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1-58 SERVICE ROTARY-WING  SHOCK  ABSORBER
1-58 SERVICE ROTARY-WING SHOCK ABSORBER    (Continued) - TM-55-1520-240-23-1_253

TM-55-1520-240-23-1 UH-1H/V and EH-1H Aircraft Manual
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TM 55-1520-240-23-1 1-58 SERVICE ROTARY-WING SHOCK ABSORBER    (Continued) 1-58 WARNING Moving blades can seriously injure personnel.  Make sure area around helicopter is clear of personnel before moving rotor blades. NOTE Any of the three rotary-wing shock absorbers on the aft and forward rotor heads are serviced the same way. NOTE Rotor blades must be positioned as shown to get correct reading of shock absorber fluid level. 1. Using tiedown line (1), turn rotor blades (2) so one blade is  90    to left or right side of helicopter. WARNING Prolonged oil leakage can damage finish and create a work hazard by making the fuselage slippery.  It can also affect other systems in the helicopter.  Therefore, good judgment must be used when determining allowable leakage. NOTE If oil level in sight gauge drops from full (half-way) mark to bottom of glass in  two hours  of operation, leakage is too great.  Check for source of leakage.  Repair as required. 2. Check fluid level on indicator (3) on shock absorber (4) of the positioned blade. If fluid level is within bull’s-eye (5), servicing is not required. If fluid level is below bull’s-eye, go to step 3. 3. Remove lockwire from cap (6). 4. Remove cap (6). WARNING Hydraulic fluid (E197) is a skin irritant. If fluid gets on skin, wash immediately with soap and water. 1-225







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