Warren Elevating 5
th
Wheel
19
Figure 6 Cross member and cylinder clearance.
There must be at least 1/4 Inch clearance between any cylinder and cross member when the unit
is in down position.
NOTE: On all models, cylinders come closest to cross members when the unit is in down
position. Actual contact, or less than 1/4 inch clearance will require alteration of the cross
member.
On any tractor with an air suspension,
BE SURE
to drain all air from the air suspension before
making these marks.
BE SURE
that all air is out of the air bags during the entire measuring
procedure. If the air bags refill during measuring, your measurements will be wrong. If you do
not measure and check the cross members properly, the cylinder may hit the cross members or
other parts later.
Check for Actual Contact
When the 5
th
wheel is in the exact position where you want to install it, check for interference
from any cross members or other components. Remember that the suspension (whether spring or
air type) will move as the tractor is driven over rough surfaces. You must have adequate
clearance between the lifting fifth wheel and all tractor components. You should also keep in
mind that hydraulic hoses and fittings will be installed on each end of the hydraulic cylinder(s).
While checking for clearance, drain all air from air suspension components. Be sure that air is
drained during the entire checking procedure.
NOTE: If the 5
th
wheel frame fits flush on the tractor frame rails. Check any gap between the two
frames may be caused by a cylinder resting on a cross member. Check each cross member
Tractor Frame
Tractor Cross Member
5
th
Wheel Frame
Cylinder
Need min. ¼ inch
clearance.
Reinforce tractor
cross member if
cut.
A
B
C