TM 10-3930-675-20-2 0194 00-5 GENERAL MAINTENANCE INSTRUCTIONS - CONTINUED 0194 00 TAGGING WIRES AND HOSES - CONTINUED 2. Whenever possible, identify electrical wires with the number of the terminal or wire to which it connects. If no markings can be found, tag both wires or wire and terminal, and use the same identifying mark for both. If you cannot tag a wire because it must fit thru a small hole or you cannot reach it, write down the description of the wire and the point to which it connects or draw a simple diagram on paper. Be sure to write down enough information so you will be able to properly connect the wires during assembly. If you need to identify a loose wire, look for identifying number near end of the wire, stamped on a permanent metal tag. Compare the number to wire numbers on the appropriate electrical schematic. 3. Identify fuel, oil, coolant, and hydraulic lines when you are taking off more than one line at the same time. Mark tags with points to which lines and hoses must be connected. If it is not obvious which end of a line goes where, tag each end of the line. 4. Identify and tag other parts as required by name and installed location. LINES AND PORTS To keep dirt from contaminating fluid systems when removing and installing fuel, oil, coolant, and hydraulic lines, per- form the following steps: a. Clean fittings and surrounding area before disconnecting lines. b. Cover, cap, plug (Item 4, WP 0203 00) or tape lines and ports after disconnecting lines. When these are not avail- able, use plastic bags and rubber bands, clean rags (Item 22, WP 0203 00), duct tape (Item 29, WP 0203 00) or other similar materials to prevent dirt from entering system. c. Ensure that new and used parts are clean before installing. d. Wait to remove cover, cap, plug or tape from lines and ports until just before installing lines. HYDRAULIC HOSE CONNECTION PROCEDURES 1. Always use new o-rings where applicable. O-rings should always be installed wet. Coat o-ring with lubricating oil (Item 19, WP 0203 00). 2. The following tables identify and cross reference various o-rings found on the RTCH by dimensions and part numbers. These o-rings are available in a kit. The complete o-ring kit is available from: Kalmar RT Center LLC, 4734 Broom Street, San Antonio, TX 78217, Tel. 1-800-558-7232, 1-210-599-3478, fax 1-210-599-4009. Table 1. Boss Type O-Rings. DIMENSIONS (I.D. x W) SAE No. KRTC P/N QTY PER KIT 0.351 x .072 J515-4-1 12J1038 10 0.468 x .078 J515-6-1 12J1039 10 0.644 x .087 J515-8-1 12J1040 10 0.755 x .097 J515-10-1 12J1041 10 0.924 x .116 J515-12-1 12J1042 10 1.171 x 0.116 J515-16-1 12J1043 5 1.475 x 0.118 J515-20-1 12J1044 5 1.720 x 0.118 J515-24-1 12J1045 5 2.337 x 0.118 J515-32-1 12J1046 5