Model 9600/9700 Swing-Reach ® Lift Truck Drive and Brake
Drive Tire Pressing Misalignment of the tire and hub while the tire is being pressed onto the hub can cause damage to the hub. For this reason, chamfers have been provided on the outside edge of the hub and on the end of the inside diameter of the tire’s metal insert. The chamfers help to center the hub and tire during the pressing operation and reduce the possibility of misalignment. To prevent damage, install the hub on the circular ram with its chamfered side up. 1. Check the inside surface of the metal insert on the new tire. Remove any scaling or rust with sandpaper. Clean the inside of the metal insert and lubricate it with a soap solution. 2. Place a circular ram on the press table. See Figure 7-42. The length of the ram must be longer than the width of the old tire to permit complete removal of the old tire. The outside diameter of the ram must be small enough to fit loosely in the insert of the tire but must be large enough to rest squarely on the flat surface on the outer edge of the hub. Figure 7-42.
Drive Tire Installation
Section 7. Component Procedures Drive Tire Pressing smaller in diameter than the inside diameter of the tire insert and the same thickness as the depth of the recess) to obtain the correct amount of recession. 4. Position the hub assembly with the old tire on the top of the circular ram so the outside of the wheel is positioned upward. The outside edge of the hub has a chamfer to help guide the new tire onto the wheel. The chamfered edge must always be the leading edge when you press a tire onto the hub. 5. Center the hub assembly on top of the ram and make sure that they mate squarely. 6. Apply grease to the inside of the tire rim. 7. Position the new tire with its chamfered insert facing the hub. Align the new tire and the hub so that they are concentric. 8. Begin pressing the new tire onto the hub and the old tire off the wheel. Run the press slowly for the first few inches of travel, because this is the critical stage of the operation. If the tire begins to cock to one side, stop the press and realign the tire. A sharp jar with a soft-headed mallet will usually realign the tire on the hub. 9. If the new tire does not press on with a minimum of 5 tons (68,947 kPa) pressure, try pressing a different new tire. If the tire still does not press on, replace the hub and tire assembly. 10. Release the press. Remove the wheel, tire assembly, and the old tire from the press table. Wipe off any grease. Inspect the wheel and tire assembly.
3. If the outside edge of the hub is not flush with the edge of the metal insert in the old tire, measure how far the hub is recessed inside the tire. Place the new tire in the same position the old tire was installed on the hub. You can use a spacer (slightly
Publication: 1089040, Issued: 08 Apr 2016
7-35
