Massey Ferguson 5400 - Issue 1.a
06F01.11
GPA20 hitch / Linkage
62. Refit the 4 screws to the spool valve support after
smearing their thread with Loctite 510. Tighten the
screws to a torque of 50 - 70 Nm.
63. Refit the parts that were removed at operation 1.
64. Adjust the PTO control (4-speed) (see section 7).
65. Smear the thread of the position sensor (26) with a
sealing compound (Hylomar or equivalent), then
screw the sensor in a few turns.
66. Start the engine.
67. Using the external controls, ensure that the lift
arms are in raised position (continuous pumping).
Stop the engine.
68. Screw in the sensor (without forcing it) up against
the cam (9). Connect the sensor to the female
connector using a locally made harness (Fig. 15).
Connect the other test harness connector to the
tractor harness. Connect terminals 1 and 2 to a
multimeter.
Start the engine.
Lower the hitch by 3 to 5 cm between the hook
and ground.
Unscrew the sensor to obtain a voltage between
6.92 and 6.96 volts.
Reconnect the tractor harness.
Stop the engine.
69. Tighten the nut (25) to a torque of 25 Nm using a
locally made wrench (Fig. 16).
70. Check for tightness of:
- the mating faces of the lift cover and the spool
valve support,
- the hydraulic unions.
Version without lift
• The ports of the shaft (4) are plugged with cup plugs
(27) sealed with Loctite 542.
• The position sensor (26) is replaced with a threaded
plug fitted with a sealing ring (29).
Fig. 15
1 : Ground
2 : Signal
3 : Sensor power supply 9.5 V
Fig. 16
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