General - MASSEY FERGUSON 5400 Service Manual

GBA20 selector rails with mechanical reverse shuttle
A . General
On the gearbox
The selector rail (7) holding the different forks is
located on the right-hand side of the gearbox, on the
selector cover side (Fig.
gearbox housing and the control piston of the Hare /
Tortoise range (13).
It is held in position by a set screw (8). A cup plug (9)
closes off the bore at the front and a cover (15) closes
the rear end.
The 1st - 2nd (5) and 3rd - 4th (6) forks are not adjust-
able.
The creeper fork (28) is adjustable by mechanical pres-
sure.
Two adjustments are necessary to obtain the correct
functioning of the fork (20) in both ranges (Hare /
Tortoise):
- adjustment of the space between the fork pads and
the synchromesh sliding coupler;
- adjustment of the stop (18), in relation to the position
of the indexing pin mounted on the selector cover.
An optional creeper unit may be fitted (see
chapter 5).
An optional super-creeper unit may also be fitted (see
chapter 5). In this case, the locating pin (29) is not
fitted.
On the input unit (Fig.
The mechanical reverse shuttle synchromesh is
controlled by:
- a selector;
- a selector rail;
- a fork.
The selector and fork are non-adjustable.
Massey Ferguson 5400 - Issue 1.a
1). It passes through the
Fig. 1
1)
and
Fig. 1
05F01.3