Replace Damaged Piston Seals (Using Rope or Twine)

TM 5-3835-222-BD

m. Check that the hydraulic reservoir level is at least at the minimum operating level. If this level is

low, refer to para 8-13 and fill the reservoir as needed.

n. Operate all hydraulic subsystems (except those that may still be damaged) to remove air from the

system. Check carefully for fluid leaks. Tighten leaking fittings.

o. Check the hydraulic reservoir again to ensure a sufficient hydraulic fluid level. If this level is

low, refer to para 8-13 and fill the reservoir as needed.

p. Record the BDAR action taken. When the mission is completed, as soon as practicable, repair

using standard maintenance procedures.

8-12.5. Replace Damaged Piston Seals (Using Rope or Twine)

Limitations:

New seal may not be compatible with fluid.

New seal may not hold high pressure.

Some internal leakage may persist.

Cylinder must be removed and disassembled.

Personnel/Time Required:

2 soldiers 2.5 hrs.

Materials/Tools:

Hoist

Tool Kit

Rope (appendix C, section II, item 26)

Procedural Steps:

a. Relieve pressure of vehicle hydraulic system.

b. Remove cylinder.

c. Remove bolts holding rod end of cylinder to cylinder body.

d. Carefully slide piston-rod end assembly out of cylinder body exposing piston seals.

e. Do not allow dirt to contaminate internal parts of the cylinder.

f. Remove damaged seal(s) from piston.

g. Wrap rope or twine around piston seal groove to find necessary length.

h. Cut the rope or twine to length.

I. Wrap the rope or twine around the piston in the piston seal groove.

8-32