For those with the Oshkosh Truck chassis the following information from my Oshkosh Truck manual might be enlightening.<br/>The model (example) given is V-917-4<br/>The V is the model series.<br/>The first digit (9) is the nominal front axle rating in thousands of pounds: 9,000#<br/>The next two digits (17) are for the nominal rear axle rating in thousands of pounds: 17,000#<br/>The last digit...