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2-21107-8 Datasheet(PDF) 3 Page - Tyco Electronics |
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2-21107-8 Datasheet(HTML) 3 Page - Tyco Electronics |
3 / 5 page 408-2453 DYNA-CRIMP Hydraulic Crimping Head 69066 3 of 5 Rev B Tyco Electronics Corporation 6. INSPECTION/MAINTENANCE Make sure hydraulic pressure is released and power supply is disconnected before following inspection and maintenance procedures, unless otherwise specified in the procedure. Each crimping head is assembled and inspected before shipment. Tyco Electronics recommends that the crimping head be inspected immediately upon its arrival at your facility, and at regularly scheduled intervals, to ensure that the crimping head has not been damaged during handling. Frequency of inspection depends upon the following: care, amount of use, and handling of the head; type and size of products crimped; degree of operator skill; and environmental conditions. 6.1. Cleaning Remove accumulations of dirt and grease on the crimping head, especially in areas where dies are installed and terminals are crimped. Clean the entire head frequently with a clean, lint–free cloth. 6.2. Visual Inspection Refer to Figure 4 and proceed as follows: Figure 4 Check These Areas for Cracks Check Die Areas for Cracks Check for Excessive Wear at Pivot Pin and Latch Pin 1. With hydraulic pressure released, inspect the assembled head for nicks, scratches, and cracks. Inspect for cracks especially at the corners of the yoke and around the top of the cylinder. 2. Inspect pivot pin holes and latch pin holes for wear. Replace parts, as needed. 3. Activate power unit. Raise ram to UP position. Inspect flat and round surfaces of ram for galling (fretting or wear by friction), cracks, or oil leakage. Release pressure and make sure that ram retracts smoothly. 4. If head shows evidence of galling, cracks, oil leakage, or rough cycling, return the crimping head to Tyco Electronics for repairs. (Refer to Section 7, REPLACEMENT AND REPAIR). 6.3. Crimping Head Check-Out Procedure If the ram fails to return to the DOWN position after completion of a crimping cycle, the cause may be in the crimping head. To determine whether or not the trouble is in the crimping head, release pressure in the power unit. If the ram retracts, the trouble is not in the crimping head. If ram does NOT retract, refer to Paragraph 6.4. 6.4. Crimping Head Disassembly Procedure (Figure 5) Numbers in parentheses refer to Item Numbers in Figure 5. 1. If the head is attached to Hydraulic Power Unit No. 69120–[ ], release the pressure by pressing the pressure release button on the electrical control box. Hold it for several seconds. Proceed to Step 3 below. 2. If the head is attached to Hydraulic Foot Pump No. 314979–1, release the pressure in the head by pressing the return pedal on the foot pump. 3. Unscrew the collar of the coupler on the head. 4. Remove the crimping head and place it in a vise. Use a suitable material to protect the finish on the head. 5. Remove the set screw (9) that secures the head assembly to the cylinder. 6. Remove the guide lock screw (10) and loosen the guide set screw (11) enough to permit the head to be turned counterclockwise without turning the ram. 7. Turn the head sub–assembly counterclockwise to remove it from the threaded cylinder. 8. Remove the ram (5), bushing (13), and ram return spring (8). 9. Inspect for deteriorated or torn ram O–ring (6) or back–up ring (7). Replace with new parts if damaged. 10. Apply a thin film of hydraulic fluid (same type used in power unit reservoir) on the surface of the O–ring and back–up ring installed on the ram. 11. Install the ram (5), bushing (13), and ram return spring (8) in the cylinder. 12. Install the head sub–assembly on the threaded cylinder but do not tighten. DANGER |
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