MTU 12 V 4000 M63 Specifications download pdf (Page 99)

Preservation speciﬁcations 97

As a consequence of the resulting pressure drop,

the envelope must shrink into light contact with

the engine. Excessively heavy contact must be

avoided as friction damage could result during

transportation.

Note:

When the air is extracted, the air humidity is eliminated, thus ensuring a favorably low initial level of

moisture in the packaging. Extraction of the air also veriﬁes that the envelope is free of leaks. If the

envelope is not adequately sealed, it will re-expand within 30 minutes.

A leak can be found by pressurizing the envelope and repaired by welding.

Special packing checks

Humidity check

Humidity within the envelope must be checked regularly every 3–4months(→ Page 90). The results of the

check must be entered on the monitoring sheet (→ Page 99). I f the engine is still under warranty, return the

monitoring sheet (→ Page 99) to MTU Friedrichshafen GmbH after putting the engine into service.

Attention!

When checking the special packing, ensure that the laminated aluminum foil is not damaged, exercise

great care when opening the transportation box (if provided).

The condition of the laminated aluminum foil is to be checked minutely at every customs, stock or storage check.

Protection against corrosion is not guaranteed if the laminated aluminum composite foil is damaged.

Desiccant replacement

Open the upper section of the envelope and remove the old desiccant. Place the same amount of fresh desiccant in

the upper section of the envelope (→ Page 95). Re-weld the envelope and extract the air (→ Page 96).

Repair of special packing

If the laminated aluminum foil is damaged, the damaged area can be cut out and a new section welded into

position. If repairs have to be carried out, the envelope must be stocked w ith fresh desiccant (→ Page 95) and

the air must be extracted again (→ Page 96). Incorrect repair, e.g. using adhesive tape, is not permissible,

as the partial vacuum in the envelope cannot be maintained. In order to ensure correct repair, the speciﬁed

packing materials (→ Page 90) and the manual welding unit ( → Page 98) must be used.

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MTU 12 V 4000 M63 Specifications Page 99