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Massey Ferguson 6465, 6480, 6485 - Rear axle
MF 6465, 6480, 6485, 6490 tractor rear axle comprises four housings: the
centre housing. On the inside, it supports: the rear differential
assembly and ring gear; the pinion; the PTO clutch.
On MF 6465, 6480 tractors equipped with GTA1540 transmission, the sensor
located at the top of the centre housing, towards the front, measures
the engine speed at the PTO clutch input - the 4WD clutch; the hand
brake control mechanism; the annular pistons and main brake discs.
On MF 6485, 6490 tractors equipped with GTA1540 transmission (50 kph),
the braking surface of the annular pistons and brake discs is optimised.
A mechanical device controls the return of the annular pistons and
cancels out any play resulting from the friction of the discs on the
annular pistons when braking; the Park Lock device (depending on
option); the creeper unit control mechanism (optional). On the outside,
it supports: the right and left-hand hydraulic cover plates; the
supports fitted to the upper part of the centre housing holding the
support and linkage arms.
On tractors equipped with GTA1540 transmission, the centre housing is
reinforced where the linkage support and rear PTO housing are attached.
This is the case regardless of the tractor speed (40 or 50 kph). PTO
housing supports: all variants of the PTO transmission; the PTO brake.
The right and left-hand trumpet housings - These are fitted to either
side of the centre housing and house the rear wheel drive system.
On tractors equipped with GTA1540 transmission, the number of tapped
holes used to attach the trumpet housing to the centre housing differs
according to the type of trumpet housing: Normal Duty and Heavy Duty
trumpet housings: 9 tapped holes; sealed Heavy Duty trumpet housings: 15
tapped holes; trumpet housings with composite final drive: 15 tapped
holes.
The trumpet housings are sealed by special seals located: for Heavy Duty
and sealed Heavy Duty trumpet housings: in the trumpet housings and
between the trumpet housings and centre housing; for Normal Duty trumpet
housings: between the trumpet housings and centre housing; for trumpet
housings with a composite final drive: between the trumpet housings and
centre housing.
Layout of the main components
Massey Ferguson 6465, 6480, 6485 - 2-speed PTO
version
MF 6465, 6480 Tractors fitted with GTA1040 transmission (Parts
list) - (1) Lubrication pipes (PTO clutch, hand brake discs,
PTO transmission and 4WD clutch) (2) Centre housing (3) PTO housing (4)
Crown wheel and pinion and rear differential (5) Hand brake mechanism
(6) Creeper unit control mechanism (depending on option) (7) PTO clutch
(8) 540-1000 rpm driven gears (9) 4WD clutch (10) Park Lock device
(depending on option) (12) Interchangeable end fitting (13) 540-1000 rpm
driving gears
MF 6485, 6490 Tractors fitted with GTA1540 transmission (Parts
list) - (1) Lubrication pipes (PTO clutch, hand brake discs,
PTO transmission and 4WD clutch) (2) Centre housing (3) PTO housing (4)
Crownwheel and pinion and rear differential (5) Hand brake mechanism (6)
Creeper unit control mechanism (depending on option) (7) PTO clutch (8)
540-1000 rpm driven gears (9) 4WD clutch (10) Park Lock device
(depending on option) (12) Interchangeable end fitting (13) 540-1000 rpm
driving gears
Massey Ferguson 6465, 6480, 6485 - 3-speed PTO
version
MF 6465, 6480 Tractors fitted with GTA1040 transmission (Parts
list) - (1) Lubrication pipes (PTO clutch, hand brake discs,
PTO transmission and 4WD clutch) (2) Centre housing (3) PTO housing (4)
Crown wheel and pinion and rear differential (5) Hand brake mechanism
(6) Creeper unit control mechanism (depending on option). (7) PTO clutch
(8) 540 E driven gear (9) 4WD clutch (10) Park Lock device (depending on
option) (12) Interchangeable end fitting (13) 540 E driving gear
MF 6485, 6490 Tractors fitted with GTA1540 transmission (Parts
list) - (1) Lubrication pipes (PTO clutch, hand brake discs,
PTO transmission and 4WD clutch) (2) Centre housing (3) PTO housing (4)
Crownwheel and pinion and rear differential (5) Hand brake mechanism (6)
Creeper unit control mechanism (depending on option). (7) PTO clutch (8)
540 E driven gear (9) 4WD clutch (10) Park Lock device (depending on
option) (12) Interchangeable end fitting (13) 540 E driving gear
Massey Ferguson 6465, 6480, 6485 - Ground Speed PTO version
MF 6465, 6480 Tractors fitted with GTA1040 transmission (Parts list) -
(1) Lubrication pipes (PTO clutch, hand brake discs, PTO transmission
and 4WD clutch) (2) Centre housing (3) PTO housing (4) Crown wheel and
pinion and rear differential (5) Hand brake mechanism (6) Creeper unit
control mechanism (depending on option). (7) PTO clutch (9) 4WD clutch
(10) Park Lock device (depending on option) (11) Ground Speed PTO (depending on
option) (12) Interchangeable end fitting
MF 6485, 6490 Tractors fitted with GTA1540 transmission (Parts list) -
(1) Lubrication pipes (PTO clutch, hand brake discs, PTO transmission
and 4WD clutch) (2) Centre housing (3) PTO housing (4) Crownwheel and
pinion and rear differential (5) Hand brake mechanism (6) Creeper unit
control mechanism (depending on option) (7) PTO clutch (9) 4WD clutch
(10) Park Lock device (depending on option) (11) Ground Speed PTO (40 kph only)
(12) Interchangeable end fitting.
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MF TRACTORS SPECIFICATIONS |
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MF FRONT END LOADERS |
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MF TRACTORS MAINTENANCE |
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MF TRACTORS TROUBLESHOOTING | ||||
1652 | 1749 | 2620 | 2725 | 2805 |
3050 | 3120 | 3640 | 3709 | 4245 |
4455 | 5320 | 5455 | 5613 | 6150 |
6280 | 6480 | 6615 | 7618 | 7720 |