1.机体总成（YSD490D） Engine Block Assy -- Yangdong Diesel Engine YSD490D Spare Parts Catalog
序 号 名称 图号/标准号 数 量 附 注
Ser No Name of Parts Parts No Qty Remarks
1 气缸套 Cylinder liner YSD490Q-01003 4
2 气缸套封水圈 Seal ring of cylinder liner YSD490Q-01002 8
3 O 形橡胶密封圈 O type airproof circle GB/T3452.1 23.6×3.55G 1
4 呼吸器焊接件 Respirator weldment YSD490Q-01210V1 1
5 平垫圈 8 Flat washer 8 GB/T848 8 35
6 弹簧垫圈 8 Spring washer 8 GB/T93 8 35
7 螺栓 M8×20 Bolt M8×20 GB/T5783 M8×20 28
8 双钢丝式环箍 22 Clamp JB/T3616.1 22 3
9 呼吸器回油橡胶管 Oil return rubber pipe YSD490Q-01203V1 1
10 呼吸器回油管接头 Oil return joint YSD490Q-01028 1
11 呼吸器出气塑料管 Respirator ex-gas plastic tube YSD490Q-01205 1
12 螺栓 M8×25 Bolt M8×25 GB/T5782 M8×25 2
13 进水管 Inlet pipe YSD490Q-01013 1
14 六角头锥形螺塞 NPT3/8 Taper plug NPT1/4 Q618B03 1
15 进水管垫片 Inlet pipe gasket YSD490Q-01011V1 1
16 组合密封垫圈 Sealing washer JB/T982 16 1
17 凸轮轴后衬套 Rear camshaft bush YSD490Q-01025V1 1
18 凸轮轴中衬套 Middle camshaft bush YSD490Q-01024V1 1
19 凸轮轴前衬套 Front camshaft bush YSD490Q-01023V1 1
20 主轴瓦上瓦 Main bearing halfshell(upper) YSD490ZL-01015V1 5
21 主轴瓦下瓦 Main bearing halfshell(lower) YSD490ZL-01016V1 5
22 油底壳垫片 Oil sump gasket YSD490Q-01018:1 1
23 机油尺部件 Oil dipstick Y495T-C018-01400V1 1
24 放油开关部件 Oil drain valve YND485D-A008-01730V1 1
25 放油螺塞 Oil drain plug YND485D-A008-01703V1 1
26 组合密封垫圈 Sealing washer JB/T982 20 2
27 油底壳焊接件 Oil sump weldment Y490D-E848-01710 1
28 放油螺塞 Oil rain plug Y480G-01703V2 1
29 主轴承盖螺栓 Main bearing cap bolt YSD490Q-01114 10
30 曲轴止推片(下) Lower thrust piece of crankshaft YSD490Q-01007 2
31 曲轴止推片(上) Upper thrust piece of crankshaft YSD490Q-01008 2
32 放水开关接头 Water drain valve joint YSD490Q-01014 1
33 放水开关部件 Water drain valve Y480G-01300 1
34 双钢丝式环箍 20 Clamp JB/T3616.1 20 1
35 放水开关出水橡胶管 Water drain cock pipe Y385T-6-01005 1
36 压力表用传感器部件 Oil pressure sensor Y4102D-A001-01500 1
37 圆柱销 Cylindrical Pin GB/T119.1 8h8×20 3
38 圆柱销 Cylindrical Pin GB/T119.1 10h8×20 2
39 机体部件 Engine block YSD490D-A001-01100 1
40 定位套 Locating sleeve YSD490Q-01102 2
41 后油封盖垫片 Rear oil sealing cover gasket YSD490Q-01009:1 1
42 后油封盖 Rear oil sealing cover YSD490Q-01012 1
43 骨架式橡胶油封 Cased rubber oil seal HG4-692-67 PG(SG)100×130×12 1
44 螺栓 M8×30 Bolt M8×30 GB/T5782 M8×30 5
45 飞轮壳 Flywheel housing YSD490G-01010V1 1 SAE4#
