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QR-25 SeriesModel 350Parts ManualRecord of Change 109This manual contains important safety information and must becarefully read in its entirety and understood prior to installationby all personnel who install, operate and/or maintain this product.On-line product registration, parts ordering and warranty information is available at www.quincycompressor.comManual No. 2022205500July 2014 Edition
INTRODUCTIONTABLE OF CONTENTSThis manual provides information for the followingQR-25 Series, Model 350 (Record of Change 109)compressor versions:LLSLVDSerial Number Identification.2Ordering Replacement Parts.2Quin-Cip Lubricant.2Control Version Lhead assembly with 2 unloader towers& a hydraulic unloaderCrankcase Lubricant Capacity.2Crankshaft Groups.3Crankcase Group.4Control Version LShead assembly with 2 unloader towers, ahydraulic unloader, & a pilot valve witha check valve assemblyBearing Carrier Group.5Connecting Rod & Piston GroupsHigh Pressure.6-7Low Pressure.8-9Control Version LVDhead assembly with 2 unloader towers, ahydraulic unloader, & a pilot valve witha lockout & check valveCylinder & Head GroupsControl Versions L, LS, LVD.10Head AssembliesControl Versions L, LS, LVD. 11These compressors are aircooled, two stage, twocylinder, pressure lubricated compressors, with upto 200 PSIG continuous pressure capability (201 to350 PSI intermittent pressure capability with properconfiguration; consult factory). The Model 350 hasa 6" low pressure piston bore and a 3.25" high pressure piston bore and a 3.5" stroke and can be runat 400-940 RPM.Suction Valve Assembly.12Discharge Valve Assembly.13Unloader Assembly.14Pneumatic Unloader Assembly.15Control GroupsVersion L.16Version LS.17Version LVD.18Available options included in this manual:Pilot Valves.19-high pressure rated cylinder and head-hooded air filter-hooded air filter / silencerDifferential Setting Charts.19Suction Valve Unloader Assemblies.20Decals.20CHANGESsince previous printing dated January 2014:Gasket Set.21The bearing carrier group was redesigned witha new oil pump including an oil filter.Recommended Spare Parts.21Kits.21Typical Unit Parts List.22-23QR 3502022205500, July 2014Quincy Compressor13501 Wismann Lane, Quincy IL - 62305-3116
MODEL &SERIAL NUMBERIDENTIFICATIONQUIN-CIP LUBRICANTRefer to the chart below to order Quin-Cip-D or QuinCip compressor lubricant from your local authorizedQuincy distributor.RecordofChange No.Quin-Cip-D Lubricant(synthetic)SAE 30 (ISO 100)Quart115468QCase (12 Qts.)115438CQuin-Cip LubricantSAE 10W (ISO 32)Quart112541Q032Case (12 Qts.)112541C032SAE 20 (ISO 68)Quart112542Q068Case (12 Qts.)112542C068SAE 30 (ISO 100)Quart112543Q100Case (12 Qts.)112543C100SAE 40 (ISO 150)Quart2024601401Case (12 Qts.)2024601405Model & Serial NumberIdentification TagThe model & serial number tag is located on thehandhole plate side of the crankcase. Fill in the numbers from your compressor's tag in the correspondingspaces provided here and reference this page whenordering replacement parts.All replacement parts are to be ordered throughan authorized Quincy distributor. Insist on genuineQuincy parts only! Failure to do so may void warranty.ORDERINGREPLACEMENT PARTSCAUTION !Prompt service can be rendered on repair parts ordersif the following information is given:Refer to the QR-25 Series Instruction Manual for vital lubrication information.Item 1) the model number, record of changenumber, & serial number.Item 2) the exact part number needed. (Do notorder by item numbers.)Item 3) the exact quantity needed.Item 4) the preferred type of transportationCAUTION !Follow all safety precautions outlined in the QR-25 Seriesinstruction manual.WARNING !Do not operate this compressor without a totally enclosedbelt guard or any other required safety equipment.CRANKCASE LUBRICANTCAPACITYModel350DANGER !Air used for breathing or food processing must meetOSHA1910.134 or FDA 21 CFR 178.3570 regulations. Failureto do so may cause severe injury or death.Capacity4 qts. & 30 oz.(4.672 lit.)QR 3502022205500, July 2014Quincy Compressor23501 Wismann Lane, Quincy IL - 62305-3116
