MA Series part 1 - Coffing Hoists, Coffing Hoist Parts

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II{SPECIOR'S REPORTITEMREMARKS ILIST DEF]CIENCIES ANO RECO'IIMENDED ACTIONItfttsPEcTonsSIGNATUREDATEINSPECTEO APMOVED BY DATEFIGURE 4-5. RECOMMENDED INSPECTORS REFMTAmericrane & Hoist Corp 1-800-652-1932TABLE III. RECOMMENDED LUBRICATION SCHEDULECOMPONENT ryPE OF LUBRICANT TYPE OF SERVICE ANDFREOUENCY OF LUBRICATIONLoad Chain D-N No. H-7595 penetrating ollwith graphit€ or moly additiveAlternate-SAE 2G30 goar oilLoad Pawl Shaft,Pinion Shaft, Gearand BearinosD-N No. H-7577 greaeoPinion and G€ar Teoth D-N No. H-7593 greaseHEAVY NORMAL INFFEQUENTDaily Weekly MonthlyAt p€riodic inspection (So€ Flgure tl'f)Bottom Hook Bearino SAE 2G'30 oear oil Weekly Monthly YearlyTop Hook Wash€r SAE 20€0 gear oil Monthly Yearly YoarlyBottom Block Shattand BearingSAE 20-30 gear oil Monthly Yearly Yearly'Thi8 lubrication schedul€ is basgd on a hoigt operating in normal onvironmental condltlons. Hoists operating inadvgrs€ atmospheres conlaining excessive h€at, corrosive fumes or vapors, abrasiv€ dust, etc., should be lubricat€dmor€ irequsntly.troa
TABLE IV. TROUBLESHOOTING CHART,rw-IF DISASSEMBLY OF UNIT IS REOUIRED, REFER TO PARAGRAPH 4-13. TEST HOIST PER PARAGRAPH 2_6AFTE REASSEMBLY OR REPLACEMENT OF ANY OF ITS COMPONENT PARTS.SYMPTOM1. Hoist raises but will notlower.POSSIBLE CAUSE(S)"Brake Lock-Up" caused by shockload, leaving load on hoist forextended periods of time or removingload from hoist withoutslacking chain.2. Hoist lowers erratically. (a) Brake friction surfaces arecontaminated with oil orgrease.(bl Brake discs are worn or glazed.3. Hoist requires excessiveeffort to raise or lower.4. Hoi st wi ll mt raise orlower.5. Hoist "Free Chains"under load.6. Hoist diff icult to "FreeChain".(a) Overloading(b)Worn or danraged load chain.{c) Load Chain rusty or coatedwith foreign material.(d) Load sheave or guide portionof housing have build-up offoreign material.(e) Worn gearing or bearings.(a) Chein jammed in housing(bl Eroken load sheave(c) Broken or worn tip on handlepawl or stripped spline onbrake hub.(a) Load pawl not engaged (freechain lever sticks)(b) Brake hub not operating freely.(c) Load chain installed fromwrong side of load sheave.See 3 (b) (c) & (d)CORRECTIVE ACTIONUnlock brake following procedureoutlined on Page 3. Check applicationfor conditions suggested in"Possible cause(s!".(a) Replace brake discs and wipemating friction surfaces clean.(b) Replacebrake discs if wornexcessively. remove glaze byplacing a fine grade emorycloth on a flat surface andrubbing discs lightly on thissurface.(a) Reduce load or use correctcapacity unit.(b) Check chain per instructionson Page 5 and replace ifnecessary.(c) Clean chain with suitable acidfreesolvent and relubricate.Replace chain if badly pittedwith rust.{d) Disassemble part and clean outforeign material. Inspect andreplace parts if wornexcessi vel y.(e) Disassanble parts and checlrfor wear. Replace parts ifnecessary and relubricate.(al (b) & (c)Di sassemble per instructions.Inspect parts for wear orbreakage and replace ifnecessary.(a) Check load pawl shaft forbinding condition. Check forbroken load pawl or load pawlspri ng.(b) Check thread in brake hubor mating part for damage,corrosion or foreign material.Check for broken or irnproperlypositioned threadstop. (See Fig. 4-6)(c) Correct chain reeving.(See Fig. 4-8)See 3 (b) (cl & (d)Americrane & Hoist Corp 1-800-652-193211
Page 1 and 2: vCOFFINGOPERATING & MAINTENANCEINST
Page 3 and 4: sEcTroN IINTRODUCTION Americrane &
Page 5 and 6: operator should not engage in any p
Page 7 and 8: chain and inspect for wear at conta
Page 9: INSPECTION AND MAINTENANCE CHECK LI
Page 14: 14'Locotecutoul in rodon this side
Page 18 and 19: PARTS LIST FOR MODEL MA.15 HOISTInd
Page 20: PARTS LIST FOR MODEL MA.15-2 AND MA
Page 24: FPARTS LIST FOR MODEL MA.3O-2 AND M

MA Series part 1 - Coffing Hoists, Coffing Hoist Parts

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