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Hersteller: Hitachi Dateigröße: 308.91 kb Dateiname: Unterrichtssprache:

(3.7 mm) clearance between the poppets and the seat when it is open. See Fig. 8. WARNING To reduce the risk of pinching or amputating your fingers, always keep fingers clear of the toggle assemblies (M). 7. Install the springs (31) and pivot pins (30) on the toggle arms (37). Snap the toggles to the up position. Refer to Fig. 7. 8. Carefully lower the cylinder (51) over the piston (59) and onto the base (55). Secure with the six screws (25). 9. Manually push on the piston rod (41) to move the piston (59) up as far as it will go. Grip the trip rod (54) with padded pliers and screw the cylinder cap nut (47) onto the trip rod. Pull the piston rod (41) to move the piston down. Be sure the o-ring (27) is in place at the top of the cylinder (51), and screw the cap nut into the cylinder. 10. Screw the connecting rod (10) into the piston rod (41) and secure with the pin (4*). Manually push on the piston rod (41) to move the piston (59) up as far as it will go. Screw the riser tube (12) into the base (55). 11. Use a 1/4” diameter rod, spanner wrench, or torque wrench to tighten the packing nut (42). Tighten snugly and then tighten an additional 1/2 turn (20–25 ft–lbs). 12. Install the muffler plate (20 or 40) using the six screws (24). 13. Connect an air hose and run the pump slowly [about 30 psi (2.1 bar)] to see that it operates smoothly. 14. Remount the pump and reconnect the ground wire. 306531 15 16 306531 Displacement Pump Service Before you start: 1. Have all necessary parts on hand. Whenever you replace the packings, also replace the glands and bearing. If you are using a repair kit, use all the parts for the best results. See the parts pages to order the kits. 2. Displacement Pump Repair Kit 206925 includes repair parts for the pump throat and piston. Parts included in the kit are marked with one asterisk, for example (6*), in the text and drawings. 3. To replace the throat packings, which are included in Repair Kit 206728, refer to the Air Motor and Throat Disassembly on page 13. Displacement Pump Disassembly WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8. 1. Flush the pump. 2. Relieve the Pressure 3. Disconnect the hoses, remove the pump from its mounting, and clamp the air motor base in a vise. 4. Unscrew the intake valve body (22) from the riser tube (12). See Fig. 9. Disassemble the intake valve. 5. Clean and inspect the parts for wear or damage, and replace parts as needed. Unless further service is needed, reassemble and reinstall the intake valve, using liquid sealant on the male threads. See Fig. 9. 6. Use a strap wrench on the riser tube (12) to screw it out of the air motor base (55). Carefully inspect the smooth inner surface of the cylinder for scoring or irregular surfaces. Such damage causes premature packing wear and leaking, so replace the part if damaged. 7. Unscrew the piston body (13) from the piston coupling (14). Remove the ball (2*), seat (19*), gasket (6*), bearing (18*), packing (17*), and seal (16). Do not remove the press-fit brass bearing (15*). See Fig. 9. 04212B Fig. 9 *17 †7 3* 21 22 12 13 16* 18* *6 2* *19 *4 14 10 46 55 *15 *4 7 Displacement Pump Service NOTE: If the pressure-fit brass bearing (15*) needs to be replaced, clamp it in a vise and drive the piston body (13) out with a plastic hammer. The new bearing must be started onto the piston body squarely. 8. Clean and inspect the parts and replace any that are worn or damaged. Be sure to check the copper gasket (46) in the motor base (55). Lubricate the parts with a light waterproof grease. 9. Install the seal (16*), packing (17*), bearing (18*), gasket (6*), seat (19*) and ball (2*) on the piston body (13). The check ball seat (19*) may be reversed to provide a new seat. Screw the piston body (13) into the piston coupling (14). 10. Install the gasket (7*[). Screw the riser tube (12) into the air motor base (55). 11. Reinstall the ball (3*), gasket (7), ball stop (21) and other gasket (7) in the intake valve housing (22). Screw the housing onto the riser tube (12). 12. Be sure the ground wire is connected before regular operation of the pump. 306531 17 Parts 10 14 2* 19* 6* 18* 17* 12 3* 22 21 13 15* 47 27 51 35 29 37 31 30 28 34† 33† 32† 33† 54 57 58 †36 59 45† 41 *4 38 55 20 24 60 63 25 *4 53† 39† 42 44* 43 50* 48* 49* 16* 46 7*† Model 206405, Series K 35 lb. pail size 7 7 04213B 18 306531 Parts Model 206405, Series K 35 lb. pail size Ref No. Part No. Description Qty. 2* 100114 BALL, steel, 0.44” (11.2 mm) dia. 1 3* 100400 BALL, steel, 0.75” (19 mm) dia. 1 4* 101579 PIN, roll, 0.12” (3.2 mm) dia., 0.75” (19 mm) long 3 6* 150451 GASKET, copper 1 7*† 150694 GASKET, copper (qty 1 in kits 206925 and 206728) 3 10 165970 ROD, connecting, 5 1/4” (133 mm) long 1 12 165971 TUBE, riser, 11–11/16” (297 mm) long 1 13 160939 BODY, piston 1 14 160940 COUPLING, piston 1 15* 160941 BEARING, press fit, brass 1 16* 160942 SEAL, piston; PT...

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