Expert Answers about Forest River Cardinal Fifth Wheel

• Middle Section Width of Yates Spool Roller for Boat Trailers # YR410Y-4
• The middle/flat section of the Yates Spool Roller for Boat Trailers # YR410Y-4 that you referenced is 1-3/4 inches.
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• Mounting Plate Dimensions of RV Trailer Hitch
• The mounting plate for the Lippert 1-1/4" Trailer Hitch Receiver # LC240220 is 8 inches wide and 3-1/2 inches tall. It has mounting holes which are 2 inches apart on center vertically and 6 inches apart on center horizontally. I have added a link to a video review for you to check out as well.
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• How Should the Grease Seal Fit to the Spindle
• Yes. A grease seal like the # 10-19 that comes in the # BK2-100 will fit tightly against the spindle in order to seal the grease inside the hub from the rear. In order to make sure you've got the correct fit you will want to measure the rear hub bore where the seal is inserted into the hub. The seal's outer diameter needs to be close to this hub bore dimension in order for it to properly function. You'll need a digital calipers like the 4" Carbon Fiber Digital Caliper # PTW80157 to measure...
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