CRANKSHAFT GROUP 110629ItemNumber 0501466Descriptioncrankshaft assemblycrankshaft (N.S.S.; order 110221-001)bearing conebearing coneorifice, 1/8 nptpipe plug, 1/4 nptroll pin, 3/16 x 1.38sheave assemblysheave, 19.5", 4G, B sect., CCW (N.S.S.; order 110523X)hex. screw, 1/2-13 unc x 3.50, grade 8 (@ 90 ft.-lbs.)square nut, 1/2-13 uncflatwasher, 1/2taper keyN.S.S. Not Sold Separate@ Indicates torque value in foot pounds (dry threads)Note: For reversal of compressor rotation refer to QR-25 instruction manual.QR 3502022205500, July 2014Quincy Compressor33501 Wismann Lane, Quincy IL - 62305-3116
CRANKCASE GROUP 110628ItemNumber nkcase assemblyincludes:crankcasebearing cuppipe plug, 1/2 nptbearing adjustment shim, .005 steelbearing adjustment shim, .007 steelbearing adjustment shim, .020 steelbearing adjustment shim, .002 steeladjustment plate (.0015 / .003 crankshaft end play)hex. screw, 3/8-16 unc x 1.00, grade 5 (@ 30 ft.-lbs.)inspection plate gasketinspection plateinspection platehex. screw, 5/16-18 unc x 1.00, grade 5 (@ 12 ft.-lbs.)dipstickbreather balldrive pinflatwasher, 5/16"o"ring, 3/32 wide x .82 o.d.Maintenance PartsReplacement Adjustment Plate Assemblyincludes adjustment plate & oil seal* Quantity as required@ Indicates torque value (dry threads). Tighten multiple bolts, capscrews & hex nuts in a criss-cross or alternating pattern. Bringeach fastener to the recommended torque specification in even increments.N.S.S. Not Sold SeparateQR 3502022205500, July 2014Quincy Compressor43501 Wismann Lane, Quincy IL - 62305-3116
BEARING CARRIER GROUP 2024400160QR 3502022205500, July 2014Quincy Compressor53501 Wismann Lane, Quincy IL - 62305-3116
CONNECTING ROD & PISTON GROUP 110463(high pressure)Pip markor "T"on top of ringTOPGROOVEBe sure to staggerring ROOVE61.5521.19431.428QR 3502022205500, July 2014Quincy Compressor63501 Wismann Lane, Quincy IL - 62305-3116
CONNECTING ROD & PISTON GROUP 110463(high pressure)ItemNumber 845Descriptionconnecting rod assembly (N.S.S.; order 110804X)connecting rod (N.S.S.; order 110804X)needle bearingconnecting rod bolt, 7/16-20 unc x 3.25connecting rod bolt washerplug orificeretaining ringpiston pinpiston, HPoil ring railring spacerpiston ringlocknut, 7/16-20 unf (@ 40 ft.-lbs.)connecting rod insert (sold in pairs only; see maintenance parts)piston ringMaintenance Parts96656PRconnecting rod inserts (1 pair, standard size)* 196656-010PRconnecting rod inserts (1 pair, .010 undersize)* 1415846-011piston, hp (.010 oversize)415846-021piston, hp (.020 oversize)8168APiston Ring Set, HP (Standard) No Color Codeincludes piston rings, piston rails & ring spacer5788-010Piston Ring Set, HP (.010 Oversize) (L. Blue)includes all rings necessary for installing .010 oversize piston5788-020Piston Ring Set, HP (.020 Oversize) (Yellow)includes all rings necessary for installing .020 oversize piston5846X001Piston Assembly, HP (Standard w/ side sealer)includes ring set, piston, piston pin & retaining ring5846X002Piston Assembly, HP (Standard w/o side sealer)includes ring set, piston, piston pin & retaining ring5846X011Piston Assembly, HP (.010 Oversize)includes ring set, piston, piston pin & retaining ring5846X021Piston Assembly, HP (.020 Oversize)includes ring set, piston, piston pin & retaining ring110804XReplacement Connecting Rod Assembly (Standard)includes connecting rod assembly, connecting rod inserts & locknuts110804X010Replacement Connecting Rod Assembly (.010 Undersize)includes connecting rod assembly, connecting rod inserts & locknuts@ Indicates torque value (dry threads). Tighten multiple bolts, capscrews & hex nuts in a criss-cross or alternating pattern. Bringeach fastener to the recommended torque specification in even increments.* One pair required for each connecting rod assembly.N.S.S. Not Sold SeparateQR 3502022205500, July 2014Quincy Compressor73501 Wismann Lane, Quincy IL - 62305-3116
CONNECTING ROD & PISTON GROUP 110462(low pressure)Pip markor "T"on top of ringBe sure to staggerring gaps!QR 3502022205500, July 2014Quincy Compressor83501 Wismann Lane, Quincy IL - 62305-3116
