MAINTENANCE PLATFORM ADJUSTABLE, AIRCRAFT
(TYPE B-4A) PART NO. 54J6345 NSN 1730-00-294-8883
THEORY OF OPERATION
The maintenance platform consists of a main base and a platform surface. The platform is located above and
connected to the main base by a scissors assembly.
A hand operated hydraulic pump is used to transfer fluid from a reservoir to a piston assembly, causing the piston
The piston assembly is connected to the scissors and as it extends, causes the platform to raise
When the platform is raised to the desired height, it is manually locked with lock pins.
The platform is lowered to the down position by manually opening a release valve on the pump, allowing the fluid
to return to the reservoir and the piston to retract.
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