8999153EN: v1.0 18/12/2020
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Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
Remove the oil level plug on the side of the gearbox, and ensure the oil is filled up to that level; see
Figure 6.4 (2).
To top up the gearbox oil level, remove the oil filler plug and carefully top up with oil until the oil starts
to flow from the level plug; see Figure 6.4 (1).
Use only the recommended grade of oil.
For further information refer to ‘Recommended Lubricants’, Section 6.13.
6.6.3
Outer Gearbox Oil Drain And Refill
To drain the oil from the gearbox, it is necessary to remove the gearbox from the machine.
Remove both the oil filler and level plugs; see Figure 6.4 and then invert the gearbox over a suitable
container and allow the oil to drain.
Dispose of the used oil and protect yourself against it in accordance with the guidelines set out in
Section 6.2.
6.6.4
Outer Gearbox Removal
Figure 6.5
ITEM NO.
DESCRIPTION.
1
Top Cover
2
RH Outer Gearbox
3
Short Driveshaft Clamping Bolt
4
Flexible Coupling
5
Long Driveshaft
6
Central Gearbox
7
LH Outer Gearbox
Remove the six flexible coupling mounting bolts (4).
Remove the relevant short driveshaft clamping bolt (3).
Slide the long driveshaft (5) towards the central gearbox (6).
Slide the short driveshaft (3) towards the relevant outer gearbox (2) (7).
Remove the flexible coupling (4) and both driveshaft’s (3) (5) and store them safely.
Lift and support the machine on safety supports.
With assistance, support the blade carrier, remove the split pin and rotor castle nut and remove the
rotor from the splined gearbox output shaft. Refer to Figure 6.10.
With assistance, remove the four nuts and mounting bolts securing the gearbox to the machine.
Remove the gearbox (2) (7).
Replacement is the reverse of removal, but tighten the mounting bolts and castle nut as specified in
‘Specific Torque Settings’; Section 6.14.
WARNING!
Ensure that the blade carriers and blades are at 90° to each other after removing or
replacing drive couplings and/or rotor hubs.
