P5=proportional so lenoid valve for reverse clutc h (R). Ener-
gised when the reverse driving has been connec ted. The
pressure test point is the LH side point on the block.
P6=proportional solenoid valve for PTO.
Note! Concerning pr essure tests and pressure calibrations,
see under code 370 (Autocontrol V).
Note! The lubricating oil pressure can be measured in test
point (HPR) on the rear part of the suction strainer housing.
V alve block B is also shown on page 420/20D.