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 TM 55-1905-223-24-2
CAUTION
Never operate the gearbox with oil below the low level mark, or above the
upper level mark. The oil level can be checked only when the propulsion
engine is shut down.
(1) Fill gearbox with the same oil as used in the propulsion engine until the oil level reaches the upper
dipstick mark. Reference LO 55-1905-223-12.
(2)
Start the engine. Refer to TM 55-1905-223-10. Check for evidence of external leakage. Secure
capscrews, fittings, and connections as necessary. Check oil dipstick and filler tube caps to see that
they are tightened securely. After 5 to 10 minutes, shut the engine down and recheck the oil level.
Add oil as necessary to bring it up to the upper dipstick mark.
NOTE
A significant amount of oil will be required to bring the oil up to the proper
level due to the initial filling of the piping system, oil cooler, and filter.
CAUTION
The first oil and filter cartridge change must be made after 100 hours of
operation. Thereafter, strict adherence to the preventive maintenance
schedule must be maintained. Failure to change the oil and cartridge at
this time could cause severe damage to the gearbox and void the
manufacturer's warranty. During the first 100 hours of operation particular
attention must be paid to the fouling indicator on the oil filter (see PMCS,
Item 4).
c.
Check water flow rate. Refer to TM 55-1905-223-10.
Section III. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
2-6. Explanation of PMCS Table. PMCS is designed to keep the equipment in good working condition. This is
accomplished by performing certain tests, inspections, and services. Table 2-1 lists items to be serviced and the
procedures needed to accomplish the PMCS.
2-7. Column Headings. The "Interval" column tells you when to perform a check or service. If needed, PMCS may be
performed more frequently than the indicated interval. The "Procedures" column tells you how to perform the required
checks and services. If your equipment does not perform as required, see Table 2-2, Troubleshooting. Report any
malfunctions or failures on DA Form 2404. In the Item Number column on DA Form 2404, record the appropriate Item
Number from the PMCS table.
2-3
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