Document bBK8KEMv0NYnOo579LnQKjMd6

FILE NAME: AMMCO (AMC) DATE: OOOO DOC#: AMC015 DOCUMENT DESCRIPTION: Industry Product Instructions G rinding the shoe using the No. 8050 Universal Brake Shoe Clamp shown in Figure 15 is similar to the proce dure for using the No. 82 50 Fixed A nch or Clamp. Rotate the.Handle clockwise 1/8 turn at a time, mov ing the Handle from side to side un til the entire surface of the shoe has been reconditioned by the Abrasive Belt. Periodically check the calibration of the Model 890 Brake Shoe Grinder. Refer to Figure 16. To do this: 1. Unlock the Slide. Set it at the 6 " setting. 2. Set Micrometer Dial at zero. 3. Put the No. 9632 Calibration Pin through the hole in the Slide. (The Pin is 3/16" in diameter.) 4. Turn the Dial gently back and forth until the Pin drops through under slight pressure. 5. A t this point the Dial should read zero, and the calibration is correct. Figure 15 -- G rin d in g a brake shoe w ith the No. 8 0 5 0 Universal Brake Sh oe Clam p IF A C O R R EC T IO N IS R E Q U IR E D 1. Lock the Slide with the No. 9632 Calibration Pin in place. 2. Loosen both set screws in the Micrometer Dial until the Dial X is free. 3. Turn the Micrometer Dial to zero. Use a screwdriver to hold the Micrometer Screw forward against the Slide Key and tighten both Dial Set Figure 16 - Inserting N o. 96 3 2 C ali b ratio n P in to che ck calibration of M ode l 8 9 0 Sh o e G rinder Screws evenly. 4. Release the Slide Lock. Re- muve the Calibration Pin and recheck the dial reading. Study this manual carefully until you are thoroughly fam iliar with the procedure for grinding brake shoes. Ol 38 Hn mliUmJlLrOn ^ M Q TOOLS,INC. 2100 COMMONWEALTH AVENUE NORTH CHICAGO, ILLINOIS 60064 nm m cg IH 3 HOWTO GRIND A BRAKE SHOE PREPARED BY THE AMMCO TRAINING CENTER mina tools,inc. 2100 COMMONWEALTH AVENUE NORTH CHICAGO, ILLINOIS G00G4 HOW TO Grind a Brake Shoe on an AM M COmodel 8 BRAKE SH O E GRINDER in this manual we show the proper way to grind a brake shoe on an AMMCO Mode/ 890 Brake Shoe Grinder. Grinding brake shoes is the step fol lowing reconditioning of the brake drums. First, determine the drum diameter. Y ou can do this in any one o f three ways: on the Lathe using the A M M C O Model 8500 Brake Drum Micrometer, on the Lathe using the Cross Slide Depthof-Cut Dial, or off the Lathe using the Brake D rum Micrometer. Fig ure 1 shows the brake drum being measured on the Lathe after the finish cut has been taken. The Micrometer reads 58 (.058"), and yo u 'll notice the instructor is point ing with his right hand to the Cross Slide Dial which also reads 58. One way you can save time is to grind the shoe while the Lathe is making the finish cut on the drum. Y ou sim ply take your reading off the Cross Slide Depth-of-Cut Dial and use the same reading to set up the Model 890 Shoe Grinder. Many shops prefer to take the finished drum off the Lathe, measure it, mark the dimension in chalk on the drum and later grind the shoe to match. If done correctly, whichever way you do it, the fin ished brake shoe will be ground with an arc matching the newly machined brake drum. Figu re 1 -- M easuring the drum on the Lathe using the Brake D ru m M ic ro m eter or the C ross Slid e D epth-of-C ut D ia l. Figure 2 -- A d justing G rinder Slid e T o D ru m Diam eter Figure 3 - Se ttin g ih e M ic ro m e te r Diet to the reco nd ition ed d r u m '* diam eter The next step is to adjust the Grinder Slide to the drum diameter. To do this y o u unlock the Grinder Table by moving the Slide Lock Lever away from you. In Figure 2, the instructor is shown doing this with his right hand. Then set the Micrometer at .000". Pull out the red knob of the Slide Index Pin at the left. With the Pin pulled outward, slide the table with your right hand until the pointer on the table is opposite the proper drum diameter - in this case the pointer is on 11". Then push the Slide Index Pin inward. A s shown in Figure 3, the next step is to set the Micrometer Dial to the reconditioned drum 's