CARR 301811 HD 18” Tube Step - Manual (Page 3)

HD 18” Tube Step Installation Instructions
Part No’s: 301800 / 301801 / 301810 / 301811
For Diagrams: F / G
1. Place the black mounting castings in the open ends of the tube. Line up the holes and securely fasten the
castings to the tube with hardware provided. See uppper portion of Detail B.
2. DIAGRAM’S F, G: These steps mount to an extremely strong part of your vehicle, the back side of its rocker
panels. For the proper position of the step, the front edge of the seat while in normal driving position should be
in line with the center of the step. For personal preference or to avoid any obstruction that may be on the
backside of the rocker panel, the step can be moved towards the front or the rear of the vehicle. Diagram G: Be
sure to avoid the holes covered with patch material where you will be drilling the top holes later. Also, avoid
placing the edge of the steel mounting brackets in the grooved areas of the inner rocker panel.
3. Assemble the steel mounting brackets to the step as shown in the drawing, but only hand tighten.
4. When positioning the assembled step against the back side of the rocker panel, be sure to avoid all bumps and
screws to ensure that the step is against a flat surface. Take a pencil and mark a vertical line that lines up with
the front edge of the seat, on the outside painted surface of the pinch weld. (See diagram). Disassemble the
brackets from the step.
5. Measure 8” on each side of the marked vertical line and mark two more lines on that same surface. The
dimension between the two outside marked lines should be 16”.
6. Measure 3/8” from the edge of the pinch weld where you marked the other vertical lines and mark two
horizontal lines, creating a cross hair. NOTE: DOUBLE CHECK DIMENSIONS BEFORE DRILLING!
(Warning: when drilling holes leave at least 1/8” of metal between the hole and the edge of the pinch weld).
7. Take a center punch and punch the center where the two sets of lines cross.
8. Take a 1/8" drill bit and drill out the centered punched holes. DIAGRAM G SEE DETAIL A: IMPORTANT
NOTE A: You must drill the 1/8" hole up against the bend as close as possible. If not, the drill will wander and
break through the bottom edge of the pinch weld.
9. Enlarge the 1/8” hole with a 5/16” drill bit.
10. After drilling, make sure that all the burrs are removed.
11. Remove the steel brackets from the step casting.
12. Place the steel brackets back on the vehicle where the two holes were drilled. DIAGRAMS F & G: Be sure to
install the tubes.
13. DIAGRAM G: uses the 5/16" x 1 ¾” bolts, no washers under head of bolts. DIAGRAM F: uses the 5/16” x 1
¾” using the washers under the head of the bolts) with the 5/16" hex nuts and 5/16" washers to securely tighten
the brackets to the vehicle. DIAGRAM F: hand tighten the 5/16” hardware because you will need to move the
top of each bracket back to insert the wedge washers in the next step.
14. Place the step back into the steel brackets with the 1/4" hardware provided and securely tighten, making sure
that the proper hole selection has been made.
15. DIAGRAMS G: Using the 1/4" holes at the top of each steel mounting bracket, take a 1/8" drill bit and drill
holes into the body metal. Drilling at an angle may be necessary due to interference or for proper alignment.
Take the 1" sheet metal screws for diagram G and securely tighten. DIAGRAM F: Place the wedge washer at
the top of each bracket. Push the wedge washers down far enough to level the step. Hold the wedge washers in
place and take a pencil and mark the holes through the ¼” holes in the steel mounting bracket. Take the wedge
washers out and drill out the marked holes with a ¼’ drill. Re-install the wedge washers and use the 1” sheet
metal screw to securely tighten the bracket and wedge washer against the vehicles body metal.
16. We advise putting silicone sealer around the areas where the zinc plated mounting brackets come in contact
with the body metal.
17. After one month of use, go back and give all hardware a final tightening.
MATERIALS NEEDED: Drill Motor, 5/16” drill bit, ¼” drill bit, 1/8” drill bit, pencil, Phillips screw driver, center
punch, two ½” wrenches, two 7/16” wrenches and silicone.
MATERIAL FURNISHED:
Two 18” tubes, four black mounting castings, four steel mounting brackets, two black plastic
tread plates, instruction page and two hardware packs (Important! Not all of the parts in these hardware packs may be
needed for proper installation).