Mycom 4M, Reciprocating compressor, Open, 4 Cylinders
Use this catalogue to identify the spare parts you need to repair your compressor. The OEM catalogue is crossreferenced with our spare parts database, matched items are highlighted. Some of our existing spare parts may not be shown because our database is incomplete (e.g. missing OEM P/N), or because we sell the items separatelly (typical example is the piston-connecting rod assembly). If you have any doubt please ask us.
All OEM manufacturer's names, part numbers, diagrams, products description and information are provided for reference and identification purposes only, and it is not implied that any part listed is the product of the OEM manufacturer.
| Item num. | Ralco P/N | OEM P/N | Description (from OEM manufacturer) | Add | |
|---|---|---|---|---|---|
| 1 | CR00102MMM04 | Crankcase (4M). | |||
| 2 | CR00202M04 | Crankshaft (4M). | |||
| 3 | CR00300B12 | Drag crank (Same as 12WB). | |||
| 4 | CR00400M | Mechlock. | |||
| 8 | CR00802M | Main bearing head. | |||
| 9 | GKTMYM009 | CR00900M | Main bearing gasket. | ||
| 10 | NB111016075 | Hexagon head bolt, main bearing head (M16x75-10.9). | |||
| 12-1 | BRGMYM010 | CR01200M1 | Main bushing (pump side). | ||
| 12-2 | BRGMYM001 | CR01220MS | Main bushing (seal side). | ||
| 13 | DWLCM5X10 | NE3205010V | Spring pin, thrust washer (5x10AV). | ||
| 14 | SKTMYM000 | CR01400M | Oil filter assembly (20µm). | ||
| 14-1 | FLRMYM000 | CR01410M | Element assembly, oil filter. | ||
| 14-2 | RNG75558 | PAAS568222 | O-ring, oil filter element (AS568-222). | ||
| 14-3 | RNGMYS160049 | PA12090 | O-ring, oil filter case (JISB2401 G90). | ||
| 15 | RNGSTS406 | PA12025 | O-ring, oil filter head (JISB2401 G25). | ||
| 16 | NB35412050 | Hexagon socket head cap screw, oil filter (M12xL50-12.9). | |||
| 16-1 | ND11012 | Plane washer for item No.16 (M12). | |||
| 20 | NF0670303 | Service valve For oil drain/initial oil charge, gas purge, connection for suction/discharge/oil pressure (R3/8xRc 3/8). | |||
| 22 | VSGMYA010 | NL152SFX | Oil pressure regulating valve (Same as WA, WB (R3/4)). | ||
| 23 | CR02300M | Bearing head. | |||
| 24 | GKTMYM024 | CR02400M | Gasket, bearing head. | ||
| 24-1 | RNGMYS400433 | PA12200 | O-ring, bearing head (JISB2401 G200). | ||
| 25 | NB111016065 | Hexagon head bolt, bearing head (M16x65-10.9). | |||
| 26 | CR02600M | Shaft seal cover. | |||
| 27 | GKTMYM027 | CR77200M | Gasket, shaft seal cover. | ||
| 28 | NB111012075 | Hexagon head bolt, shaft seal cover (M12x75-10.9). | |||
| 29 | CR01210M | Thrust washer (pump side). | |||
| 29-1 | CR02900M | Thrust roller bearing. | |||
| 32 | SELMYM000 | CR03200MH | Mechanical seal assembly (Type: MM-1 HNBR). | ||
| 46 | CR04500M | Hand hole cover (Window less). | |||
| 47 | GKTMYM047 | CR04700M | Gasket, hand hole cover. | ||
| 48 | NB111016075 | Hexagon head bolt, hand hole cover (M16x75-10.9). | |||
| 49 | CR04900M | Head cover (air cooled) (Air cooled specification). | |||
| 50 | CR04900MW | Head cover (water cooled) (Water cooled specification). | |||
