Fontaine KIT-BLK-SLD Service manual

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3520 Industrial Way • Jasper, AL 35501 • www.fifthwheel.com • 800-874-9780 • Email: info@fifthwheel.com
Installation Procedure (Please read all of the instructions before beginning.)
1. IMPORTANT NOTES:
I. Blocking kits offered for Fontaine’s sliding and plate mount fifth wheels MUST be installed by a certified
welder.
II. WARNING: Failure to follow these instructions could cause a hazardous condition. Fontaine International is
NOT responsible for improper installation or any welding to this product.
III. The top plate must be removed from the bracket before installing the blocking kit. All surfaces to be welded
must be clean and free of paint and grease.
IV. This blocking kit can ONLY be used on heavy duty 5092 Series Fifth Wheel’s with Mounting Heights of 8-3/4"
to 10-3/4".
Blocking Kit – KIT-BLK-SLD
for Heavy Duty 5092 Series Fifth Wheels
FIGURE 1
KIT CONTENTS
Cotter Pin
Washer Shaft Support
Tube Support
Tube Support
Spreader Tube
Shaft
Spacer
Shaft Support
Bracket
Guide 3/4"
Square Bar
Bracket
Guide 3/4"
Square Bar
Extension Block
Extension Block
ISO/TS16949 REGISTERED
TB-030 • February 2003

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3520 Industrial Way • Jasper, AL 35501 • www.fifthwheel.com • 800-874-9780 • Email: info@fifthwheel.com
FIGURE 2
Tube Support Placement Tube Support Placement
Wheel Cap
Tube Supports
FIGURE 3
Grease
Groove
Tube
Supports
FIGURE 4
Tube and Tube Supports Tube and Tube Supports
Tube Tube Supports
FIGURE 5
2-5/8”
2-5/8”
2. Place tube supports into top plate as shown in Figures 2 and 3.
3. Now place tube into tube supports as shown in Figures 4 and 5. Make sure tube is parallel to rear cross
member. The tube supports should be flush with the wheel caps and the bottom chamfer should rest just over
the grease groove as shown in Figures 2 and 3. Tube supports may need to be trimmed for proper fit. The tube
should measure 2-5/8" from rear cross member to front side of tube on both sides as shown in Figure 5.

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3520 Industrial Way • Jasper, AL 35501 • www.fifthwheel.com • 800-874-9780 • Email: info@fifthwheel.com
FIGURE 6
Tack Weld Locations Weld Locations For Tube Supports
Tack Weld Here
Tack Weld Here
FIGURE 7
Weld Tube
Supports
Here
FIGURE 8
Weld Locations For Tube Supports Weld Locations For Tube Supports
Weld Tube
Supports
Here
FIGURE 9
Weld Tube
Supports
Here
4. After tube supports and tube are in the correct position, tack weld tube supports to tube as shown in figure 6.
This will help keep parts from drawing when final welds are made. Next, turn tube supports over and place a
3/16" minimum fillet weld as shown in Figures 7, 8 and 9.

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3520 Industrial Way • Jasper, AL 35501 • www.fifthwheel.com • 800-874-9780 • Email: info@fifthwheel.com
FIGURE 10
Weld Locations For Tube Supports Weld Locations For Tube Supports
Weld Tube
Supports to
Top Plate Here
FIGURE 11
Weld Tube
Supports to
Top Plate Here
5. Place tube supports and tube back into the top plate. Next, weld tube supports into top plate as shown in
Figures 10, 11 and 12 while maintaining the 2-5/8" measurement from Figure 5 on
page 2.
NOTE: The tube supports require a Three-Pass, 3/16" minimum fillet weld on each pass.
FIGURE 12
Weld Locations For Tube Supports
Weld Tube
Supports
Here

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3520 Industrial Way • Jasper, AL 35501 • www.fifthwheel.com • 800-874-9780 • Email: info@fifthwheel.com
Throat Plate Installation
FIGURE 13
Weld Here
Spacer
FIGURE
14
Throat Plate Installation
Weld Here
Spacer
FIGURE 16
Correct Position of Tube Supports
Rocker Limit Block and Guide Bar
FIGURE 15
Rocker Limit
Block
Guide
Block
6. Insert the 5/8" x 1" x 8.25" flat spacer bar behind tube. Next, tack the bar into position. Finally, weld a 3/16"
minimum fillet weld to throat plate, spacer and tube as shown in Figures 13 and 14.
7. Remove the Rocker Limit Blocks and Guide Bars (see Figure 15) from the lower assembly. Grind or burn blocks
off and grind all excess material until surface is flat.
8. Place top plate back on the bracket and set a level on top of top plate (figure 16).
9. Slide one shaft support onto shaft making sure the notched end of the shaft support is towards the front of top
plate and the tube of the shaft support is facing away from fifth wheel.
10. Slide shaft into tube and into the other shaft support making sure the notched end of shaft support is towards
the front of the wheel and the tube of the shaft support is facing away from fifth wheel as shown in Figure 16.
11. Trim ends of shaft supports, if necessary, so that top plate is sitting level.

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3520 Industrial Way • Jasper, AL 35501 • www.fifthwheel.com • 800-874-9780 • Email: info@fifthwheel.com
NOTE: If blocking kit is being installed on sliding mount you must install extensions and bracket guides on rear of
bracket as shown in Figures 17 through 20.
NOTE: Weld Extension Block As Shown in Figure 17. Grind Extension block weld flush with bottom side of bracket.
12. Install Bracket Guides as shown in Figure 18. Make sure bracket guide is 5/8" away from outside edge of slide
bracket as shown in Figure 19.
NOTE: Do not weld on outside edge of guide. A weld in this location will cause interference with slide rail.
13. Tack shaft supports onto lower mount on all four sides making sure shaft will slide after each tack. Tap shaft
supports with a hammer until shaft will slide easily. Weld shaft supports to plate mount using a 3/16" minimum
fillet weld on all four sides as shown in Figures 19 and 20.
14. Assemble the provided washer and cotter pin onto shaft as pictured in Figure 16 (previous page).
15. Lubricate the entire length of the shaft with Never Seize before first use.
FIGURE 17
Weld Extension
Block Here
Slide Bracket Extension
FIGURE 18
Bracket
Guide
Extension Block
Slide Bracket Extension
Weld Pattern For Shaft Supports Weld Pattern For Shaft Supports
5/8"
Weld Extension Blocks Here
Shaft
Support
FIGURE 19
Weld Extension Blocks Here
FIGURE 20
END OF PROCEDURE