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| LESSON 5: DRIVEMASTER PARTS AND REPAIR KITS | |||||
| 5.2.1 DriveMaster Seal Kit | INDEX |
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Learning Objectives: • Describe when a Seal Kit would be used. |
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Button
Head Screws (#2): Used to attach the friction liner and the spring
housing / piston assembly to the sheave.
Cage Nut (#4): Used to keep the spring housing / piston assembly together when removing from the sheave. It maintains pressure on internal springs after the button head screws are removed. Air Chamber Seal (#6): Forms an air seal between the air chamber and the spring housing / piston assembly. It is positioned around the bottom half of the spring housing / piston assembly. Retaining Rings (#7, #12): There are two retaining rings in the seal kit. The smaller retaining ring is used to hold the air cartridge inside the journal bracket shaft. When installing this retaining ring, the beveled side must be facing the air cartridge. The larger retaining ring is used to hold the air chamber cap in place. O-Ring (#8): Forms an air seal between the air chamber and the air chamber cap. Face Seal (#10): Screws into the center of the air chamber cap, forming an air seal with the carbon tip of the air cartridge. Air Cartridge (#13): Fits inside the journal bracket shaft. Air pressure comes up through the center of the shaft, into and through the air cartridge, and into the air chamber. The air cartridge has a spring loaded carbon tip that presses against the face seal, forming an air tight seal while the fan drive is spinning. T55 Torx Plus Bit (not pictured): Used to remove the fan mounting disc from the jack bolt. O-Ring Lubricant (not pictured): Apply lubricant to the new air chamber cap O-ring and the air chamber seal before installation. |
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