COUPLING GOOSENECK TO PRIME MOVER AND RAISING TRAILER (Continued).
A reading of 2500 psi is only on gauge (1) when hydraulic controls are in
use. Readings will drop to 500 psi when levers are disengaged.
The psi will vary due to load. Hydraulic pressures will vary from 300 to 2500
psi under normal operation, and will reach a maximum of 2500 to 2800 psi
under full load.
If the gooseneck height is too low, connect the hydraulic lines from the prime
mover to the gooseneck (Ref. pg. 2-32, Steps 7 & 8), pressurize the system to a
minimum of 2500 psi (17237.5 kPa) on the gauge (1), and raise the gooseneck by
holding the platform lever (2) down as required until the kingpin and the bedplate
are approximately parallel. (Be sure the gooseneck shim is positioned so as not
to obstruct movement of the gooseneck base assembly. Ref. pg. 2-32, Item 10.)
If the gooseneck kingpin is too high, lower the gooseneck by moving the platform
lever (2) to the up position until the gooseneck drops to the disired height.
Hydraulic pressure is not required to lower the gooseneck since the weight of
the gooseneck will allow it to drop under these conditions.
Check that the gooseneck tilt arm is fully raised to clear the prime mover bedplate and
position it as required with the gooseneck support lever (3). Ref. pg. 2-32, Item 10.