16-13. HOIST MOTOR VALVE REPAIR (CONT).
The crane hydraulic system operates at oil pressures up to 3,100 psi (21,375 kPa). Never
disconnect any hydraulic line or fitting without first dropping the pressure to zero. Failure
to comply may result in serious injury or death to personnel.
Tag and mark hydraulic hoses prior to removal.
Cap and plug hydraulic hoses and tubes after removal.
Position drain pan under two hoses (1) and hose (2).
Disconnect two hoses (1) and hose (2) and remove preformed packings (3) and (4) from two fittings (5)
and elbow (6). Discard preformed packings.
Remove four screws (7), lockwashers (8), hoist motor valve (9) and two preformed packings (10) from
motor (11). Discard lockwashers and preformed packings.