CLAAS
AXION 840-810 CMATIC
Tractor (Type A31)
Service Repair Manual
D1.8
Axion 850-810 – 10.2010 – GB
General
Removing the front axle
Warning: The front axle must be raised on stands at
the same time as the rear axle if the current operation
requires the engine to be started up as the front axle
remains engaged when stationary. There is therefore
a risk of the tractor moving.
The tractor must be immobilised on flat, level ground (in
the case of front lifting, raise the arms to maximum
height).
– Apply the handbrake.
– Disconnect the battery.
– Chock the rear wheels.
– Shim the front axle to prevent it from swivelling.
– Remove the housing and drive shaft.
– Remove the front wheels.
– Chock the tractor under the crankcase with stands
(shim it as high as possible to facilitate the axle's
passage forward).
– Remove the angular sensor bracket (3 screws).
– Disconnect the hose couplings from the steering
cylinder.
– Disconnect the hydraulic unit hoses on the left side.
– Disconnect the harnesses of the hydraulic unit solenoid
valves on the left side.
– Remove the closing panel in the hood nose.
– Remove the radiator nozzle and the fan by loosening
the central nut (Left-hand thread).
– Position an appropriate device.
– Set into tension.
– Remove the 8 screws (A) of the bearings.
– Remove the front axle.
When changing the axle, check the oil levels.
According to the intervention on the front axle: drain the
axle when removing.
455hsm84
Fig. 7
455hsm82
Fig. 8
455hsm83
Fig. 9
A
A
Axion 850-810 – 10.2010 – GB
D1.9
General
Refitting the front axle
– Sling the front axle using an appropriate means.
– Place the front axle as to engage the fastening screws
(A).
– Pre-tighten the fastening screws (A) on the front axle
at 13 daN·m, then tighten to 30 daN·m.
– Refit the parts removed previously.
– Connect the hoses and the electric cables.
– Refit the wheels.
– Remove the props.
– Top up the levels.
455hsm85
Fig. 10
D1.10
Axion 850-810 – 10.2010 – GB
Epicycloid reducer
Exploded view of