probst UMG-60/150 Instructions D'emploi page 35

Installation
4.1.4 Fork sleeves (optional)
To establish a mechanical connection between the fork lift truck and the fork sleeves you have to put the
forks into the fork sleeves and fix it with the locking bolt or with a chain/rope, connected to the eyelet on the
fork sleeves and the lift frame.
It is definitely necessary to establish this connection. Otherwise the device could slide form the forks.
DANGER OF ACCIDENTS!
1
2 locking bolt
3 Fork sleeve
4 Chain/rope
57200050
Fork (of fork lift truck)
11 / 18 GB