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Question Was Asked By - William W


How to Measure a Trailer Hub for the Correct Size Grease Cap for a 1993 Coleman Pop-up Camper

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Grease Caps

Question:

I have a 1993 coleman popup with a 5 0n 4 1/2 hub how do I determine the grease cap size. Bought 2 from some one else they seamed to fit but on first trip they came off.

asked by: William W


Expert Reply:

You would need to measure the inside diameter of the hub opening to determine which cap size is needed. You would want to choose a cap whose outside diameter matches the inside diameter of the hub.

Some of the most common sizes are 1.980 inch, 1.986 inch, 2.441 inch and 2.717 inch. As you can see the sizes can differ by very small amounts. To measure accurately you may want to get a dial caliper so that you can be confident you are getting the correct size for your hub. I have included a link to our grease cap main page for you.

expert reply by: Mike L


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Product Page this Question was Asked From

Grease Cap, 1.988" OD Drive In


Grease Cap, 1.988" OD Drive In

ratingratingratingratingrating
3 reviews

RG04-020

Retail: $6.98

Price:  $2.95

Product Summary:

Standard Grease Cap
1.98 Inch

Product Specs:

Standard Axle
Drive-In


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