7.5. Emergency operation of the boom extension
In the event of a failure in the electric system or proportional valve, it’s necessary to retract the
boom extension manually. To be able to retract boom extension follow these steps:
1. Loose locknut (1) which counter the screw
(2). Use a wrench 13mm (3).
2. Start tightening slowly the screw (2) with
the Allen key - 4mm (4) until the boom
extension is fully retracted. Check the
pictures.
WARNING
Be careful with tightening
the screw (2). Avoid fully
tightening the screw (2) as it
might be fall the screw into
the housing (5).
1
3
2
5
4
3. After retracting the boom extension, untighten the screw (2) to the starting position. Check
that the distance to the top of the screw is the same as in the picture below. It should be
3.19in/81mm.
8
1 m
m
/3
.1
9 i
n
1
2
3
2
1
3
81 mm/3.19 in
11 ft Ib
15 Nm
4. Tighten locknut (1) to torque 11 ft Ib/15 Nm.
5. Operate the loader into parking position.
WARNING
Operate the loader with the utmost care. This emergency operation is only
allowed to operate the loader to transport position. All other actions are strictly
forbidden! The loader may only be taken back in use once the damage has
been repaired by an HIAB authorized service workshop.
Ending loader operation
HIAB J14S J24S
43
