2. Fill tank with water.
Cleaning Solvents are flammable and
moderately toxic to skin, eyes and
respiratory tract. Eye and skin
Welding operations produce heat,
protection required. Good general
highly toxic fumes, injurious
ventilation is normally adequate.
borne particles. Welding gog-
gles, with proper tinted lenses,
apron or jacket and welder's
Clean components with unapproved
boots are required.
cleaning solvent, and dry thoroughly. En-
sure that all particles trapped on head of
magnetic plug are removed.
3. Repair tank by welding.
4. Repair tank with large holes by
welding metal patches to tank.
a. Inspect tank for leakage by air test-
ing as follows:
5. After welding, drain water from
1. Connect a suitable air supply to
tank, and plug all openings.
6. Pressure test tanks for leakage
2. Submerge tank in water, and
apply air pressure of 1.5 PSI. Check for
b. Repair damaged threaded holes by
b. Inspect liquid level gauge by holding
gauge in hand and twisting handle in a
clockwise direction. The rubber seal ring
should swell slightly as handle is twisted.
If rubber seal ring does not swell, replace
liquid level gauge.
hydraulic tank in the reverse order of index
c. Inspect magnetic plug for its capa-
bility to pick up metal particles. If it has
lost its magnetic capability, replace mag-
d. Inspect threaded holes in tank for
dam aged threads.
hydraulic tank in the reverse order of in-
dex numbers assigned.
8 - 9 0 . REPAIR.
a. Repair leakage or holes in tank as
b. Refer to Operator and Organizational
Maintenance Manual, and service hydraulic
1. Steam clean tank.