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MAULE AEROSPACE TECHNOLOGY, INC.
MAINTENANCE MANUAL
FOR
M-4-180V
22
Rev. A
4/13/16
4. Pull out cylinder head and spring assembly.
5. To remove spring take all nuts off of strut shaft and press piston upward to free
bolts for removal. Remove bolts, and piston will come out of end of shaft.
6. Replace worn parts, weak spring, etc. The “O” ring on the strut shaft and on the
cylinder head should be replaced at this time also.
B. Assembly of Oleo Strut:
1. Reassembly is the reverse of steps 5 and 6.
2. Fill cylinder 3/4 full of API GL-4 or GL-5 85W-140 gear oil. Fill strut shaft full of
same gear oil as cylinder.
3. Quickly align cylinder head bolt holes with cylinder bolt holes and insert spring
assembly allowing excess oil to escape.
4. Install cylinder head bolts, filler plug and safety. Torque bolts to 100-140 in.-lb.
5. Reinstall strut on airplane being careful to get the spacers in at the top attaching
bolt.
6. Work airplane up and down on strut and check for oil leaks.
LANDING GEAR LEGS AND AXLE:
The landing gear is made of chrome molybdenum steel (4130) and has an aluminum skin
(2024-T3).
These need no maintenance other than inspection for corrosion. Their hinges should be
lubricated at frequent intervals using a light engine oil.
MAIN WHEELS AND BRAKES:
See Equipment Lists for items installed and options.
To change a tire, follow these steps:
1.
Chock opposite main wheel and tailwheel.
2.
Raise wheel with a light scissors jack placed about 2” inboard of brake mount plate. (See
page 12 for reference)
3.
Remove brake calipers by removing two (2) brake bolts.
4.
Remove hub cap, cotter pin and retainer nut.