CONNECTING ROD & PISTON GROUP 110462(low pressure)ItemNumber ng rod assembly (N.S.S.; order 6655X)connecting rod (N.S.S.; order 6655X)bushing, connecting rod (N.S.S.; order 6443SR)connecting rod bolt, 7/16-20 unc x 3.25connecting rod bolt washerretaining ringpiston pinpiston, LPring spacerpiston ringconnecting rod insert (sold in pairs only; see maintenance parts)locknut, 7/16-20 unf (@ 40 ft.-lbs.)oil ring railspringpiston ringMaintenance Parts6656PRconnecting rod inserts (1 pair, standard size)* 16656-010PRconnecting rod inserts (1 pair, .010 undersize)* 118640-010piston, LP (.010 oversize)18640-020piston, LP (.020 oversize)17527Piston Ring Set, LPincludes piston rings, piston rails, piston spring & spacer15787-010Piston Ring Set, LPincludes all rings necessary for installing .010 oversize piston15787-020Piston Ring Set, LPincludes all rings necessary for installing .020 oversize piston8640XPiston Assembly, LP (Standard)includes ring set, piston, piston pin & retaining ring8640X010Piston Assembly, LP (.010 Oversize)includes ring set, piston, piston pin & retaining rings8640X020Piston Assembly, LP (.020 Oversize)includes ring set, piston, piston pin & retaining rings6655XReplacement Connecting Rod Assembly (Standard)includes connecting rod assembly, connecting rod inserts & locknuts6655XUSReplacement Connecting Rod Assembly (.010 Undersize)includes connecting rod assembly, connecting rod inserts & locknuts@ Indicates torque value (dry threads). Tighten multiple bolts, capscrews & hex nuts in a criss-cross or alternating pattern. Bringeach fastener to the recommended torque specification in even increments.* One pair required for each connecting rod assembly.N.S.S. Not Sold SeparateQR 3502022205500, July 2014Quincy Compressor93501 Wismann Lane, Quincy IL - 62305-3116
CYLINDER & HEAD GROUP 115348-002(control versions L, LS & LVD)QR 3502022205500, July 2014Quincy Compressor103501 Wismann Lane, Quincy IL - 62305-3116
HEAD ASSEMBLIES 115343UU & 115343UU-004 *(control versions L, LS & LVD)QR 3502022205500, July 2014Quincy Compressor113501 Wismann Lane, Quincy IL - 62305-3116
SUCTION VALVE ASSEMBLY 6671X1QR 3502022205500, July 2014Quincy Compressor123501 Wismann Lane, Quincy IL - 62305-3116
DISCHARGE VALVE ASSEMBLY 6670X001QR 3502022205500, July 2014Quincy Compressor133501 Wismann Lane, Quincy IL - 62305-3116
UNLOADER ASSEMBLY 40192QR 3502022205500, July 2014Quincy Compressor143501 Wismann Lane, Quincy IL - 62305-3116
PNEUMATIC UNLOADER ASSEMBLY 40055QR 3502022205500, July 2014Quincy Compressor153501 Wismann Lane, Quincy IL - 62305-3116
CONTROL GROUP 110860(control version L)ItemNumber Qty.112334 ft.41PartNumber0-200 PSIG110827-0011642110515-0251665PartNumber201-500 ic unloader assemblytube fitting, 90 male elbow, 1/4 tube x 1/8 nptcopper tube, 1/4 o.d.tube fitting, male branch tee, 1/4 tube x 1/4 tube x 1/8 nptMaintenance Parts113225113225Hydraulic Unloader Repair Kitincludes diaphragm, stem assembly, inlet filter & fitting assembly,spring (0-200 PSIG) and spring (201-500 PSIG, red color code)Parts for Special Applications(for use with diester or phosphate ester synthetic lubricants)111110827-0031110827-0042hydraulic unloader assembly (standard, 0-200 PSIG)hydraulic unloader assembly (high pressure, 201-500 PSIG)43221/4 o.d. tubefrom receiver1QR 3502022205500, July 2014Quincy Compressor163501 Wismann Lane, Quincy IL - 62305-3116
CONTROL GROUP 2023903355(control version LS)* See page 19 for optional pilot valves that must be used with respective pressure ranges.QR 3502022205500, July 2014Quincy Compressor173501 Wismann Lane, Quincy IL - 62305-3116
CONTROL GROUP 2023903255(control version LVD)* See page 19 for optional pilot valves that must be used with respective pressure ranges.QR 3502022205500, July 2014Quincy Compressor183501 Wismann Lane, Quincy IL - 62305-3116
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This manual contains important safety information and must be carefully read in its entirety and understood prior to installation by all personnel who install, operate and/or maintain this product. On-line product registration, parts ordering and warranty information is available at www.quincycompressor.com Manual No. 2022205500 July 2014 Edition QR-25File Size: 1MBPage Count: 28
