Wheels and Tires - Hudson Jet Servicing Information
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Wheels and Tires - Hudson Jet Servicing Information http://home.comcast.net/~sarahdyoung/hudsonjetwheels.html HudsonJet.net History | Servicing | Modifications | Library | Pictures | JetSet | Italia | Dealerships | VINs | Links | Events | Contact DISCLAIMER: Unless otherwise noted, service information has been provided by an edition of the Mechanical Procedures Manual for Jet models. The data from the Manual includes information covering specifications, adjustments and detailed operation involved in maintenance and repair procedures. After market updates from Hudson Service Merchandisers and other sources have been added as well and are credited in italics. HudsonJet.net provides this reference as a courtesy and is not responsible for any work done using Hudson Motor Car Company's publications or other sources provided on this site. WHEELS AND TIRES ← Return to Servicing Index ← Front Wheel Bearing Adjustment Specifications Tightening Wheel Hub Bolts Tire Inflation Wheel and Tire Balance Wheel and Tire Run-Out Frequently Asked Questions Replacement Parts List SPECIFICATIONS Type Super Cushion Tire Size 15 x 5.90 15 x 6.40 Wheel Sizes 15 x 4.00 15 x 4.50 Inflation Pressure Front 15 x 5.90 24 lbs. Rear 24 lbs. Front 15 x 6.40 24 lbs. Rear 22 lbs. FIGURE 1 WHEEL AND TIRE BALNCE The tires and wheels are balanced when they leave the factory, however, subsequent tire wear causes them to go out of balance. To prolong tire lift, it is recommended that the wheel and tire assemblies be checked for balance every 2,500 miles and whenever a tire is removed for repair or after it has been recapped. It is essential to maintain wheel and tire balance at all times to prevent uneven tire wear, high speed wheel tramp and excessive wear on front suspension and steering gear parts. Correct balance also contributes to ease of handling and riding comfort. The tire side walls have a red dot to indicate where the valve stem is to be placed in order to maintain original balance. BALANCING THE WHEEL AND TIRE FIGURE 2 Wheel balance is the equal distribution of weight of the wheel and tire assembly around the axis of rotation (static balance) and through the center line of the wheel and tire (dynamic balance). 1 of 6 7/15/2015 10:01 AM Wheels and Tires - Hudson Jet Servicing Information http://home.comcast.net/~sarahdyoung/hudsonjetwheels.html Wheel and tire assemblies must be balanced both statically, Figure 1, an dynamically, Figure 2. If the action of the front wheels causes a distrubance at the steering wheel, the first tiems to check are air pressure and balance of the front wheels and tires. Wheels may be statically balanced on the steering spindle of the car, although the use of an accredited wheel balancing fixture will facilitate the operations. NOTE: If wheels are checked for balance on steering spindle - make sure brakes are fully released and the front wheel bearings properly adjusted. TIRE INFLATION Maintaining proper tire pressure is the most important factor in obtaining maximum tire life, proper car handling / ease of handling, riding comfort / best riding qualities, and gasoline economy. To achieve this, the tire air pressure should be checked once a week. On long trips or if the car is driven extensively, they should be checked every morning before starting out. The air pressure in the tires will increase due to road onctact and internal friction more so in hot weather and after hard driving. The normal increase in pressured due to high temperature will build-up to about five pounds above "cold" pressure. Air pressure should always be checked when tires are cold to compensate for increase of pressure and ensure accutate pressure checks. Never reduce (bleed) tire build-up pressure in a tire. The tire is designed to protect itself by building up a safe pressure of a few pounds after it is run. This avoids excessive sidewall flexing and heat - both of which are detrimental to a tire. Avoid curb scraping, maintain correct tire inflation pressures. Avoid excessive speeds on curves, unnecessary braking and spinning of the wheels on fast starts. Tire valve caps should be finger tight to prevent loss of air which may escape from a leaky valve, also to prevent dust and dirt getting into the valve. Replace any missing valve caps. Too much tire pressure will cause tires to wear too fast in the center of the tread and will make it easier to break or bruise. Under inflation will cause rapid wear on the outer edges of the tread and increases rolling resistance