MIL-P-7858, MILITARY SPECIFICATION: PUMP, HYDRAULIC, POWER DRIVEN,FIXED DISPLACEMENT (04-APR-1952) [CANCELLED W/ NO S/S DOCUMENT]

MIL-P-7858, MILITARY SPECIFICATION: PUMP, HYDRAULIC, POWER DRIVEN,FIXED DISPLACEMENT (04-APR-1952) [CANCELLED W/ NO S/S DOCUMENT]., This specification covers the requirements for 1,500 and 3,000 psi fixed displacement power-driven hydraulic pumps