ROUTINE JACK
MAINTENANCE BULLETIN
1 OF 1
The following procedures should be utilized for optimum operational characteristics
when using jacks at various temperature extremes:
1) Above 0
o
F (-18
o
C)
Use MIL-H-5606, or equal, with no further additive required.
2) At 0
o
F (-18
o
C) to -20
o
F (-29
o
C)
Use a mixture of 75% MIL-H-5606, or equal, and 25% kerosene.
3) Below -20
o
F (-29
o
C)
Use a mixture of 50% MIL-H-5606, or equal, and 50% kerosene.
Due to most company, safety, or union regulations which restrict employees from working
out-of-doors below -30
o
F (-34
o
C), there is a lack of experience beyond this point. It is
permissible, however, to increase the percentage of kerosene up to 100%. As the ambient
temperature increases, MIL-H-5606, should be added back to the system in the appropriate
mixture.
The air supply should be clean and dry. At -30
o
F (-34
o
C), the air pump will start to react
sluggishly and continue to operate less efficiently as the temperature decreases when
a normal air supply is used. The problem can be eliminated by using a dry nitrogen
source of sufficient capacity.
To ease the operation of the locknut(s) and screw extension, use "Never Freeze" by
Snap-On, or equal, and apply liberally to the thread surfaces.
RJM 102
2222 S. Third St., Columbus, OH 43207 - Tel: 614 443 7492 - Fax 614 444 9337 - email: [email protected] - www.columbusjack.com
West Coast Office: 369 Cliffwood Park St. Unit D, Brea, CA 92821 - Tel: 714 257 9412 - Fax 714 257 9385
TO PROVIDE COMPLETE INFORMATION ON SERVICING
ColumbusJACK/REGENT QUALITY GROUND HANDLING EQUIPMENT
PROCEDURE FOR WINTERIZATION OF HYDRAULIC AIRCRAFT JACKS
