Kubota M5 - Rear Remote Valve Installation

Theory of Operation

Sabanto’s Steward kit comes complete with a set of electro-hydraulic remote valves. 

The Kubota M5 tractors come factory equipped with cable-actuated rear remote valves. 

For the sake of simplicity, Sabanto includes a 2-spool, double-acting remote valve with each Steward kit.

Each valve spool is actuated by a pair of momentary on/off 12V electromagnetic coils.

The valve, plus all necessary brackets, hardware, hydraulic hoses and fittings are included.

Remote Valve Assembly

Remote Valve and Bracket Assembly

Remote Couplers For Models With Single Factory Rear Remote Valve

Remote Couplers For Models With Multiple Factory Rear Remote Valve

ITEM

QTY

PART NUMBER

DESCRIPTION

1

1

0102-MP-1016A

PLATE, REAR REMOTE VALVE MOUNT

2

1

0102-MP-1032A

BRACKET, REMOTE VALVE GUARD

3

1

0102-MP-1014A

BRACKET, REAR REMOTE VALVE BLKHD

4

3

9999-HA-1067A

FLAT WASHER, M14

5

3

9999-HA-1066A

SPLIT LOCK WASHER, M14

6

3

9999-HA-1065A

HEX HEAD BOLT, M14-1.5, 30 MM LONG

7

3

9999-HA-1052A

SPACER, UNTHREADED, ⅜ ID

8

1

9999-FP-3002A

REMOTE VALVE, 2-SPOOL, 21 GPM, DOUBLE-ACTING

9

2

9999-HF-1012A

STRAIGHT ADAPTER, -12 MALE ORB TO -10 MALE JIC 37

10

1

9999-HP-1011A

90° ADAPTER, -10 MALE ORB TO -10 MALE JIC 37

11

4

9999-HF-1014A

STRAIGHT ADAPTER, -10 MALE O-RING BOSS TO -8 MALE JIC 37

12

3

9999-HA-1092

HEX HEAD BOLT, M8-1.25, 90 MM LONG, PARTIAL THREADED

13

3

9999-HA-1005A

FLAT WASHER, M8, 316 SS

14

3

9999-HA-1006A

SPLIT LOCK WASHER, M8, 316 SS

15

4

9999-HF-1015A

BULKHEAD/NUT, -8 JIC M X 1/2 NPT + 3/4-16 NUT

16

4

9999-HF-1016A

HYDRAULIC COUPLER, 1/2 ISO AG X 1/2 FEMALE NPT

17

1

9999-HF-1010A

ADAPTER SLEEVE, POWER BEYOND (FOR P80 & Z80 VALVES)

18

2

9999-HA-1017A

FLANGED HEX HEAD BOLT, M8-1.25 MM, 20 MM LONG

19

3

9999-HA-1094

UNTHREADED SPACER, M10, 10 MM LONG X 16 MM OD

20

2

9999-HA-1095

FLAT WASHER, M10

21

1

9999-HA-1096

SPLIT LOCK WASHER, M10

22

1

9999-HA-1097

HEX HEAD SCREW, M10-1.25, 100 MM LONG

23

4

9999-HA-1098

FLAT WASHER, M8

24

2

9999-HA-1099

SPLIT LOCK WASHER, M8

25

2

9999-HA-1100

HEX HEAD SCREW, M8-1.25, 100 MM LONG

26

2

9999-EH-2001A

SWITCH BOX, MOMENTARY ON/OFF CONTROL FOR 2-SPOOL VALVE

27

1

9999-EH-2005

HARNESS, 2-SPOOL / 4-SOLENOID

28

1

9999-HH-2006A

HOSE, RM VLV PRESSURE -- (27 IN HOSE LENGTH)

29

1

9999-HH-2007A

HOSE, POWER BEYOND -- (16 IN HOSE LENGTH)

30

1

9999-HH-2008A

HOSE, TANK RETURN -- (13.5 IN HOSE LENGTH)