diameter, as indicated on the Brake Drum Wicrometer or o n the Cross Slide Depth-ofCut Dial. In our example it was 58 (.058"). Turn the Micrometer Dial on the Grinder clockwise to the nearest division. In this case you'd set it to 6 0 since it is the nearest division to 58. This sets up the pivot point of the Shoe Clamp to grind the correct shoe radius but does not control the depth of feed. Pull the Lock Lever toward you to lock the Grind er Table. The Model 89 0 Shoe Grinder permits fast, accurate shoe grinding to the "brakes applied" po sition ensuring accurate lining to drum contact. The clamp is the correct one to use for grinding shoes with dual servo (Bendix type) brakes, that have fixed or non-adjustable anchors. This includes most cars in use now. Figure A -- M o d e l 8 9 0 S h o e G rin d e r is the correct m odel to use fo r grind in g shoes w ith dual servo (Benriix type) brakes 3 Your next step will be to select the correct Gage Plate, and you do this by referring to the No. 4181 Speci fication Chart as shown in Figure 5. The Specification Chart enables you to select the correct Gage Plate and Anchor Pin Sleeve when you have either the make, model number and year of car or the F S M I number from the brake shoe box. Figure 6 is a closeup of the No. 4181 Specification Chart, and in this example we have selected Gage Plate No. 4127 and Anchor Sleeve No. 2 for Brake Shoe No. 228 (1970 Chevrolet). Figu re 5 -- Se le ctin g correct G age Plate u sing thB N o . 4 1 8T Sp e cifica tio n C hart or the F M S l number X Fig u re 6 -- In stru c to r selects G age Plate No. 4 1 2 ? and A n c h o r Sleeve N o. 2 for Brake Sh oe N o. 228 ov to Now, as shown in Figure 7, the next step is to install the Gage Plate. The Gage Plate goes over the Anchor Pin and the Locating Pin. Figu re 7 -- In sta llin g the C a g e Plate Pay particular attention to the blunt, slightly curved portion of the Gage Plate because, as you 'll see in Figure 8, the end o l the Gage Plate must be snugly seated against the Pin on the Rod. Figu re B -- E n d o f the G age Plate m u tt be snugly seated to the P in on the Rod. T h e instructor is p o in tin g to the P in on the R o d w ith h is pen. Next, as yo u 'll see in Figure 9, lock the brake shoe into the Shoe Clamp. Locate the eye of the shoe firm ly against the Anchor Pin. Hold the back of the shoe against the two Locating Bosses o l the Clamp. Then lock the shoe firmly in place by moving the Handle down. Ftihgue rCe l9a m- p L o c k i n g lh e B r . k e S h o e In r o H Figure 10 is a drawing showing the location of the shoe during grinding. Sw ing the Handle away from you (toward the Dust Bag) and start the motor. Feed the shoe into the rotating Abrasive Belt by turning the Handle clock wise. Then swing the Handle from side to side as you move the shoe against the Abrasive Belt. After each swing o f the Handle, rotate the Handle 1/8 turn until you've resurfaced the entire lining. The No. 8050 Universal Brake Shoe Clamp shown in Figure 11 (optional equipment) is recommended for grinding brake shoes o f trucks, motorcycles, domestic and foreign cars, and industrial brakes that do not have the conventional eye. The Clamp Buttons locate on the brake shoe table to allow accurate grind ing of irregular or cast shoes down to 6". Figu ra 11 -- No. 8 0 5 0 Universal B rake S h o o Clam p 6 0141 Figure 12 -- R e m ovin g the N o. 8 2 5 0 Fixe d A n ch o r C la m p To remove the standard No. 8250 Fixed A nchor Clamp from the No. 8 9 0 Shoe G rinder and substitute the No. 8050 Universal Brake Shoe Clamp, unscrew the set screw using an Allen W rench as show n in Figure 11, and remove the Knurled Pin. l Then lift the Feed Handle and slide the Clam p out as shown in Figure 13. F ig u re 13 -- L iftin g H a n d le to slide out the N o. 8 2 5 0 C lam p To install the No. 8 0 5 0 Universal Brake Shoe Clamp, lift its Handle and slide the Guide Rods into the ways as show n in Figure 14. 9 - Figu re 14 -- Installing the N o. 8 0 5 0 U niversal B rake S h o e C lam p