| 51 | GKTMYM051 | CR05100M | Gasket, head cover. | ||
| 52 | NB111016115 | Hexagon head bolt, head cover (M16x115-10.9). | |||
| 53 | CR05300M | Head jacket cover (Water cooled specification). | |||
| 54 | NB17010035 | Hexagon head bolt, head jacket cover (M10x35-SUS/Water cooled specification). | |||
| 55 | GKTMYM055 | CR05500M | Gasket, head jacket cover (For water cooled head cover). | ||
| 61 | LNRMYM000 | CR06100M | Cylinder sleeve. | ||
| 61-1 | DWLCM3X10 | NE3203010 | Spring pin, cylinder sleeve (3x10AW). | ||
| 62 | CR06200MR | Cam ring (rightward sloped). | |||
| 65 | CR06500M | Retaining ring. | |||
| 67 | RNG75586 | PA62036 | O-ring, cylinder sleeve (AS568-258). | ||
| 68 | PINMYM020 | CR06800M | Lift pin (φ6xL155). | ||
| 68 | PINMYM029 | CR06809M | Lift pin set (Each 6 (Lift pin, spring, E5-ring)). | ||
| 69 | CR06900M | Spring, lift pin (KK1090). | |||
| 70 | SNP4401 | NG13E5 | Stop ring, lift pin (E5). | ||
| 71 | VALMYM000 | CR07100M | Suction plate valve. | ||
| 72 | SPGMYM008 | CR07200M | Spring, suction valve (Type: IV for NH3). | ||
| 72 | SPGMYM008 | CR07200M | Spring, suction valve (Type: IV for HFC, Propane). | ||
| 72 | CR0729M | Spring set, suction valve. | |||
| 73 | CR07300M2 | Valve plate. | |||
| 73-F | CR07300MF | Valve plate (For HFC and propane, pay attention to the stamped specification "F"). | |||
| 73-2 | CR07500M | Stud bolt, discharge valve cage. | |||
| 73-3 | NE2006B025 | Parallel pin, valve plate (Parallel pin B type 6x25st). | |||
| 73-4 | GKTMYM778 | CR77800M | Gasket, valve plate. | ||
| 73-5 | NB111016045 | Hexagon head bolt, valve plate (M16x45-10.9). | |||
| 77-L | CR07600M2 | Connecting rod (No.2) (W46,L310, bushing). | |||
| 78 | CR07800M | Hexagon head bolt, connecting rod (M12x80-10.9). | |||
| 79 | CR07900M | Disk Lock Washer, connecting rod (NL12). | |||
| 82 | BRGMYM030 | CR08200MF | Bushing, connecting rod (φ45xL56xt2.5). | ||
| 84 | CR08400M | Bearing halves (Same shape for upper and lower). | |||
| 84 | BRGMYM020 | CR08409M | Bearing halves set. | ||
| 85 | PSTMYM000 | CR08500ALM | Piston. | ||
| 86 | PINMYM000 | CR08600M | Piston pin. | ||
| 87 | SNPCMIX045 | NG11045 | Retaining ring, piston pin (H45). | ||
| 87 | SNPCMIX045 | CR8709M | Retaining ring set, piston pin. | ||
| 89 | CR08900MSPBF | Piston ring (1st) (SP-PC-BF2.5). | |||
| 90 | CR08900MFCT | Piston ring (2nd) (FC-T2.0). | |||
| 100 | CR08900MSPDM | Oil control ring (3rd) with coil (SP-PC-DM3.0). | |||
| 100 | SGMMYM020 | CR0899M | Piston ring set. | ||
| 109 | CAGMYM010 | CR10900M2 | Discharge valve cage (For NH3, pay attention to the stamped specification "N2"). | ||
| 109-F | CR10900MF | Discharge valve cage (F specification) (For HFC and propane Pay attention to the stamped specification "F"). | |||
| 110 | VALMYM010 | CR11000M | Discharge plate valve (For NH3, HFC and propane). | ||
| 110-F | CR11000MF | Inside discharge plate valve (F specification) (For HFC and propane). | |||
| 111 | SETMYM010 | CR11100M | Discharge valve seat (For NH3 Not stamped). | ||
