TM 55-1945-205-10-4 0099 00 5 0099 00 1 Before .1 Light Tower (Cont’d)  11. Check all accessible fuse terminal blocks and connections to see that they are securely connected and supported, that insulation is not cracked or chafed and that conduit and shielding are secure and in good condition. If terminal blocks are not securely connected or supported, insulation is cracked or chafed or shielding is damaged, contact unit maintenance. WARNING 2 Before .4 Light Tower Engine    1. Check the engine oil level. a. Verify that it registers FULL on the dipstick. Engine must be cool when reading level. If hot, allow to cool for 20 minutes. If necessary, add Lubricating Oil, Internal Combustion Engine, Grade 15W40 to achieve desired level. DO NOT OVERFILL. Use a rag to wipe any spillage that may occur. b. Make a visual inspection for oil leaks around the filters and the external oil lines. If oil leaks are found, contact unit maintenance. Class III oil leaks are found. Table 1.  Preventive Maintenance Checks and Services. (Continued) ITEM NO. INTERVAL MAN- HOURS ITEM TO BE CHECKED OR SERVICED PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 1. OIL LEVEL GAUGE 1 A A:  ENGINE OIL LEVEL WITHIN THIS RANGE IS PROPER