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Revised 04/01/2016 

 

Page 1 

 

 

 
 
 
 
 

B4850WOA 

Fender Mounting Instructions for MIN4050, MIN950 & MIN1550 Fenders 

 

STEP 1 

 

A.  Unpack all cartons and lay out parts. 

 

B.  Compare the parts with hardware kit B4850WOA as shown in Figure 1. 

 

  

 

 

 

 
 
 
STEP 2 

 

A.  Measure the suspension travel.  This measurement is used to determine the distance 

between the fender and the wheel.  
 

a.  For air suspension systems, let the air out of the air bags.  

 

b.  For spring systems, measure from the stops on the springs to the bottom of the 

frame.   

 
NOTE:

 

For air suspensions with travel exceeding 6”:

   

In some cases a travel stop may need to be installed to prevent such large gaps 

between the fenders & tires.  This will help with alignment and 5

th

 wheel plate clearance.   

(

Please call Minimizer @ 800-248-3855 for questions regarding this issue).  

 

 
 

PART NUMBER

DESCRIPTION

QTY

PB5010

STEEL WELD-ON TAPERED BRACKET

2

I31C100BSF/RBZ 5/16-18 X 1 HEX WASHER HEAD BL

12

I31CNCF/RBZ

5/16-18 CLASS F FLANGE LOCK

12

I31N150WFEZ

5/16 X 1 1/2 FENDER WASHER

12

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 LOCK N

2

PB1/2"SPACER

1/2" POLY SPACER

2

PB5069

COMPOSITE CENTER BRACKET

2

I31C125BSF/RBZ 5/16-18 X 11/4 HEX WASH HEAD B

8

I31CNCF/RBZ

5/16-18 CLASS F FLANGE LOCK

8

PB5071

COMPOSITE ANGLE FOR PB5069

2

I31C125BSF/RBZ 5/16-18 X 11/4 HEX WASH HEAD B

14

I31CNCF/RBZ

5/16-18 CLASS G FLANGE LOCK

14

B4850WOA Mounting Kit 

 
 

Figure 1 

 

 

Summary of Contents for B4850WOA

Page 1: ...arge gaps between the fenders tires This will help with alignment and 5th wheel plate clearance Please call Minimizer 800 248 3855 for questions regarding this issue PART NUMBER DESCRIPTION QTY PB5010 STEEL WELD ON TAPERED BRACKET 2 I31C100BSF RBZ 5 16 18 X 1 HEX WASHER HEAD BL 12 I31CNCF RBZ 5 16 18 CLASS F FLANGE LOCK 12 I31N150WFEZ 5 16 X 1 1 2 FENDER WASHER 12 PB5067 STEEL ANGLE FOR PB5069 2 I...

Page 2: ...stem add to the measurement from Step 2A STEP 3 A Position the fenders exactly where they will be mounted a Visually pick and mark the locations that the brackets will attach to the frame B It is possible to bolt a plate not supplied to the frame and weld the brackets to that plate Figure 3 Another option is to weld the bracket directly to the frame a Plate should be a minimum of thick steel Tip C...

Page 3: ...bracket and fender together b Use 5 16 fender washers and 5 16 nuts provided with the kit on the inside of the fender Recommended torque is 10 15 ft lbs E Some installations may not allow the center bracket to bolt through the end of the fender a In these cases use the plastic angle PB5071 to connect the fender to the center bracket assembly Figure 7 c Use three 5 16 x 1 bolts washers and nuts to ...

Page 4: ...ions 20 htmlfor further suggestions on adding additional support STEP 5 A Attach the bracket PB5010 to the fender a Drill six 5 16 holes through the fender using the holes in bracket PB5010 as a guide b Install the 5 16 x 1 bolts through the bracket and into the fender c Use six 5 16 fender washers and 5 16 nuts provided with the kit on the underside of the fender d Tighten the bolts Recommended t...

Page 5: ...Revised 04 01 2016 Page 5 ...

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