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Revised 10/23/2017 

 

Page 3 

 

 

 
 

 
 

 
 
 
 
 
 

 
 
 
 

C.  Spacers are supplied to bring the steel swivel away  

from the frame in the event of any obstructions  
(Figure 5).  

c.  The ideal setup is to mount the 

steel swivel directly to the frame. 

 

NOTE: Use spacers only when necessary. 

 
 

D.  Install center bracket assembly (Figure 6).   

 

a.  Try to use existing holes in the frame to bolt through.  It is possible to remove any 

existing frame bolt and replace it with the supplied bolt in the bracket kit.  

Recommended torque for the 5/8 x 2-

1/2” bolt with washer is 110-115 ft-lbs. 

 
 
 
 
 
 
 
 
 
 
 

E.  Install center bracket as close to where the two fenders join 

together as possible (Figure 7).  
 

a.  Drill three 

5/16” holes through the fenders using the holes in 

bracket PB5069 as a guide.   
 

b. 

Use three 5/16” x 1 ¼” bolts to bolt the center bracket and 
fenders together. 

Recommended torque for all 5/16” 

hardware is 10-15 ft-lbs.

 

 

c. 

Use 5/16” fender washers and 5/16” nuts provided with the 
kit on the inside of the fenders. 

Figure 5 

Figure 6 

Figure 7 

NOTE:  Do not drill into the weld or any other 
part of the light box.  If a mud flap is mounted to 
the light box style fender and the mud flap is 
backed over, it may cause the interior welded 
plate to become loose.  Slot the mud flaps to 
prevent this issue.  This is NOT covered under 
warranty.   

See IMPORTANT assembly  
instructions for center bracket 
PB5069 & PB5067, last page  
of this form. 

 

Summary of Contents for B4578BTPA

Page 1: ... 2 SPACER 1 2 POLY SPACER 12 PB501026 26 5 COMPOSITE TAPERED BKT 4 PBLOCK COMP BRACKET BACKING BLOCK 4 I31C300BSF RBZ 5 16 X 18 X 3 HEX WASH HEAD B 16 I31C100BSF RBZ 5 16 18 X 1 HEX WASHER HEAD BL 24 I31N150WFEZ 5 16 X 1 1 2 FENDER WASHER 24 I31CNCF RBZ 5 16 18 CLASS F FLANGE LOCK 40 PB5067 STEEL ANGLE FOR PB5069 2 I62C250BFL8 RBZ 5 8 11 X 2 1 2 HEX FLG BOLT BZ 2 I62CNCG RBZ 5 8 11 CLASS G FLANGE ...

Page 2: ...y if using worn tires TIP Establish the minimum gap required in Step 3B a For an air suspension system place a board on top of the tires after the air has been let out of the airbags Figure 3 Place the fender on top of the board b For a spring suspension system add to the measurement from Step 3A STEP 4 A Position the fenders exactly where they will be mounted a Visually pick and mark the location...

Page 3: ...the two fenders join together as possible Figure 7 a Drill three 5 16 holes through the fenders using the holes in bracket PB5069 as a guide b Use three 5 16 x 1 bolts to bolt the center bracket and fenders together Recommended torque for all 5 16 hardware is 10 15 ft lbs c Use 5 16 fender washers and 5 16 nuts provided with the kit on the inside of the fenders Figure 5 Figure 6 Figure 7 NOTE Do n...

Page 4: ... 5 16 holes through the fender using the holes in bracket PB5071 as a pattern Figure 9 a Install the 5 16 x 1 bolts through the bracket and into the fender b Use 5 16 fender washers and 5 16 nuts provided with the kit on the underside of the fender c Recommended torque for all 5 16 bolts is 10 15 ft lbs H If possible position the mounting brackets so they are located within 15 of the bottom of the...

Page 5: ...TE DO NOT EXCEED RECOMMENDED TORQUE THIS WILL VOID THE WARRANTY TIP Do not completely tighten one side of the backing block before moving to the other side Alternate tightening bolts as pictured in Figure 12 Make sure to only tighten halfway and then repeat the pattern in Figure 12 until backing block is tight STEP 6 A Once the brackets are placed in position with the fender securely tighten the 5...

Page 6: ... tightening with Torque wrench is recommended DO NOT EXCEED RECOMMENDED TORQUE e Make sure the fenders are square and aligned Figure 14 Twists or bows in the fender will fatigue the material over time STEP 8 A For trucks with air suspension raise and lower the suspension one final time to confirm that there is adequate clearance between the fenders and wheels B Recheck all brackets and bolts to en...

Page 7: ...Revised 10 23 2017 Page 7 ...

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