ZR/ZT30, ZR/ZT37, ZR/ZT45 oil-free screw air compressor maintenance package: Air/oil filter kit: 2901110500; Inlet valve service kit: 2901110100; Inlet valve overhaul kit: 2901110400; Check valve kit: 2901186400; Breather kit: 2901111500; Oil pump kit: 2901110800; Drive shaft bearing maintenance kit: 2901111200; LP element exchange kit: 2901186600; HP element exchange kit: 2901186500; Cooler Kit ZT: 2901186700; Cooler Kit ZR: 2901186800; Wearing parts EWD 330: 2901063320 (model quantity Pack 2; FFID 3; FFIMD 4); Motor bearing kit: 2901181100 ZR/ZT30; 2901181200 ZR/ZT37; 2901181200 ZR/ZT45; Rubber element coupling: 1622113602, quantity 8; Rubber buffer gearcasing: 5112216500 Quantity 2; Rubber buffer motor: 1619518901 Quantity 1. Preventive maintenance kit (A) Service Plan A-4000hours: 2901112200; Preventive maintenance kit (B) Service Plan B-8000 hours: 2901187400; IMD Preventive Maintenance Kit IMD -8000hours: 2901160100; Preventive maintenance package C ZR/ZT30,ZR/ZT37,ZR/ZT45无油螺杆空压机保养包： 空气/油滤保养包（Air /oil filter kit）：2901110500； 进气阀保养包（Inlet valve service kit）:2901110100; 进气阀大修包（Inlet valve overhaul kit）:2901110400; 单向阀保养包（Check valve kit）:2901186400; 呼吸器保养包（Breather kit）:2901111500; 油泵保养包（Oil pump kit）:2901110800; 驱动轴轴承保养包（Drive shaft bearing kit）:2901111200; 低压转子更换包（LP element exchange kit）:2901186600; 高压转子更换包（HP element exchange kit）:2901186500; 冷却器保养包（Cooler kit ZT）:2901186700; 冷却器保养包（Cooler kit ZR）:2901186800; 易损件包（Wearing parts EWD 330）:2901063320(机型数量Pack 2;FFID 3;FFIMD 4)； 电机轴承包（Motor bearing kit）:2901181100 ZR/ZT30;2901181200 ZR/ZT37;2901181200 ZR/ZT45; 橡胶联轴块（Rubber element coupling）:1622113602 数量8； 齿轮箱减震垫（Rubber buffer gearcasing）:5112216500数量2； 电机减震垫（Rubber buffer motor）:1619518901 数量1。 预防性保养包A（Preventive maintenance kit( A) Service Plan A-4000hrs）:2901112200; 预防性保养包B（Preventive maintenance kit( B) Service Plan B-8000hrs）:2901187400; IMD预防性保养包（Preventive maintenance kit IMD -8000hrs）:2901160100; 预防性保养包C（Preventive maintenance kit(C) Service Plan C-16000hrs）:2901188300; 预防性保养包D（Preventive maintenance kit(D) Service Plan B-40000hrs）:2901188900; 低压转子（LP element）：1616727581; 高压转子（HP element）：1616727181;