OPERATION MANUAL BRC450 Hub Mounted on-the-car Lathe RTI TECHNOLOGIES, INC. Division of A’Gramkow York, PA 17402 800-468-2321 (ext.
Table of Contents I Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 II Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 III Checking out the Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 IV Initial Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 1 Exploded View of Lathe . . . . . . . . . . . . . . . . . . . . . . . .
I. Introduction Thank you for your purchase of a BRC450 brake lathe. Congratulations on your choice! The BRC450 is designed to outperform every other comparable hub mounted brake lathe in all respects. The BRC450 was designed as a completely new product. It is somewhat similar to a lathe supplied by Hunter in the past, but the new BRC450 has many improvements and changes in design.
II. Safety Before we go to the next step, some reminders about safety: A. Avoid a major injury because of an unexpected start-up! Be sure that the BRC450 is not plugged in and supplied with electrical power when the lathe in not operating. This is particularly important when mounting the unit and performing the compensation adjustments. In addition, the BRC450 has a spring loaded rotary “on/off” switch and requires the switch to be held in the “on” position momentarily to start.
III. Checking out the parts A. The BRC450 and BRC450L lathe comes standard with: Main lathe housing assembly.
IV. Initial Set-Up A. Cleaning. The BRC450 is shipped with a rust preventative material on the unpainted surfaces. (See Figure 1). Clean these surfaces, removing the rust preventative with a cleaning solvent. Do not use a solvent that will dissolve the paint. After cleaning, apply a light machine tool oil to lubricate the cleaned surfaces. You will need to move the tool slide outward to its maximum extension with the hand wheel and extend the axial adjustment tube. (Be sure to dis-engage feed engagement.
Figure 1 Exploded view of lathe 1 1a 2 3 4 5 6 7 8 9 10 11 Motor Switch Power Cord Receptacle Motor Case Spindle Outer Tool Holder Inner Tool Holder Clamping Lever Tool Slide Micrometer-Inner Tool Holder Micrometer - Outer Tool Holder Handle 12 13 14 14a 15 16 17 19 20 21 31 50 Clamping Screw for Axial Adjustment Foot Feed Drive Clutch Knurled Screw Handwheel Rating Plate Oil Filter Plug Handle Support Limit Switch Power Cord Adapter Page 5
Figure 2 Assembly exploded drawing of Transport/Setup Lift Page 6
Figure 3 Tip holder and cutting tip set-up for rotors (positive rake) Page 7
V. Cutting Brake Rotors/Discs A. Installing the Cranks and Centering Plate. (See Figure 4 ) The standard set-up uses the standard Centering Plate and 90 mm long Cranks. Note that on the outside of the Centering Plate, next to each hole are the stamped numbers “3",” 4", or “5". For 4 lug hubs, you insert (4) Cranks from the side opposite the stamped numbers into the (4) holes marked “4". For 5 lug hubs, you insert the (5) Cranks into the (5) holes marked “5".
Figure 4 Centering Plate & Crank Attachment Page 9
Figure 5 Centering Bell and long leg set ups Page 10
NOTE: At this point, the Transport/Setup Lift can be disconnected and moved out of the way if desired. E. Set-up for Compensation. (See Figure 6) First, note the scribed marks on the large 27 mm nuts and the body on each crank. Using the supplied 27 mm wrench, tighten each nut until the nut bottoms out against the body of the Crank, then loosen the nut one full turn until the two scribe marks are aligned and there is a small 0.5 mm (0.020") gap between the nut and the Crank body.
Figure 6 Runout Compensation Page 12
G. Setting up for cutting. With the auto feed dis-engaged (See Figure 1) manually turn the wheel, moving the cutting tool slide and the cutting tips to a position almost touching the rotor’s largest diameter. Note that there are two locking levers, one on the top of each cutting tool holder along with a graduated adjusting knobs.
K. Finish cut. If another at least another 0.008" (0.20 mm) could be removed without the rotor being thinner than the discard thickness, then up to 0.004" (0.01 mm) can be removed (0.004" = 0.10 mm each side) leaving some material for future wear of the rotor. If so, move the tool slide inward manually and set each tool for a 0.002" (0.05 mm) “finish cut”. L. Cutting the other side. On one side of the vehicle the BRC450 will need to be positioned up-sidedown. Otherwise, setup and operation are the same.
