Kalmar DRF420-60S5, Maintenance Manual

Page: 189 / 600

UDRF01.04GB
Maintenance manual DRF 400–450
7 Load handling – 7.9 Load carrying 41
7.9 Load carrier
page –
Load carrier, description
Load carrier refers to holding on to any load. There are several ways
to hold loads.
• Twistlocks, rotation lift pins that hold the load in oval holes in
the corners of the load.
Used separately on top lift attachment, in combination with lift
legs, combi attachment.
• Lift legs, hold the load with legs that grab around and under the
load.
Lift legs are used in combination with twistlock on combi attach-
ment or separately, bottom lift.
7.9.1 Twistlocks
page –
Twistlocks, function description
The container is held to the attachment with four twistlocks.
Twistlocks are controlled with the control lever and Switch twist-
locks. One section in Control valve attachment pressurizes two hy-
draulic cylinders connected in parallel, one in each spreader boom.
Each hydraulic cylinder affects a linkage that turns two twistlocks.
Four position sensors, two in each spreader boom, sense the posi-
tion of the linkage and indicates if twistlocks are open or locked. In-
dicator lights on the boom and in the cab shows status for
twistlocks.
Four position sensors, one at each twistlock, indicate when the at-
tachment is aligned with the container. This is used to control when
twistlocks can be activated. An indicator light on the boom and one
in the cab indicate when the attachment has full alignment. An event
menu shows the twistlocks with alignment (1 - 4). To activate twist-
locks, alignment is required at all four twistlocks.
004868
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