M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
17-42. CRANE CYLINDER TEST (CONT).
a. Test Setup.
Pressures of 2000 psi (13.8 mPa) and 2500 psi (17.2 mPa) are used during test.
Hoses, fittings, etc., must be of sufficient safety factor to prevent equipment
damage or personal injury.
Install quick-disconnect in piston side port only. Rod side port must not be
blocked. Damage to cylinder and/or personal injury could result.
Proper holding valve must be installed prior to test. Removal or replacement of
holding valve after test constitutes an untested cylinder assembly.
Determine piston side and rod side ports of cylinder (1) and plug remaining ports.
Install hose (2), tee (3), quick-disconnect (4), and hose (5) onto piston side port of cylinder (1).
Install hose (6), tee (7), and hose (8) onto rod side port of cylinder (1).
Install bleeder valve (9) and hose (10) onto tee (3).
Install bleeder valve (11) and hose (12) onto tee (7).
Route hoses (10) and (12) into suitable container.
Connect hoses (5) and (8) to test valve of tool outfit.