Atles 906 – 09.2004 – GB
C1.7
GPA 30 drive pinion
General
The helical drive pinion is supported by 2 tapered
bearings mounted opposite each other. The bearing
cone (2) is press-fitted onto the drive pinion and the
cups (3) and (9) are also press-fitted into the intermediate
housing and the bearing (5) respectively. The bearing
cone (10), free on the drive pinion, enables the shims (8)
to be fitted for packing purposes. The drive pinion
supporting the 4-wheel drive driving gear is located in the
intermediate housing. Its position is adjusted by means of
one or more shims (6) placed between the bearing (5) and
the housing. The bearings are preloaded by means of one
or more shims (8) fitted between the bearing cone (10)
and the thrust washer (7).
Exploded view
342hsm16
Fig. 8
Nomenclature
1 Drive pinion.
2 Bearing cone.
3 Bearing cup.
4 Screw.
5 Bearing.
6 Shims.
7 Thrust washer.
8 Shims.
9 Bearing cup.
10 Bearing cone.
11 Nut.
7
6
5
4
3
2
1
8
9
10
11
C1.8
Atles 906 – 09.2004 – GB
GPA 30 drive pinion
Removal/refitting
Uncouple the tractor between the gearbox and the
intermediate housing (12) as follows:
– Refer to Chapter "H" for partial cab removal.
Operations 1 to 7.
– Drain the transmission system.
– Remove the reservoir(s) and disconnect the pipes,
hoses and wiring harnesses interfering with the
uncoupling operation.
– Make the tractor safe with stands and trolleys.
– Chock the tilt between the front axle and the cradle.
– Release the ratchet of the "Park Lock" transmission
lock.
– Mark the position and extract the sleeve between the
drive pinion and the lower shaft.
– Remove the bearing/hydraulic pump driving gear
assembly.
– Disconnect the handbrake mechanism control shaft.
– Free and secure the nut (11) with spanner
n° 60 05 006 310.
– Fit special socket n° 60 05 006 311 to the end of the
drive pinion and turn in a clockwise direction (Fig. 10).
– Remove the bearing cone (10), shims (8) and thrust
washer (7).
342hsm17
Fig. 9
342hsm18
Fig. 10
342hsm19
Fig. 11
12
60