tailieunhanh - Cooling and Lubrication System Maintenance Part 8

Tham khảo tài liệu 'cooling and lubrication system maintenance part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 3403. Sampling Requirements and Techniques a. Sampling Requirements. Marine Corps Technical Instruction TI-4731-14 provides a list of all equipment and components of equipment that are to participate in the Joint oil Analysis Program. Currently all engines and transmissions for 5 ton tactical vehicles and the LVS front power unit are Included in the program. Sampling is conducted every 90 days or when a special sample is required table 3-2 tells you when special samples are required. All samples that are submitted as special samples must be marked special with the reason for the submission indicated. Table 3-2. Circumstances Requiring a Special oil Sample Obtain a special sample WHEN. the laboratory requests a special sample. there is indication of Internal damage to the engine or transmission due to an oil related failure. your maintenance supervisor tells you to change the oil. you have performed oil services due to changes in environmental conditions. you have done an oil change BEFORE. scheduled services. performing maintenance on the engine or transmission. This Includes the repair replacement or installation of any oil lubricating part or assembly. removing the engine or transmission regardless of the reason . anticipated abnormally severe operating conditions. you have done oil changes AFTER. maintenance on the engine or transmission. overhaul or replacement of the engine or transmission. 3-45 As you can see this covers just about all occasions. The bottom line is to use the program and know what components need sampling. Now what publication lists all the equipment that participate in the JOAP If you said TI-4731-14 1 you re correct. This publication also provides detailed instruction on sampling methods and the overall Joint Oil Analysis Program. b. Sampling Techniques There are two methods used to obtain oil samples the oil sampling pump fig 3-31 and the sampling valve method fig 3-32 . Fig 3-32. Oil sampling valve. The sampling valve method is best. It .