of the car. The correct tire pressures are: Size Front Rear 5.90 x 15 24 lbs. cold 24 lbs. cold 6.40 x 15 24 lbs. cold 22 lbs. cold ROTATION OF TIRES Tire wear is actually more rapid on rear tires and is more uniform than on front tires. The tire treads are flexed in one direction while the engine is driving the car and in the opposite direction when brakes are applied; this action accounts for their even wear. Tire rotation is very important to obtain maximum tire wear. FIGURE 3 Tires should be rotated every 2500 to 3,000 miles; they will last much longer. The proper method would be to place the left front tire and wheel assembly on the left rear hub and move the right front tire and wheel assembly to the spare wheel position; place the right rear assembly on the left front hub and the left rear assembly to the right front hub. The spare wheel assembly will be installed on the right rear hub, Figure 3. Switching the tires in this manner changes their directon of rotation and equalizes the wear of 5 tires instead of 4. 2 of 6 7/15/2015 10:01 AM Wheels and Tires - Hudson Jet Servicing Information http://home.comcast.net/~sarahdyoung/hudsonjetwheels.html Never bo too hasty in diagnosing uneven tire wear as improper front wheel alignment. The following conditions should always be checked when uneven tire wear is present and in the order listed below: 1. Tire pressure 2. Wheel bearing adjustment 3. Brake adjustment 4. Wheel and tire balance 5. front wheel alignment FRONT JACK POSITIONING CHANGING THE WHEEL AND TIRE To avoid having more than one wheel jacked up at a time, always start by installing the spare wheel and tire first, then follow through as shown in Figure 3. Remove the spare tire and wheel from the rear compartment by taking out the clamp bolt and plate, using the wheel hub bolt wrench. Set the parking brake securely and block the wheel opposite the one being changed to prevent any movement of the car. Set the jack base on a level and solid footing and engage the lifting lug of the jack in the socket of the frame pad as shown in Front Jack figure and Rear Jack figure. REAR JACK POSITIONING The small lever located at the left side of the jack should be up when raising the car and down when lowering the car. Use the wheel bolt wrench to operate the jack. When removing a rear wheel, take off the wheel cover, by raising up the loop at the rear end until it is clear of its hook, then pull cover backward to disengage lug at front end. (See Wheel Cover figure.) Raise the car, turn wheel until pilot stud is at top, remove all wheel hub bolts and wheel and tire. WHEEL COVER Install wheel with pilot stud in the top position, then slide the wheel onto the hub using the pilot stud as a guide. install and tighten wheel bolts finger tight then lower car so that the tire just contacts the road surface. This will keep the wheel from turning during final tightening with the wheel hub bolt wrench. After tightening the hub bolts, replace hub cap, lower car and place spare tire in rear compartment. 3 of 6 7/15/2015 10:01 AM Wheels and Tires - Hudson Jet Servicing Information http://home.comcast.net/~sarahdyoung/hudsonjetwheels.html 4 of 6 7/15/2015 10:01 AM Wheels and Tires - Hudson Jet Servicing Information http://home.comcast.net/~sarahdyoung/hudsonjetwheels.html WHEEL BEARINGS Loose or worn wheel bearings, permitting the wheel to wobble, will cause scuffing of tires or even permit brakes to drag intermittently. FRONT WHEEL BEARING ADJUSTMENT 1. Jack up the wheel so it will revolve. 2. Remove outer and inner hub caps. 3. Remove cotter pin and turn adjusting nut to the right sufficiently to insure all parts are properly seated and then back off nut until a slight drag is felt when turning the wheel by hand. 4. Loosen the nut sufficiently to allow the wheel to turn freely. 5. Install new cotter key and clinch it. 6. Install inner and outer hub caps and lower car to the floor. FREQUENTLY ASKED QUESTIONS What is the bolt pattern? The bolt pattern on Hudsons is 5 on 4.5 spacing, which is standard on Chrysler cars up into the late 80s. (Except the older Imperial and 1/2 ton Dodge PUs, which are 5 on 5.5, same as Jeep and Ford PUs.) Look out for the center hole size, on Fords its smaller and won't fit on Hudson properly. A hole for the Hudson line up pin will need to be drilled in most wheels. Mopar, AMC, and Studebaker wheels DO work on the Hudsons. REPLACEMENT PARTS LIST Front Wheel Bearings: Timkin: Cone 15125-T / Cup 15245-T .... The 15125-T cone is not too difficult to find here but the prices are frightening, indeed, if you are seeking new ones.