Ford 1998 Windstar Owner's Manual page 149

To install the second row bucket seats:
Lift the seat assemblies into the vehicle.
1.
Locate front hooks on front pins and drop rear hooks over
2.
rear pins with enough force to cause the hooks at the rear to
engage and hook on to the pins in the floor wells.
Ensure that the latch handles are fully seated in the down
3.
position.
Check to see that the seat and seatback are latched
securely in position. Keep floor area free of objects that
would prevent proper seat engagement. Never attempt to
adjust the seat while the vehicle is in motion.
Two and Three Passenger Bench Seat Assemblies
NOTE: It is easiest to remove/reinstall both the second and
third row bench seats through the sliding door. Also,
remove any floor mats (if equipped) in the rear
seating compartments before seat removal.
To remove seat assembly:
(For second row bench seat only) Disengage the tongue
1.
portion of the lap/shoulder belt from the detachable anchor
assembly by inserting a key or small screwdriver into the
slot provided on the detachable anchor (see Figure 1). When
this shoulder belt assembly is free of the seat, allow the
retractor to wind up the slack in the belt.
Seating and Safety Restraints
RWARNING
149