MASSEY FERGUSON 5400 - Page 362

Massey Ferguson 5400 - Issue 1.a
07A01.4
General - GPA20 operation
Lower shaftline
- The lower shaftline is supported at the front by a
bearing force fitted into the housing, and at the rear
by a bearing.
- The lower shaftline output shaft is lubricated at the
front bearing by a deflector and by radial bores in the
output shaft.
- Shaft tightness is ensured by a lip seal fitted firmly to
the rear cover of the housing.
- The PTO shaft type depends on the model:
• Removable PTO (Fig. 1): the shaft can be extracted
by removing a circlip. Two shafts are available; each
one corresponds to a different PTO speed (540/1000
rpm).
The splines of these shafts match with the splines of
the 540 and 1000 rpm pinions. Each shaft is driven
by the pinion that corresponds with its operating
speed.
• Shiftable PTO (Fig. 2): the 540 and 1000 rpm
pinions are idle-mounted on the PTO shaft. The
speed is selected using a coupler located between
the two pinions. Depending on the option, the shaft
can be a flange shaft (3) holding an end fitting with 6
or 21 splines, or a non-removable shaft (2)
comprising a number of fixed splines.
These criteria clearly change according to the imple-
ment to be fitted and the rotational speed to be used.
Power take-off brake
- The rear power take-off is equipped with a brake
located in the rear housing (see chapter 7).
Proportional PTO
- The GSPTO is driven by a shaft coupled to the front
axle clutch by a sliding sleeve. This shaft then drives
the 540 rpm pinion on the lower shaftline.
- The sleeve sliding on the splines secures the front
axle clutch shaft or allows it to rotate freely.
Fig. 1
Fig. 2