46 平垫圈 12 Flat washer 12 GB/T848 12 8
47 弹簧垫圈 12 Spring washer 12 GB/T93 12 8
48 螺栓 M12×35 Bolt M12×35 GB/T5783 M12×35 6
49 螺栓 M12×50 Bolt M12×50 GB/T5782 M12×50 2
2.正时齿轮室总成(YSD490D) Timing Gear Case Assy -- Yangdong Diesel Engine YSD490D Spare Parts Catalog
序 号 名称 图号/标准号 数 量 附 注
Ser No Name of Parts Parts No Qty Remarks
1 骨架式橡胶油封 Cased rubber oil seal HG4-692-67 PG(SG)60×80×12 1
2 指针 Pointer YSD490Q-02015 1
3 正时齿轮室盖 Timing gear case cover YSD490Q-02013 1
4 螺栓 M8×25 Bolt M8×25 GB/T5783 M8×25 5
5 弹簧垫圈 8 Springle washer 8 GB/T848 8 17
6 平垫圈 8 Flat washer 8 GB/T848 8 17
7 螺栓 M8×65 Bolt M8×65 GB/T5782 M8×65 4
8 正时齿轮室盖垫片 Timing gear case cover gasket YSD490Q-02014V1 1
9 螺栓 M12×35 Bolt M12×35 GB/T5783 M12×35 1
10 弹簧垫圈 12 Spring washer 12 GB/T93 12 1
11 凸轮轴正时齿轮压板 Camshaft timing gear clamp Y480G-02012 1
12 凸轮轴正时齿轮 Camshaft timing gear YSD490Q-02011 1
13 螺栓 M8×55 Bolt M8×55 GB/T5782 M8×55 4
14 惰齿轮压板 Idle gear clamp YSD490Q-02008 1
15 正时惰齿轮部件 Timing idle gear parts YSD490Q-02200 1
16 正时惰齿轮轴 Timing idle gear shaft YSD490Q-02007 1
17 正时齿轮室 Timing gear case YSD490Q-02001 1
18 正时齿轮室垫片 Timing gear case gasket YSD490Q-01001:1 1
19 圆柱销 Cylindrical Pin GB/T119.1 8h8×20 2
20 螺栓 M6×20 Bolt M6×20 GB/T5783 M6×20 6
21 弹簧垫圈 6 Spring washer 6 GB/T93 6 6
22 喷油泵正时齿轮 Fuel injection pump timing gear YSD490Q-02003 1
23 曲轴正时齿轮 Crankshaft timing gear YSD490Q-02009 1
24 喷油泵连接板 Fuel injection pump connecting plate YSD490G-13-02004 1
25 正时齿轮室前盖垫片 Front cover gasket of timing gear case YSD490Q-02016:1 1
26 正时齿轮室前盖 Front cover of timing gear case YSD490Q-02017 1
27 螺栓 M8×45 Bolt M8×45 GB/T5782 M8×45 4
28 螺栓 M8×16 Bolt M8×16 GB/T5783 M8×16 2
3.气缸盖总成(YSD490D) Cylinder Head Assy -- Yangdong Diesel Engine YSD490D Spare Parts Catalog
序 号 名称 图号/标准号 数 量 附 注
Ser No Name of Parts Parts No Qty Remarks
1 标牌铆钉 Rivet 2×5 GB/T827 2×5 4
2 标牌 Name plate Y480G-03023EV1 1
3 加油口盖 Filler cap YSD490Q-03002V1 1
4 盖形螺母 M10 Cap nut M10 GB/T923 M10 4
5 组合密封垫圈 10 Sealing washer 10 JB/T982 10 4
6 气缸盖罩 Cylinder head bonnet YSD490ZL-03004V1 1
7 气缸盖罩垫片 Cylinder head bonnet gasket YSD490ZL-03005V1 1
8 螺母 M10 Nut M10 GB/T6170 M10 4
9 弹簧垫圈 10 Spring washer 10 GB/T93 10 4
10 摇臂座固紧螺柱 Rocker arm seat fastening stud YSD490Q-03001 4
11 摇臂轴部件 Rockshaft parts YSD490Q-03200 1
