ME Low Speed High Torque Motor - Eaton

1 ME Low Speed high Torque MotorShaft Seal Replacement2 Eaton Hydraulics ME Low Speed high Torque Motor E-MOPI-TS005-E June 2004 Preparatory Work1. Preparatory Worka) Choose a clean workingarea. A parts storage boxis required. b) Clean all tools and partsrequired for the work priorto the replacement . c) Clean the exterior of themotor. d) Remove dirts, oilsattached on Motor shaftand oil seal ) Wire-brush the paints onthe mating area of casingor ) Remove the shaft key anddress out scores, burrsand sharp edges on keygroove. g) Before disconnecting pip-ings, clean the port area. h) All ports must be pluggedto avoid ReassemblingProcedureClean the new oil seal andO-ring and fit them in thefollowing procedure after theold ones are removed.(See Figs. 2 and 3.)a) Fit the seal and O-ring onend cover. In case ofME750A and ME850, O-ring is fitted into thegroove on the ) Grease the O-ring as fittedand the lip of oil seal andplace the end cover onthe casing.

2 Take care thatthe seal lip does not con-tact the edge of keygroove. c) Fit the securing bolts withwashers and tighten themto the Torque tightening Torque andbolt size for each moresize are listed in the Table1. Apply LOCTITE (#222purple) if available afterdegreasing the DisassemblingProceduresa) Unscrew and remove theend cover bolts. b) Place a screwdriver underthe lip of the end coverand carefully lever thecover out of the casing. c) Using a driver, remove theshaft seal. d) Remove O-ring on the endcover or on the casing(incase of ME750A andME850).e) During the works of b-dabove, shims placed onthe cup of taper rollerbearing might be takenonto the end cover whenit is removed. Take carethat any of shims are ) Examine the seal runningarea on the shaft anddress out any scores witha fine oil stone. Duringthis work, cover the motorto avoid getting dirt intothe Motor . g) Dress out any scores orburrs on O-ring groove, oilseal housing etc.

3 H) Cleanse the removed endcover, bolts etc. withclean kerosene and drynaturally or by a ) Take utmost care allthrough the above workthat no dirt enters themotor because the endcover is Shaft Seal ReplacementME100, ME150, ME175,ME300, ME350, ME600A,ME750A, ME850,ME1300A, ME3100,MK300, MK600 Stand the Motor verticallywith shaft uppermost (seethe Figs. 2 and 3) and startthe disassembly followingthe procedures describedbelow (the Motor must beplaced securely);Fig. 1. Motor AppearanceServicing in the field is confined to the replacement of the Motor shaft oil seal and to renewal of the completemotor unit. All servicing must be carried out in a clean working area, the Motor is a precision hydraulic assem-bly and must be treated as such. Any further disassembly work beyond repairing the ME Motor shaft seal mayresult in a loss of product warranty. For more detailed product repairs, please contact an authorized EatonService Center.

4 3 Eaton Hydraulics ME Low Speed high Torque Motor E-MOPI-TS005-E June 2004 Table 1NO. OFTIGHTENING TIGHTENINGMOTORBOLTPART (kgf-m) , socket head cap screw M 8x20DW0023A-0204322ME150 Hex, socket head cap screw M , head boltM , head boltM 12x35DW0017A-0358858ME750 AHex, head boltM 12x30DW0017A-0308858ME850ME1300 AHex, head boltM 12x25DW0017A-0258858ME3100 Hex, head boltM 14x35DW0018A-035121394MK300 Hex, socket head cap screw M , socket head cap screw M 14x40DW0026A-040161394 Fig. 2. Fitting of End CoverME100, ME150, ME175,ME300, ME350, ME600A,ME1300A, ME3100, MK300,MK600 Section of End Cover4 Eaton Hydraulics ME Low Speed high Torque Motor E-MOPI-TS005-E June 2004 Fig. 3. Fitting of End CoverME750A, ME850 Fig. 4. Motor Appearance3. Shaft Seal ReplacementME1900, ME2600, ME4100 After the preparatory workas described on page 2,item 1 is done, stand themotor vertically with theshaft the Motor inthe following of End Cover5 Eaton Hydraulics ME Low Speed high Torque Motor E-MOPI-TS005-E June 2004ME1900, ME2600,ME4100 DisassemblingProcedurea) Unscrew and remove thebearing housing, bolts andseal washers.

