Simpson SEAT BELT - Manual (Page 4)

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The 5 Point Belt should be mounted directly off the chest line. (see Figure 2) The chest line is found by making a
straight line off the chest of the driver, through the buckle. Where the chest line intersects the seat, is where the 5
point should be mounted or have an effective anchorage point.
The 6 Point Mounts are located 3.5” to 4.5” in back of the 5 point mount and at an 8 to 12 inch separation. (4” to
6” off the driver’s center line) (see Figure 2) The webbing should come off the anchor at this point. The 6 points
should be centered under the driver’s legs when in a normal seating position and be just in back of the front of the
pelvis. In a seat belt system that only uses the 6 points and not the 5 point, the vertical buckle location is
determined by the 6 points. They should be tensioned so that they apply mild pressure to the insides of the legs.
The shoulder belts are used to set the final tension on the 6 points and vertical buckle location.
Most issues with belt system tension or buckle walk can be solved by adjusting the 6
points tighter.
7-Point Seat Belts. A 7-Point belt system is simply the use of the 5 point belt in conjunction with the 6 point
belts. Follow the mounting instructions for both of these systems. The 5 point belt now becomes the primary belt
for holding the vertical position on the lap belt buckle. The 6 points then need to be tensioned as previously
explained.
The 7 point configuration is extremely stable. It has shown to be very important in keeping control of the
pelvis in major impacts and in normal driving. Simpson highly recommends the use of 7 point systems.
Seat Belt System Care: Your seatbelt system should be treated delicately. It must be covered or removed when
welding near the belts. Seat belt material is polyester and will melt when exposed to a high temperature heat
source. Always protect the belts from high temperature heat sources.
Wash with small amounts of a mild detergent mixed in a bucket of water. Never use a power washer or directly
spray the belts.
Mounting of Restraints to the vehicle: The mounting of your belt system is extremely important to the function
of the product. There are a number of mounting types that are acceptable. Some general rules to follow when
placing mounts in the car are:
1) Always mount the anchors in the direction of pull when in use.
2) If a wrap around mount is used, make sure that there are stops on both sides of the belt to stop the belt from
moving side to side in an accident.
3) Use grade 5 of better hardware to bolt in your seat belt system. Mount all hardware outside the seat system
where possible.
4) Make sure that the locking adjusters are as close to the anchor as possible and that the anchors have been
properly lock to insure the ability to take load.
5) Keep the belt routing clear of obstruction and if the belt needs to go over an edge, take care to insure that the
belt will not fray or cut on anything on or near the belt.
6) Belts will move with you in a wreck, make sure that the belt motion will not make the belt come in contact with
a rough or sharp surface.