MAINTENANCE PLATFORM, TYPE B-1
PART NO. 50-19080 NSN 1730-00-390-5618 EIC: NA
CONTROLS AND INDICATORS
Hand Pump, Fluid Strainer, and By-Pass Valve.
Table 1. Maintenance Platform Controls and Indicators.
Hand Pump Handle
When actuated by the handle, the hydraulic hand pump draws hydraulic
└uid from the reservoir and forces the └uid into the hydraulic cylinder
assembly causing the upper structure to rise.
The by-pass valve is a needle-type valve and is located under the
hydraulic hand pump. When the by-pass valve is in the closed position,
it locks the └uid under pressure in the hydraulic cylinder assembly.
Opening the by-pass valve allows the └uid from the cylinder assembly
to by-pass the hand pump and return to the reservoir, causing the upper
structure to lower.