| 111-F | CR11100MF | Discharge valve seat (F specification) (For HFC and propane Not stamped). | |||
| 112 | NB111010040 | Hexagon head bolt, discharge valve seat (M10x40-10.9 For NH3). | |||
| 112-F | CR11200MF | Hexagon head bolt, discharge valve seat (F specification) (For HFC and propane). | |||
| 112-2 | CR77900M | Retainer, discharge valve seat bolt (For NH3, pay attention to the stamped specification "N2"). | |||
| 113-F | NC15016 | Discharge valve nut (F specification) (Hard rock nut M16 For HFC and propane). | |||
| 114 | CR1169M | Spring set, discharge valve (For NH3). | |||
| 114 | CR1169M | Spring set, discharge valve (For HFC and propane). | |||
| 115 | NE2006B015 | Parallel pin, discharge valve seat (Parallel pin B - 6x15st). | |||
| 116 | SPGMYM018 | CR11600AB4 | Spring, discharge valve (Type IV For NH3). | ||
| 116 | SPGMYM018 | CR11600AB4 | Spring, discharge valve (Type IV For HFC and propane). | ||
| 117 | CR11700M | Spring, safety head (For NH3). | |||
| 117-F | CR11700MF | Spring, safety head (F specification) (For HFC and propane). | |||
| 118 | NN420080 | Nipple R3/4 xL80 (For oil strainer and oil cooler piping). | |||
| 135-M0 | CR13500M60 | Unloader push rod (No.0) (L208, Same for all suction side cylinder). | |||
| 135-M1 | CR13500M61 | Unloader push rod (No.1) (L266.5, for discharge side). | |||
| 135-M2 | CR13500M62 | Unloader push rod (No.2) (L322.5, for discharge side). | |||
| 142 | CR14200M | Spring, unloader device (KS4091). | |||
| 143 | CR14300M1 | Washer (No1), unloader push rod (φ27xφ22.2xt3). | |||
| 143-1 | CR14300M2 | Washer (No2), unloader push rod (φ32.8xφ23xt3). | |||
| 143-2 | CR14300M3 | Washer (No3), unloader push rod (φ29.8xφ23xt3). | |||
| 144 | NGIS022 | Retaining ring, unloader push rod (ISTW22). | |||
| 144 | CR13509M60 | Unloader push rod assembly 6M-0 (Include parts No.142 to No.144). | |||
| 144 | CR13509M60 | Unloader push rod assembly 6M-1 (Include parts No.142 to No.144). | |||
| 144 | CR13509M60 | Unloader push rod assembly 6M-2 (Include parts No.142 to No.144). | |||
| 145 | CR14500M | Unloader piston (φ48). | |||
| 145-1 | RNGMYS250073 | PA12035 | O-ring, unloader piston (JISB2401G35). | ||
| 146 | KF121AB | Unloader Cover (built in solenoid valve) (SB36A, same as K and L-series). | |||
| 147 | GKTMYK147 | CR14700K | Gasket, unloader cover (Same as K and L-series). | ||
| 149 | NB111008035 | Hexagon head bolt, unloader cover (M8xL35-10.9 (Same as K and L-series)). | |||
| 154 | CR15400M | Suction filter With O-ring (200 mesh (75 µm)). | |||
| 154-1 | RNGMYS160065 | PA11100 | O-ring, suction filter (JISB2401 P100). | ||
| 161 | CR16100M | Suction filter cover. | |||
| 162 | GKTMYM162 | CR77000M | Gasket, suction filter cover. | ||
| 163 | NB111016055 | Hexagon head bolt, suction filter cover (M16x55-10.9). | |||
| 169 | GKTMYM169 | CR16901M1 | Gasket, discharge manifold (M1500 E1). | ||
| 170M | NB111016170 | Hexagon head bolt (No.2), discharge manifold (M16x170-10.9). | |||
| 170S | NB111016120 | Hexagon head bolt (No.3), discharge manifold (M16x120-10.9). | |||
