Princeton PIGGY BACK PB50 Operator's Manual page 28

5 Operation
DOUBLE REACH (Optional)
The first stage of reach is the standard moving mast and the second stage of
the reach is a scissor mechanism.
This option has been ordered by the owner of the PIGGY BACK Delivery
System for the following uses.
1) It allows a 4000 lb.* load on a truck or trailer to be unloaded from one side.
2) It allows a 2500 lb.* load to be placed in an area with low overhead clearance.
3) It allows a 2500 lb.* load to be placed across a small open area.
GENERAL
It is recommended that the scissor is only operated as a second stage reach. This
means that it is the last reach extended and the first retracted when utilizing the double
reach feature. The unit has two extend levers the tall one operates the mast movement,
the short one operates the scissor (FIG 3). The utilization of the scissor reach for unload-
ing may require a spotter to watch the other side of the truck or trailer for pedestrian or
vehicle traffic.
FREE LIFTING (LOAD FULLY EXTENDED)
The rated capacity for this option is 2500 lbs. when the unit is free standing, with stabiliz-
ers down, on reasonably firm terrain. This means that a 2500 lb. load that is 48" wide
can be fully extended out when the stabilizers are engaged. This would be a typical low
overhead clearance or an across open area drop.
ty will result in a forward tip.
ONE SIDE TRUCK UNLOADING
When unloading from one side of the truck you can get a lift capacity of up to 4000 lbs.
This is achieved by placing the mast of the unit up against the truck or trailer. There are
special bars welded to the mast (FIG 4) that allows free operation of the mast when the
unit is against the truck. To unload the truck or trailer, you will 1) drive up to it while rais-
ing your forks, 2) engage your stabilizers, 3) extend your mast until it contacts the truck
or trailer, 4) extended your scissor reach, 5) lift your load 1" to 2"(FIG 5), 6) fully retract
your scissor reach, 7) fully retract your mast, 8) raise your stabilizers, 9) back away from
the truck or trailer and lower your load to the carrying height.
Rub Bar
FIG 3
Scissor Mast
FIG 4
Control Control
27
(See restrictions below)
WARNING: Exceeding this capaci-
1" to 2"
Contact
FIG 5
The Load Arm Option is used
when the forklift is carrying long
loads such as lumber, drywall,
and other building materials.
LOWERING ARMS
To lower the Load Arms into oper-
ating position, pull the spring pin
out of the hole on mounting hook
and lower the arm onto the front
support. Make sure pin end is
below the load surface or dim-
pling of load arm and load will
occur.
RAISING ARMS
To raise Load Arms, lift the arm
until spring pin snaps into detent
hole on mounting hook.
MOUNTING
Load Arms are to be in the raised
position when the forklift is
mounted on an EASY HITCH
Mounting. Safety chains will run
through the holes in the Load
Arms.
5 Operation
LOAD ARMS (Optional)
28