12 气门锁夹 Valve collets YSD490Q-03008 16
13 气门弹簧上座 Valve spring seat (upper) YSD490Q-03009 8
14 气门内弹簧 Valve spring(inner) YSD490Q-03017 8
15 气门外弹簧 Valve spring(outer) YSD490Q-03007 8
16 气门弹簧下座 Valve spring seat (lower) YSD490Q-03010 8
17 阀杆油封 Valve stem oil seal Y485-03021 8
18 气门导管 Valve guide YSD490Q-03102 8
19 气缸盖部件 Cylinder head parts YSD490ZL-03100 1
20 气缸盖垫片 Cylinder head gasket YSD490Q-01020 1
21 排气门 Exhaust valve YSD490Q-03015 4
22 进气门 Intake valve YSD490Q-03014 4
23 螺栓 M8×20 Bolt M8×20 GB/T5783 M8×20 4
24 弹簧垫圈 8 Spring washer 8 GB/T93 8 13
25 平垫圈 8 Washer 8 GB/T848 8 13
26 吊环 Hanging ring YSD490Q-03011 1
27 后盖板垫片 Back cover gasket YSD490Q-03023:1 1
28 后盖板 Back cover YSD490Q-03023:1 1
29 螺栓 M8×25 Bolt M8×25 GB/T5783 M8×25 7
30 缸盖螺栓 cylinder head bolt YSD490Q-01004 14
31 缸盖螺栓 cylinder head bolt YSD490Q-01005 4
4.活塞连杆总成(YSD490D) Piston-Connecting Assy-- Yangdong Diesel Engine YSD490D Spare Parts Catalog
序 号 名称 图号/标准号 数 量 附 注
Ser No Name of Parts Parts No Qty Remarks
1 活塞环部件 Piston rings YSD490G-7-04300 4
2 活塞 Piston YSD490G-7-04005 4
3 活塞销 Piston pin YSD490Q-04004 4
4 活塞销挡圈 Piston pin snap ring YSD490Q-04006 8
5 连杆部件 Connecting rod YSD490Q-04200 4
6 连杆轴瓦上瓦 Connecting rod bearing shell（upper） YSD490ZL-04003 4
7 连杆轴瓦下瓦 Connecting rod bearing shell（lower） YSD490ZL-04004 4
5.曲轴飞轮总成(YSD490D) Crankshaft-Flywheel Assy-- Yangdong Diesel Engine YSD490D Spare Parts Catalog
序 号 名称 图号/标准号 数 量 附 注
Ser No Name of Parts Parts No Qty Remarks
1 皮带轮压紧螺栓 Pulley bolt Y480G-05007 1
2 皮带轮压紧垫板 Pulley backing plate Y480G-05006 1
3 曲轴皮带轮 Crankshaft pulley YSD490G-05006 1
4 曲轴甩油盘（前） Oil thrower YSD490Q-05005 1
5 键 C12×8×63 Key C12×8×63 GB/T1096 C12×8×63 1
6 曲轴 Crankshaft YSD490Q-05003 1
7 圆柱销 Cylindrical pin GB/T119.1 10h8×20 1
8 飞轮螺栓 Flywheel bolt YSD490Q-05002 6
9 飞轮齿圈部件 Flywheel ring YSD490G-05100 1 SAE7.5#
6.凸轮轴总成(YSD490D) Camshaft Assy -- Yangdong Diesel Engine YSD490D Spare Parts Catalog
序 号 名称 图号/标准号 数 量 附 注
Ser No Name of Parts Parts No Qty Remarks
1 推杆 Push rod YSD490Q-06003 8
2 挺柱 Tappet YSD490Q-06002A 8
3 键 C8×7×22 Key C8×7×22 GB/T1096 C8×7×22 1
4 凸轮轴 Camshaft YSD490Q-06001 1
5 凸轮轴止推板 Camshaft thrust plate YSD490Q-02010 1
6 平垫圈 8 Flat washer 8 GB/T848 8 2
7 弹簧垫圈 8 Spring washer 8 GB/T93 8 2
8 螺栓 M8×20 Bolt M8×20 GB/T5783 M8×20 2