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_______ (MASTINOX 6856K). IF MASTINOX GETS ON YOUR SKIN, IMMEDIATELY REMOVE IT WITH WATER. IF THIS MATERIAL GETS IN YOUR EYES, IMMEDIATELY FLUSH YOUR EYES WITH WATER AND GET MEDICAL AID. THIS MATERIAL CONTAINS VERY POISONOUS AND FLAMMABLE AGENTS WHICH CAN CAUSE INJURIES TO PERSONS.
 CAUTION: REMOVE ALL UNWANTED MASTINOX FROM ALL THE SURFACES THAT WILL BE
_______ LUBRICATED. IF YOU APPLY MASTINOX TO THE JOINTS THAT TURN, FAILURE OF THE LANDING GEAR TO EXTEND OR RETRACT CAN OCCUR.
 (a)  
ON AIRPLANES WITH GLAND NUT THAT HAS LUBE FITTINGS; apply MIL-C-11796, Class 3, corrosion preventive compound to the threads of the gland nut (12) and the outer cylinder (17).

 (b)  
ON AIRLANES WITH GLAND NUT THAT HAS PLUGS; apply BMS 3-27 (Mastinox 6856K) corrosion preventive compound to the threads of the gland nut (12) and the outer cylinder (17).

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737-300/400/500MAINTENANCE MANUAL
 CAUTION: THE GLAND NUT (12) AND THE OUTER CYLINDER (17) MAY HAVE
_______ BEEN REWORKED (OVERSIZE). MAKE SURE YOU IDENTIFY THEM AS REWORKED (OVERSIZED) AND KEPT AS A SET.
 (c)  
Install the gland nut (12) on to the outer cylinder (17).

 (d)  
Turn inner cylinder until torsion links line up.

 (e)  
Connect torsion links at apex (AMM 32-11-51/401).

 (f)  
Tighten the gland nut (12) 50 to 400 pound-feet lube torque.

 1)  Turn the gland nut to the nearest slot to allow the installation of the lockplate (1).

 (g)  
Measure the distance the gland nut (12) extends below the outer cylinder (17).

 NOTE: The dimension you will get here must equal the dimension
____ you recorded in step G.(1), within 0.01 inch.
 (h)  Measure the full stroke of the inner cylinder (16) by manually compressing then extending it.
 NOTE: The full stroke dimension should fall in the range given
____ in Figure 801, (Sheet 3). If not, do the next step that follow.
 1)  Disassemble the shock strut and look for missing parts or parts that are not installed correctly.
 (i)  
Install lockplate (1).

 H.  
Restore Airplane to Normal

 S 438-054
 (1)  
Connect hydraulic lines and electrical cable.

 S 648-055

 (2)  
Wipe exposed inner cylinder with hydraulic fluid.

 S 618-056

 (3)  
Do this task: "Service Main Landing Gear Shock Strut-Procedure II (Strut dry after repair, or airplane on jacks)" (AMM 12-15-31/301).

 (4)  
Remove tag identifying shock strut, SPARE SEALS USED.

 S 788-057

 (5)  
Pressurize hydraulic system and apply brakes (AMM 29-09-00/201 and 29-15-00/201).

 (6)  
Check hydraulic brake connections for leaks.

 (7)  
Bleed brakes.

 S 088-057
 S 218-058
 S 878-059
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737-300/400/500MAINTENANCE MANUAL
 (8)  S 588-060Do this task:  "Lower airplane" (AMM 07-11-11/201).
 (9)  S 288-061Check for leak s at gland nut.
 S 098-062

 (10)
 Remove airplane jacks.

 S 868-063

 (11)
 Close all landing gear circuit breakers on P6 panel and remove all DO-NOT-CLOSE tags.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 MAIN GEAR UPPER DRAG STRUT - REMOVAL/INSTALLATION
　
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