TM 5-3805-255-14
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CLEANING AND INSPECTION
000123
Clean and inspect all parts IAW General Maintenance Instructions (WP 0019).
END OF TASK
ASSEMBLY
000123
NOTE
Lubricate all parts with lubricating oil (WP 0018).
1. Slide cylinder end cover (Figure 2, Item 20), rod seal (Figure 2, Item 17) and rod wiper (Figure 2, Item 18) on
rod (Figure 2, Item 25).
2. Lubricate rod (Figure 2, Item 25) and cap rod seal and slide cap (Figure 2, Item 15) onto rod (Figure 2, Item
25).
3. Install two new O-rings (Figure 2, Item 24) and four new backup rings (Figure 2, Item 23) in grooves in piston
end of rod (Figure 2, Item 25).
4. Install two new O-rings (Figure 2, Items 12 and 13) on cap (Figure 2, Item 15).
5. Install new O-ring (Figure 2, Item 10) on second piston half (Figure 2, Item 11).
6. Install new O-ring (Figure 2, Item 4) on first piston half (Figure 2, Item 3).
7. Install two new seals (Figure 2, Items 6 and 8) and new wear rings (Figure 2, Items 5 and 9) on piston halves
(Figure 2, Items 3 and 11).
8. Slide first piston half (Figure 2, Item 3) having tapped holes on rod (Figure 2, Item 25) just past lockring groove.
9. Slide second piston half (Figure 2 Item 11) on rod (Figure 2, Item 25), almost to lockring groove.
10. Insert two lockring halves (Figure 2, Item 7) between piston halves and seat in rod lockring groove.
11. Align bolt holes in piston halves (Figure 2, Items 3 and 11) and seat in rod lockring groove.
12. Align bolt holes in piston halves (Figure 2, Items 3 and 11) and lockring halves (Figure 2, Item 7).
13. Insert two new bolts (Figure 2, Item 2) and start them into tapped holes in inner piston half (Figure 2, Item 3).
Repeat procedure for second lockring half. Install six new remaining bolts (Figure 2, Item 2) and tighten eight
bolts evenly to 70 lb-ft (95 Nm).
NOTE
Do not damage wear rings or seal assemblies.
14. Coat assembled piston halves (Figure 2, Items 3 and 11) with lubricating oil and carefully start piston and rod
assembly in cylinder (Figure 2, Item 1).
NOTE
Be careful not to damage O-ring and backup ring when installing cap assembly. Be sure
O-ring and backup ring in cap are properly positioned, i.e., O-ring inside, backup ring
outside.
15. When piston assembly has fully entered cylinder, carefully push cap assembly (Figure 2, Item 15) in cylinder
(Figure 2, Item 1).
16. Install segmented lockring (Figure 2, Item 14) in cylinder recess. If needed, use grease to hold lockring
segments in place.
17. Install new cord ring (Figure 2, Item 16) in boom cylinder (Figure 2, Item 1).
18. Install new O-ring (Figure 2, Item 19) in cap recess (Figure 2, Item 15).
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