Owners manual

Sheet 3 of 31 50140N 1-23-15 Rev. G

11. Install the 1/2 in. x 2 in. long carriage bolt (11) in the center hole of the rear rail as show in Figure 1. Place a u-shaped spacer

(12) (above or below the bed depending on corrugation), and attach the bolt with a 1-1/2 in. x 2 in. block (16), 1/2 in. lock

washer (10), and hex nut (6) on the bottom.

12. Place the unassembled fifth wheel saddles/slider/goose into the already installed rear mounting rail. Position the second (front)

mounting rail with the saddles/slider/goose by inserting the tabs into the mounting rail and pushing the mounting rail tight

towards the other mounting rail. Ensure that the mounting rail is centered between the weld seams on the length of the truck box

floor. This will position the mounting rail in the correct location and ensure that the fifth wheel will have a snug fit to the truck.

NOTE: If more than one hitch product will be used with the rails, then both should be used at the same time to align the

second rail. This will ensure that one product does not compromise the fit of the other.

13. Repeat Steps 4 and 5 using the front frame brackets (1) (3). The bracket should be just rearward of the next bed support. Open

all five holes to 9/16”.

14. Paint all bare metal.

15. Loosely install the front frame brackets as follows:

a) Place the front brackets on the outside of the frame as shown in Figures 1 and 2. A portion of the frame brackets will be

under the bed support.

b) Install a u-bolt (5) on each of the brackets (1) (3). The u-bolt wraps around the inside of the frame. Loosely install 1/2

in. conical washers (7) and hex nuts (6) onto the ends of the u-bolts (5). NOTE: The u-bolt on the driver side must be

placed between the brake line and the frame. See Figure 2. Improper placement of the driver side u-bolt may

result in damage to the vehicle’s braking system. Move the electric wires out of the way.

16. Install the 1/2 in. x 2 in. long carriage bolts (11) and u-shaped spacers (12) in the front row of the rail as shown in Figure 1.

Place the u-shaped spacers between the rail and the bed (above or below depending on bed corrugation). To attach the carriage

bolts to the front frame brackets (1) (3), use 1/2 in. conical washers (7), 1/2 in. lock washers (10) and hex nuts (6). Insert the 2-

1/16 in. long tube spacers (15) between the bottom of the bed and the frame bracket (1) (3). Install 1/2 in. x 4 -1/2 in. bolts (13)

in the rear 2 holes. Use a 2 in. long bolt (11) in the center hole. Install the u-shaped spacers (12) between the rail and the bed

(above or below depending on bed corrugation). Install 1/2 in. conical washers (7), lock washers (10), and nuts (6) on the bolts

(13).

17. Tighten the fasteners in the following sequence: 1) torque the frame brackets to the truck frame, 2) reinsall the unassembled fifth

wheel saddles/slider/goose, 3) torque the mounting rails to the frame brackets and bed. Torque all 1/2 in.

Grade 5 hardware to 72 ft-lbs (98 N-m).

18. Reattach the wiring harness to the inside of the drivers side frame. Use the cable tie, if necessary.

19. Reinstall spare tire, and the exhaust if it was lowered in a previous step.

For 2010 - 2012 Gas Engine Models Only.

FIGURE 2A

20. Install brackets (2) and (4) in reverse positions. See Figure 2A.

21. Put rear left hand bracket (2) on the outside of the right rear frame rail and rear right hand bracket (4) on the outside of the

rear left hand frame rail.

22. Follow steps 1 – 19. For bed drilling locations see Figure 3A on page 5.

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