MIL-D-3464E Desiccant, Silica Gel with Humidity Indicator

SUBTASK 72-00-00-550-053 Fit the VMI Bag or Storage Cover to Transportation Stand and put Desiccant into the Bag/Cover

1. The type of bag/cover to be installed.

   1. Engine build-up unit (EBU) and spareable engine have IAE 6F10078 MI bag 1 off or IAE 6R19563 MI bag 1 off or IAE 6R19565 MI bag 1 off installed.

   2. Demountable power plant and quick engine change unit (QEC) have IAE 6F10287 Storage cover 1 off or IAE 6R19562 MI bag 1 off or IAE 6R19564 VMI bag 1 off installed.

2. Do TASK 71-00-00-560-001 (REMOVAL-001), move the engine from the transportation stand to the support pedestals.

3. Make sure the bag/cover is clean.

4. Remove the front and rear support brackets.

   1. Remove the eight bolts and the eight washers that attach the front support brackets to the transportation stand.

   2. Remove the front support brackets and put them on a suitable surface.

   3. Remove the eight nuts and the eight bolts that attach the rear support brackets to the transportation stand.

   4. Remove the rear support brackets and put them on a suitable surface.

5. Position the bag/cover on the transportation stand. Align the holes in the bag/cover with the holes on the transportation stand.

6. Install the front and rear support brackets.

   1. Attach the front support brackets to the front support struts with the eight bolts and the eight washers.

   2. Tighten the bolts to safety.

   3. Attach the rear support brackets to the rear support struts with the eight bolts and the eight nuts.

   4. Tighten the bolts and the nuts to safety.

7. Make sure the bag/cover is clean.

8. Do TASK 71-00-00-560-002, move the engine from the support pedestals to the transportation stand.

9. 

   CAUTION

   WHEN THE DESICCANT CONTAINERS ARE OPENED, IT IS IMPORTANT THAT THE DESICCANT IS PUT INTO THE STORAGE COVER AS QUICKLY AS POSSIBLE AND THE COVER IS CLOSED, IN ORDER TO MINIMISE EXPOSURE TO THE ATMOSPERE.

   Put CoMat 02-076 HUMIDITY INDICATOR CARD in the pocket supplied on the bag/cover.

10. Put the necessary quantity of CoMat 02-075 DESICCANT (DEHYDRATING AGENT) for the condition of storage. The quantity of desiccant is shown in step K.

11. NOTE

    1. Ensure that the desiccant does not touch the power plant.

    2. The quantities of desiccant quoted in the tables below are calculated based on the inspection frequency described in SUBTASK 72-00-00-230-052. Alternative quantities of desiccant are permitted subject to an alternative humidity indicator inspection plan. Desiccant must be replaced if humidity indicators show unsafe.

    Quantity of desiccant necessary for the engine storage.

    1. 

       CAUTION

       DO NOT PLACE DESICCANT IN DIRECT CONTACT WITH THE ENGINE BECAUSE THIS CAN CAUSE CORROSION.

       NOTE

       In the two tables that follow arid conditions are not more than 40 percent (monthly average) of humidity. Temperate conditions are more than the humidity of 40 percent and not more than 80 percent (monthly average). Tropical is more than 80 percent humidity (monthly average).

       Position the desiccant packages equally along the length of the engine.

    2. IAE 6F10287 Storage cover 1 off, IAE 6F18903 Storage cover 1 off, IAE 6R19562 MI bag 1 off, IAE 6R19564 VMI bag 1 off:

       STORAGE PERIOD		CONDITIONS
       (MONTHS)		ARID/TEMPERATE		TROPICAL
       3		24 lb (11 kg)		89 lb (40 kg)
       6		50 lb (23 kg)		181 lb (82 kg)
       9		75 lb (34 kg)		270 lb (123 kg)
       12		99 lb (45 kg)		360 lb (164 kg)
       NOTE At the end of each storage period the used desiccant is to be removed. If the engine is to be stored for a longer period the new specified quantity of desiccant is to be put in the bag/cover.

    3. IAE 6F10078 MI bag 1 off , IAE 6R19563 MI bag 1 off, IAE 6R19565 MI bag 1 off, IAE 6P16604 VMI bag 1 off, IAE 6P16605 VMI bag 1 off:

       STORAGE PERIOD			CONDITIONS
       (MONTHS)		ARID/TEMPERATE		TROPICAL
       3		17 lb (8 kg)		61 lb (28 kg)
       6		33 lb (15 kg)		120 lb (54 kg)
       9		50 lb (23 kg)		181 lb (82 kg)
       12		65 lb (30 kg)		240 lb (109 kg)
       NOTE At the end of each storage period the used desiccant is to be removed. If the engine is to be stored for a longer period the new specified quantity of desiccant is to be put in the bag/cover.

12. Carefully position the top half of the bag/cover over the engine. Seal the bag/cover with the lock slider that is supplied with the cover.

13. Examine the bag/cover:

    1. Torn or pierced refer to Step 1.

14. Install the front and rear freight guards to the transportations stand.