JLG 1250AJP Service Manual - Manual (Page 312)

SECTION 4 - BOOM & PLATFORM
4-72 – JLG Lift – 3121171
25. Disconnect the wiring harness from the strain relief
connector at the opposite side of the load sensing
pin.
26. Use the Load Pin Removal Tool (JLG P/N 4846765)
to prevent the pin from being damaged, and use a
hammer to remove the pin. To make the tool refer to
Figure 4-49., Load Pin Removal Tool, JLG P/N
4846765. If the Load Pin Removal Tool is not avail-
able, use an arbor of the proper size (as shown
below). If excessive force is necessary to move the
pin, it may be necessary to carefully activate lift
using the auxiliary power switch to relieve lift cylin-
der weight from the load sensing pin.
27. After both retaining pins have been removed, care-
fully remove the lift cylinder, repositioning the lifting
strap as necessary.
Installation
NOTE: The tower lift cylinder weighs approximately 644 lbs.
(292 kg).
1. Put a nylon strap capable of supporting the weight
of the lift cylinder around the cylinder. Carefully posi-
tion the lift cylinder in place, repositioning the lifting
strap as necessary.
2. When installing a new load sensing pin, make sure
all of the holes in the turntable and lift cylinder are
aligned. If the new load sensing pin does not push
1/2 to 3/4 of the way in by hand, remove the pin and
align the holes better. Also make sure the pin is
installed with the strain relief connector opposing
the pin orientation bar as shown.
3. Using a wooden block, carefully tap the pin until it is
fully installed. Secure the pin in place with the retain-
ing pin and retaining pin bolt.
DO NOT TAP ON THE CENTER OF THE PIVOT PIN.
4. Connect the wiring harness to the strain relief con-
nector as shown in Figure 4-48., Load Sensing Pin
Harness Installation and re-calibrate the boom sen-
sors.