Repair of Piston Rod Damage to Prevent Rod Seal Destruction (Using Weld).

TM 5-3835-222-BD

8-12.3 Repair of Piston Rod Damage to Prevent Rod Seal Destruction (Using Weld).

Limitations:

Welding equipment is needed for this repair.

Cylinder rod seals may not seal over repaired section of rod, resulting in some leakage.

Dirt may be carried into cylinder at damaged rod section, resulting in fluid contamination.

Rod may be weakened due to contamination.

CAUTION

Caution must be used to prevent hydraulic fluid fire

which could cause further damage to the equipment.

Personnel/Time Required:

1 soldier 1.0 hr.

Materials/Tools:

Welding Equipment

Tool Kit

Sharpening Stone

Procedural Steps:

a. Remove all hydraulic fluid from around area to be welded.

b. Fill damaged area in rod with weld material.

c. File welded area down to original rod diameter.

d. Rub repaired area with cloth or rag to check for snags and sharp points.

e. Repeat steps c and d until no snags occur.

f. Wash metal filings from rod using hydraulic fluid.

g. 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.

h. 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.

i. 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.

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

using standard maintenance procedures.

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