TM-9-2350-275-BD Battlefield Damage Assessment and Repair for M113 Family Download
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TM 9-2350-275-BD APPENDIX C C-3. LUBRICANTS AND HYDRAULIC FLUIDS. This section lists a few elementary characteristics of importance although there are no expedient means of measuring or predicting them. A list of basic fluids which can be used is provided in order or priority. Cautions on incompatible fluids are mentioned and a means suggested to flush the system. b. Table C-2 provides a list of basic fluids which can be used as substitutes (alternate and expedient). It is structured around the vehicle lube order. Alternate products shown are NATO equivalents to the US specifications and can really be considered primary fluids. There are no corresponding ASTM designators. The expedients are emergency only substitutions. They may cause one of three problems either individually or in combination. (1) They may not allow proper or efficient operations because of improper viscosity. (2) They may cause high wear rate because of improper viscosity. (3) They may cause seal damage or create deposits because of improper chemical composition. c. There are no established time constraints on these expedients but the shorter the time used the better. C-4. FLUSHING LUBRICANT AND HYDRAULIC SYSTEMS. a. Expedient lubricant and hydraulic fluids must be removed as soon as possible, and the system cleaned and inspected. b. For those systems using oils, flushing involves draining, refilling with the proper product, operating to insure complete circulation and when possible stable operating temperature (this usually means at least 1/2 hour), a redrain and refill. For the transmission and hydraulic system a second period of operations and a third drain and refill are needed. Installation of new filters is desirable. Filters must as a minimum be removed and cleaned. As a last resort only, operate without filters. While systems should not be disassembled to inspect seals, maintenance organizations should be prepared to replace seals that show signs of leaking. Organizations must observe seals on these systems during subsequent operations. c. For systems using grease, it is normally necessary to disassemble the system and wash the parts, especially the bearings, in a suitable solvent. The parts are then wiped dry, inspected for wear and pitting, replaced if needed and repacked with the proper product. C-3