BALL BEARING 5P2448 - Caterpillar

Description
There are two types of static drains. The drains will be referred to as "non-load cell" and "load cell".The "non-load cell" type of static drain consists of a plate which fits into the cavity of a lower bearing. The "non-load cell" static drain attaches with four 6x32 socket cap bolts. The static drain has a stand that is mounted to a plate which holds a copper-beryllium strip.The "load cell" type of static drain is mounted with a Phillips screw and a washer. The static drain is mounted to the top of the "load cell" device.Both types of static drains remove static electricity from the rotor by having the copper-beryllium strip on the surface of the polished bottom retainer bolt.There are two procedures that make sure that the proper amount of tension is applied to the polished bolt and the static strip."Non-Load Cell" Static Drains
The Non-Load Cell Static Drain can be upgraded to the Load Cell Static Drain. Refer to Systems Operation, Testing and Adjusting, "Attachments" for information in upgrade kits.
Measure the distance from the mating surface of the plate on the static drain on the bearing to the polished bolt head. The measurement will be referred to as (A) .
Adjust the angle of the copper-beryllium strip so that the height from the surface of the plate to the tip of the brush is 1.0160 mm (0.040 inch) greater than measurement (A) ."Load Cell" Static Drains
Verify that the replacement charge drain measures 8.6360 0.5080 mm (−.34 .02 inch) from the tip to the middle of the bend with calipers.
Illustration 1 g01269970
Check of the Length for the Charge Drain
Add one drop of thread compound into the threaded hole next to the charge drain slot in the load plate.
Illustration 2 g01269975
Initial Installation of the Charge Drain Strip
Thread the screw through the washer. Install the screw and the washer onto the load plate.Do not tighten the screw completely. Allow enough clearance so that the washer can slide freely underneath the screw head. Refer to Illustration 2 (B) .
Slide the folded, short end of the drain (charge) into the slot of the load plate and underneath the washer. Refer to Illustration 2 (C) .The drain (charge) should seat all the way to the back of the slot. The washer is oversized. The washer should be positioned so that the washer does not overlap the bend in the drain (charge). Refer to Illustration 2 (D) .
Verify that the tip for the drain (charge) is at the correct angle. Use the gauge block for the drain (discharge).Slide the gauge block so that the tip of the drain (charge) is resting on the block. Refer to Illustration 3. This should be no more than (1/8 inch).If the tip is at the correct angle, then the tip for the drain (charge) will rest flat on the angled surface. Make sure that the tip does not deflect downward when the block is removed.Do not use the gauge block as a means of bending the charge drain into