SECTION V: TROUBLESHOOTINGTM 9-2350-256-20H If hoist winch creeps or fails to hold load, adjustbrake. Open door of U-35 winch center right floorplate (see paragraph 9-4). Loosen locknut (seeparagraph 11-7) and tighten hoist winch adjustingscrew clockwise as far as it will go.Back offadjusting screw one full turn. Hold adjusting screwin position and tighten locknut. lf brake fails to holdload, go to step I. If brake holds load but continuesto creep, notify Direct Support maintenance.I Remove hydraulic brake cylinder hose No. 28 andinspect for restriction (see paragraph 12-1). Replacerestricted or damaged hose (see paragraph 12-1). Ifno hose restriction or damage exists and brake stillfails to hold load, go to step J.Do not attempt to loosen or tightenhydraulic fittings or lines when system ispressurized. Severe injury or death topersonnel may result.J If quick disconnect between hydraulic line, hosenumber 22, and hydraulic line hose number 22A isdirty or damaged, clean or replace quick disconnectas necessary (see paragraph 12-1). If no quickdisconnect damage is present and hoist winch stillcreeps or fails to hold load, notify Direct SupportMaintenance.HOISTING BOOMHoisting boom does not operate.Do steps A through F.Hoisting boom creeps.Do steps J and K.Hoisting boom operates with difficulty.Do steps C through J.Boom stayline cables become slack during live boomoperation.Do step L.NOTEThe hoistingboom troubleshootingprocedures are performed using the mainhydraulic system as a fluid power source. Ifhoisting boom operates using mainhydraulic but not auxiliary hydraulic,troubleshoot auxiliary hydraulic system. Ifhoisting boom operates using auxiliaryh y d r a u l i c b u t n o t m a i n h y d r a u l i c ,troubleshoot main hydraulic system.2 - 4 5
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