8999145EN: v1 26/02/2020
22
Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
3.6
Setting Arm Configurations
3.6.1
Manual Shift Operation - Fixed Arm
– Twiga Carrier CF20
In order to move the fixed arm variant between cutting and transport positions, a spanner or socket set
with extension will be required.
Raise the prime mover hydraulics so that the Twiga Carrier is at a comfortable height to work on.
Loosen the lock nuts on the back of the u-bolts 3 or 4 turns. Take care to not fully remove them as the
arm may fall forwards.
Once the u-bolts have been loosened, the box section can be pulled through to extend the reach
sideways. Take care not to pull the box all the way through the u-bolts, as it may drop off from the DIN
plate completely. Ensure that the hydraulic hoses do not snag on the steel work as the arm is being
moved, otherwise they may be damaged.
Once the user is happy with the position of the head, re-tighten the lock nuts to 120 Nm
When transporting the Twiga Carrier, the process is a reversal of the extension
– loosen locknuts, push the arm
back in to its stop, re-tighten locknuts.
3.6.2
Manual Transport / Working Position Operation
– Folding Arm - Twiga Carrier
CF30
Starting with the arm in its folded transport position (Figure 3.6.2.1), the process to prepare it for work
is as follows:
Park up with the Twiga Carrier and prime mover on level ground, and the arm presented to the user at
a comfortable height to work on.
Remove the stowage pin by first removing the circlip from the bottom of the pin, then withdrawing the
pin fully (Figure 3.6.2.3)
Figure 3.6.2.1
– Transport Position
Figure 3.6.2.3
– Pin Removal
Pull the arm around to the side, being careful that the arm does not swing out under its own weight.
Once the two box sections are in line, the breakout ram should be guided into the clevis on the back of
the moving arm. Once the ram rod is in the clevis, insert the stowage pin that was removed in point (2)
above, and secure it with the circlip. (Figure 3.6.2.5)