MASSEY FERGUSON 5400 - Page 178

Massey Ferguson 5400 - Issue 1.a
05F01.20
GBA20 selector rails with mechanical reverse shuttle
Adjusting the the Hare / Tortoise fork stop
Principle
locking is adjusted by an adjustable stop (18) located
on the Hare / Tortoise fork. This adjustment is obtained
using a tool (see § F) whose role consists of conveying
to the stop the positioning of the indexing pin,
mounted on the selector cover.
The aim of this adjustment is to provide safety to the
Hare / Tortoise mechanism, during operation, by
mechanically immobilising the fork in the Hare or
Tortoise position.
I
MPORTANT: Before adjusting the stop (18), it is essen-
tial to adjust the clearance between the Hare / Tortoise
fork pads and the synchromesh sliding coupler.
On the cover (Fig. 25)
78. Place the indexing pin (35) in the high range (Hare).
79. Engage 3rd gear.
80. Place the tool on the selector cover (Fig. 23).
81. It is essential to equally share the clearance
between the indexing pin and the plunger (31)
(Fig. 25, detail A).
82. Using the tool, measure dimension X according to
Fig. 23 and Fig. 25.
On the gearbox (Fig. 25)
83. Engage 3rd gear. Using the tool, set dimension X
to the gearbox.
84. Apply manual pressure on the fork towards the
Hare range.
85. Adjust the stop (18) (Fig. 24 - Fig. 25) by placing it
in contact with the tool.
86. Lightly smear the thread of the screw (17) with
Loctite 242 or equivalent. Tighten to a torque of
40 - 50 Nm.
X
L
MA-05-00465B
B
35
Fig. 23
MA-05-00466B
18
17
X
L
Fig. 24