COUPLING GOOSENECK TO TOWING VEHICLE AND RAISING SEMITRAILER - Continued
A reading of 900 psi (6,205.3 kPa) is only on gage (Figure 5, Item 1) when
hydraulic controls are in use. Readings will drop to 500 psi (3,447.4 kPa) when
The psi will vary due to load. Hydraulic pressures will vary from 300-900 psi
(2,068.4-6,205.3 kPa) under normal operation, and will reach a maximum of
900-1,100 psi (6,205.3-7,584.2 kPa) under full load.
Be sure the level for hydraulic fluid in the reservoir of the towing vehicle is above
the minimum level to avoid getting air in the hydraulic lines.
If the gooseneck height is too low:
Connect hydraulic lines from towing vehicle to the gooseneck.
Pressurize system to a minimum of 900 psi (6,205.3 kPa) on pressure gage (Figure 5, Item 1) and
raise gooseneck by holding platform lever (Figure 5, Item 3) up as required until kingpin and bedplate
are approximately parallel.
Be sure the gooseneck shim is positioned so as not to obstruct movement of the
gooseneck base assembly.
Hydraulic pressure is not required to lower the gooseneck since the weight of the
gooseneck will allow it to drop under these conditions.
If gooseneck height is too high, lower gooseneck by moving platform lever (Figure 5, Item 3) to down
position until gooseneck drops to desired height.
Ensure gooseneck tilt arm is fully raised to clear towing vehicle bedplate and position it as required with
gooseneck support lever (Figure 5, Items 2 and 4).