Kubota M5040 Workshop Manual page 384

M5040, M6040, M7040, WSM
Grand Seal, Needle Bearing, Sleeve and Spool
1. Remove the retaining ring (1) with a screw driver.
2. Hold the control valve unit vertically and spool and sleeve align
the cross pin parallels to flat side of housing (flow priority valve
mounting side), the cross pin is visible through open end of spool.
3. At this time, take care so as not to allow the cross pin to be caught
in the groove of the housing. If the cross pin is caught, adjust its
position with a fingertip.
4. Push the spool and sleeve to the allow direction and remove the
seal grand bushing (3) with dust seal (2) and quad ring seal (5).
5. Remove the O-ring (4) from the housing (12).
6. Remove the dust seal from the seal grand bushing (3).
7. Remove the O-ring (4).
(When reassembling)
• Replace O-ring with new one.
Apply transmission oil to the dust seal, quad ring seal and O-ring.
8. Remove the quad ring seal (5) from the sleeve (9).
9. Remove the bearing races and needle bearing from valve
assembly.
(When reassembling)
• Apply transmission oil to the bearing races and needle bearing.
10.Draw out the sleeve (9) and spool (11) assembly from the gerotor
side, with the port surface of the housing downward. At this time,
take care so as not to allow the dowel pin to be caught in the
groove of the housing (12). If the dowel pin is caught, adjust its
position with a fingertip and draw out the sleeve and spool
assembly slowly.
IMPORTANT
• As the clearance between the housing and sleeve is very
narrow, do not forcibly draw out the sleeve.
(When reassembling)
• When fitting the sleeve (9) and spool (11) assembly into the
housing (12), apply clean transmission oil to the assembly and
then insert it while turning it slowly, taking care so that the parts
are not inclined. Also, pay attention to the dowel pin so that it is
not caught in the housing grooves. If the pin is caught, adjust its
position with a fingertip.
(1) Retaining Ring
(2) Dust Seal
(3) Seal Grand Bushing
(4) O-ring
(5) Quad Ring Seal
(6) Bearing Race
7-S15
STEERING
(7) Needle Bearing
(8) Pin
(9) Sleeve
(10) Centering Spring
(11) Spool
(12) Housing
W1015723
KiSC issued 06, 2008 A