| 174B | NB56520095N2 | Hexagon head bolt, Shut-off valve (M20xL95 Stud bolt). | |||
| 174N | NC14020 | Hexagon head bolt, Shut-off nut (M20). | |||
| 184 | GKT05058 | PL300100 | Gasket, Shut-off valve (ANSI#300 4", t1.5). | ||
| 185 | CR18500TAW | Oil cooler (water cooled) (T-TCF-0.15). | |||
| 198 | LC1203314 | Thermometer, discharge side (BT-T-50 (50-200°C)). | |||
| 200 | LC1203311 | Thermometer, suction side (BT-T-50 (-50~+50°C)). | |||
| 208 | NB60024 | Eyebolt (M24). | |||
| 208 | NB60030 | Eyebolt (M30). | |||
| 213 | NA | Safety valve (20A). | |||
| NI | MH1405NF | Direct coupling. Type: E4-05-NF-40R/145R (for direct coupling). | |||
| NI | NB150120601.25 | Direct coupling. Type: G4-05-NF-40R/145R Hexagon head bolt, direct coupling (M12xP1.25x60). | |||
| 724-2 | NA | Shut-off valve (GVFM (ANSI) 4"). | |||
| HT-6 | NJ32706 | Connection (L-type, R3/4xp27) (For Oil cooler piping). | |||
| HT-8 | NJ22706 | Connection (I-type, R3/4xp27) (For Oil cooler piping). | |||
| HT-9 | NJ21002NE | Connection (I-type, R1/4xp10) (For oil drain). | |||
| HT-10 | NJ20603NE | Connection (I-type, R3/8xp6) (For suction, discharge and oil pressure). | |||
| HT-12 | QA11020 | Pipe, oil cooler (20A steel pipe, fixed length). | |||
| HT-13 | QA110210 | Pipe, oil drain (φ10 annealed pipe, fixed length). | |||
| HT-15 | NM52020 | Hose nipple (R3/8) (For oil drain, initial oil charge and purging). | |||
| HT-16 | NM530650 | Hose nipple (R3/4) (For water cooled head cover and OC cooling water). | |||
| HT-17 | NN13006 | Street elbow (R3/4xRc3/4) (For water cooled head cover and OC cooling water). | |||
| HT-18 | PN905020 | Hose band (20A) (For water cooled head cover). | |||
| HT-19 | PN015020(M) | Blade hose (20A) (For water cooled head cover). | |||
| HT-20 | NN420100 | Nipple (R3/4xL100). | |||
| HT-21 | NA | Nipple (Special) (NPT1"xR1"xL100). | |||
| HT-22 | NN12006 | Elbow (High pressure) (Rc3/4xRc3/4). | |||
| HT-23 | NF0310402 | Bushing (R1/2xRc1/4) (for equalizing valve (start up)). | |||
| HT-24 | NJ31203NE | Connection (L-type, R3/8xp12) (for equalizing valve (start up)). | |||
| P-2 | NF06004 | Plug (R1/8) (For unloader and seal oil supply). | |||
| P-3 | NF06008 | Plug (R1/4) (For seal oil drain, oil drain and relief). | |||
| P-4 | NF06010 | Plug (R3/8) (For suction chamber and shaft). | |||
| P-5 | NF06015 | Plug (R1/2) (For MBH, OS return and internal oil line). | |||
| P-6 | NF06020 | Plug (R3/4) (For unloader, internal oil line and oil supply). | |||
| P-7 | NF06025 | Plug (R1") (For heater, MBH, pressure equalizer). | |||
| P-24 | NL05104M | Thermometer plug (R1/2xL50). | |||
| P-25 | KS11105 | Thermometer plug (R1/2xL100). | |||
| NI | RNGMYM008 | CR710094M | O-ring set for 4M. | ||
| NI | CR711194M | Gasket set for 4M. | |||
| NI | BRGMYM060 | NA | DISTANCE BUSHING FIT MYCOM *M* D-10 TZW70. | ||
| NI | COVMYM000 | CR07300M3T | (73)TAPA DEL PLATO DE ASPIRACION *M* / SUCTION VALVE PLATE COVER. |
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