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a) Cutting heads shall be undamaged and have no missing or broken teeth or bits. b) Pinned or hinged wing cutters must be constructed in such a manner as to ensure overboring does not exceed limits specified in Section 5.E (3) of this exhibit. 4. Auger Tracks - Supports boring machine and provides line and grade control. a) Tracks shall be straight and otherwise undamaged with no broken welds. b) Tracks shall be constructed so as to remain rigid at joints and allow no appreciable flexing as power unit passes. 5. Jacks - Hydraulic, mechanical or manual power units providing horizontal thrust for pushing casing or carrier pipe. Shall have sufficient power to satisfactorily complete the proposed crossing according to the manufacturers recommendations. a) Hydraulic - Shall be in sound operating condition. Hoses shall not be cracked or split; all couplings and fittings shall tbe tight and entire system reasonably free from leaks. Hydraulic cylinder rods should be clean and smooth to prevent damage to cylinder seals. b) Mechanical - Includes manual and power drivers, ratchet type jacks, winch and pulley systems. All mechanical jacking systems shall be in sound operating condition with no broken welds, excessively worn parts, broken teeth, badly bent or otherwise misaligned components. All ropes, cables, clamps and other non - mechanical but essential items shall be in sound condition. c) Other- Devices of systems for providing horizontal thrust other than those previously defined in the preceding sections shall not be used unless approved for use by the Department prior to commencement of work. Consideration for approval will be made on an individual basis for each properly permitted crossing. The proposed device or system will be evaluated prior to approval or rejection on its potential ability to complete the crossing satisfactorily 07/03 16200 -5 03- 1438.A