CONNECTING RODS, PISTONS, RINGS & SLEEVES - CONT

CONNECTING RODS, PISTONS, RINGS & SLEEVES - CONT - TM-5-3820-256-24-5_251

CONNECTING RODS, PISTONS, RINGS & SLEEVES - CONT - TM-5-3820-256-24-5_253

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL CONNECTING RODS, PISTONS, RINGS & SLEEVES Section 5 e. To disassemble tool holder from unit, remove cap screw and washer. Pull out on plunger (9) and permit shaft to move back and forth freely. By hand, bump tool holder against adapter plate until it is free from unit. DO NOT strike or damage the tool bit. Figure 24. - Counterboring Tool and Component Parts 1. Handle 2. Adjusting nut 3. Driver unit 4. Cap screws 5. Cap screws 6. Adapter plate 7. Tool holder 8. Cap screw 9. Plunger 10. Locking screw 3. Preset the tool bit as follows: a. Install tool bit (1, Fig. 25) into tool holder (5). b. Place feeler gauge (3) on O.D. of tool holder as shown. c. Push tool bit out until it touches feeler gauge. d. Lock tool bit into position with clamp (4). NOTE: Tool bits must be handled with extreme care, to avoid possible damage from shock contact with hard surfaces. Figure 25. - Presetting Tool Bit 1. Tool bit 2. Press with fingers here 3. Feeler gauge 0.20-0.25 mm (0.008-0.010 In.) thick 4. Clamp 5. Tool holder 4. Prepare Crankcase for counterboring as follows: a. Remove all scale and carbon from deck and counterbore. b. Remove all burrs and nicks. Check edges of block for raised areas and remove with file. DECK MUST BE FLAT. 5. Install Counterboring Tool as follows: (Refer to Fig. 26). a. Pull out handle (1, Fig. 26) until plunger (9) will hold tool holder (7) in UP position. b. Place unit on crankcase with hold down holes matching holes in crankcase. e. Tool bit is now set for correct diameter cut. CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 23

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