5 Make align-ment marks on the bear-ing housing to ensure re-assembly in the samerelationship. (See Fig. 5) b) Fit two M10 eyebolts intothe two threaded holes inthe bearing a suitable hoist andlift the housing squarely-out of the Motor the Motor with apiece of clean cloth toprevent dirt from enteringthe body. c) Using a driver remove theshaft oil seal. d) Remove the O-ring on thebearing ) Take care that the bearingcup and pre-load shimsare not disturbed duringthis ) Examine the seal runningarea on the shaft anddress out any scores witha fine oil stone. g) Clean out the oil sealrecess and O-ring grooveand ensure any sharpedges or roughness areremoved. h) Cleanse, with cleankerosene the removedbearing housing and bolts,dry naturally or by a Reassembly ProcedureClean the new oil seal andO-ring and fit them in thefollowing ) Fit the oil seal and O-ringon the bearing care that O-ring orseal lip are not bruised.

6 B) Oil the seal lip and O-ringand lower the housingsquarely over the shaftand into the Motor care that the seal lipdoes not contact theedges of the shaft keyway or splines. Use asimple sleeve for this pur-pose. (See Fig. 5)c) Use new seal washers forhousing bolts and tightenthem. Take the followingcares in doing this work(See Fig. 5): (i) The bolts used differ ineach Motor size, andeach bolt must be fittedat the designated posi-tion. The bolt sizes tobe used and therequired tighteningtorque is listed on page6, in Table 2. The fittingpositions for each boltare shown in Fig. 6.(ii) The tightening torquemust be confirmed on atorque wrench.(iii) Apply LOCTITE (#222,purple) on degreasedbolt 5. Fitting of BearingHousingSection of Bearing Housing6 Eaton Hydraulics ME Low Speed high Torque Motor E-MOPI-TS005-E June 2004ME1900, ME2600,ME4100 6. Bolt LocationsTable 2NO. OFTIGHTENING TIGHTENINGMOTORBOLTPART (kgf-m) BoltM16x55T22117-003614101 Special BoltM16x50T22117-002214101ME2600 Hex, head boltM16x70DW0019A-070814101 Hex, head boltM16x60DW0019A-060414101ME4100 Hex, head boltM16x70DW0019A-070814101 Hex, head boltM16x65DW0019A-0652141017 Eaton Hydraulics ME Low Speed high Torque Motor E-MOPI-TS005-E June 2004 Required Partsand ToolsA.

7 replacement PartsThe parts required for replacement are listed in Table 3. SealKit No. is also in the Table. Please use Seal Kit No., whenyou order Tools Torque wrench [capability3~14 kgf-m (20-110lbf-ft) Torque ] Eyebolt M10 2 pcs. Driver Special sleeve (forshaft)..preferable Lithium grease LOCTITE (#222, purple) Hammer (copper head) Box wrench (for M10,M12, M14, M16) or Hexwrench (for M8, M10,M14) The quantity for oil seal and O-ring is one each. The seal material for the standard Motor is nitrile rubber. In case phosphate ester is used as fluid viton seal must be inquire with us in such a 3 SEALSEALOIL SEALO-RINGWASHERWASHERSEALMOTORPART TYKIT O-RingDZ2048 AME850DW0050A-075T20160DZ2050 AME1300 ATCN85-110-13 IAG195DZ2138 ADW0050A-085DW0003B-195DZ2138 AME1900 MHSA105-135-141/4 x 11 1/2 x 12M168DZ2054 ADW0052A-105DW0005B-079DW0034A-168DZ2054 AME2600 MHSA120-150-141/4 x 12 1/2 x 13M1612DZ2056 ADW0052A-120DW0005B-081DW0034A-01612DZ20 56 AME3100 MHSA105-135-14 Special O-RingDZ2057 ADW0052A-105DK0018 ADZ2057 AME4100 MHSA135-165-141/4 x 15 x 15 1/2M1610DZ2059 ADW0053A-135DW0005B-086DW0034A-01610DZ20 59 AMK300 TCN55-78-12 Special O-RingDZ2060 ADW0050A-055DA0189 ADZ2060 AMK600 TCN70-95-13 Special O-RingDZ2061 ADW0050A-070DB0078 ADZ2061A 2004 Eaton CorporationAll Rights ReservedPrinted in USAD ocument No.

8 E-MOPI-TS005-EJune 2004 Eaton14615 Lone Oak RoadEden Prairie, MN 55344 USATel: 952 937-9800 Fax: 952 1D-76532 Baden-BadenGermanyTel: (49) 7221 682-0 Fax: (49) 7221 682-788 Eaton20 Rosamond RoadFootscrayVictoria 3011 AustraliaTel: (61) 3 9319 8222 Fax: (61) 3 9318 5714