31

1

9999-HH-2009A

HOSE, RM VLV REAR SLICE-TOP RR OUTLETS -- (68” HOSE)

32

1

9999-HH-2010A

HOSE, RM VLV FRONT SLICE-BOTTOM RR OUTLETS -- (67” HOSE)

With the tractor's engine turned off, Connect a pressure gauge that is rated up to 3000 psi to any of the tractor's rear remote valve ports

With the following conditions, actuate the remote valve that the gauge is connected to:

Engine Speed:

• M5 ROPS: Approx. 2400 RPM
• M5 Cab: Approx: 2600 RPM

Oil Temp:

• 45 to 55 C (113 to 131 F)

The factory specifications are:

• 19.7 to 20.5 MPa
• 200 to 210 kgf/cm²
• 2850 to 2980 psi

If the pressure isn't to spec, consult your Kubota dealer to adjust the tractor's relief valve setting.

Preassemble Valve

Wrenches Required: 1” and 1 ¼” for fittings, phillips screwdriver

Preassemble Bulkhead components

Wrenches Required: 1” and 1 ⅛” for fittings

1. Apply sealant to bulkhead fittings
2. Thread hyd. Coupler to bulkhead fitting
3. Slide dust plug loop onto bulkhead fitting, then attach it to the bracket

Assemble brackets to tractor frame

Attach the Rear Remote Valve Mount Bracket:

1. Re-tap the M14-1.5 threaded bosses before attaching the valve mounting.
2. Mount the Rear Remote Valve Mount Bracket to the tractor using M14 bolts and washers provided.

Attach Bulkhead assembly to OEM remote valve stack

Mount rear remote valve bracket and fittings:

• Attach the bracket to the top of the factory remote valve as shown.

For tractors with a single OEM remote, utilize the longer M8 and M10 bolts, spacers, and washers included with this kit.

For tractors with multiple OEM remotes, utilize existing studs and hardware. Place a M10 and (2) M8 flat washers between the bulkhead bracket and the remote valve stack-cap.

Pressure, Power Beyond, and Case Drain Plumbing

Attach the hydraulic hoses:

Note: Hydraulic hoses are marked with colored zip ties that correspond to the diagram below.

• Power Beyond Hex - 1”
• Pressure Line Hex - 1 3/16”
  
  • Gray:       Pressure Line
  • Black:      Power Beyond Line
  • Orange:   Case Drain Line

Remote Valve Port and Hydraulic Coupler Plumbing

THEORY OF OPERATION: The remote valve included within the Steward™ kit is a 2-spool momentary on and off. The intended use of the spool A is for pull-type  implement raise and lower.  Spool B is for pull-type implement wing fold/unfold.

• Switch 1 is intended to control spool A, while Switch 2 is intended to control spool B.
• The following diagram illustrates switch positions, Valve Spool A/B and the corresponding hyd. coupler locations. 

Remote Valve Port and Hydraulic Coupler Plumbing (cont’d)

• The following images illustrate where to connect each hose.
• Each hose will have a colored zip tie on each end to help designate where to connect each fitting.
• Some tractors are unique, but we recommend routing the hoses along the RH side of the tractor’s transmission case. Secure the hoses together and away from the tractor's tires, while still allowing the tractor’s linkages to move freely.

Note: Hydraulic hoses are marked with colored zip ties that correspond to the following diagram

Attach Remote Valve Harness to the solenoids

Install the Rear Remote Valve Guard

• Attach the Rear Remote Valve Guard (B) to the bracket using the provided hardware, as shown.

Install and Connect Switch box - Cab

• Mount the switch box inside of the tractor cab.  It will attach to the autonomy switch box bracket

Routing of Sw. box harness - Cab and ROPS

• Route the gray colored harness lead with the 6-pin Deutsch connector, coming out of the remove valve switch box, towards the front of the RH console and then push it through the hole in the cab floor.  Connect it to the 6-socket Deutch connector on the main vehicle harness.

Adding 2-cavity connector to Sw. box harness and connecting to vehicle harness - Cab and ROPS

Reference Images