XCMG Main Pump

What is the XCMG Main Pump

The XCMG Main Pump stands as the core hydraulic power generation unit in construction machinery, integrating sophisticated mechanical components with advanced hydraulic control technology. This comprehensive system features dual MAIN PUMP REGULATOR units that dynamically adjust pumping parameters to match operational demands, ensuring optimal performance across varying load conditions. The identification NAME plate clearly marks this precision-engineered component for easy recognition and maintenance.
At the heart of the XCMG Main Pump lies the robust CYLINDER BODY housing the symmetrical CYLINDER BLOCK GROUP (R) and CYLINDER BLOCK GROUP (L), which work in perfect coordination with the PISTON ASSEMBLY containing multiple precision PISTON elements. Power transmission begins with dual DRIVE SHAFT components connected through a SPLINE CONNECTOR to the SWASH PLATE, which converts rotational motion into reciprocating piston movement via SLIDE SHOE and SLIPPER PLATE mechanisms.
The bearing system incorporates CYLINDER ROLLER BEARING, NEEDLE BEARING, and BALL SURFACE BUSHING supported by BEARING WASHER and SUPPORTING DISC elements. Hydraulic distribution is managed through dual OIL DISTRIBUTION CASE units containing both OIL DISTRIBUTION DISC ® and OIL DISTRIBUTION DISC (L), precisely aligned with OIL DISTRIBUTION DISC DOWEL. The regulation system features SERVO PISTON controlled by ANGULAR PIN COMPONENT and FEEDBACK PIN, with STOPPER (L) and STOPPER (S) limiting movement range.
The assembly utilizes numerous fastening components including multiple HEXAGON SOCKET SCREW BOLT, COUNTERSINK BOLT, and INNER HEXAGON POSITIONING SCREW secured with HOLD WASHER and NUT elements. Comprehensive sealing is achieved through multiple O-RING and SQUARE RING components, with dual OIL SEAL COVER units providing additional protection. Additional critical components include the RETURN SPRING for piston retraction, PRESSURE PLATE for swash plate adjustment, SWASH-PLATE JACK STAND for stability, and ORIFICE for flow control.
The complete assembly is housed within the PUMP BODY and includes identification NAMEPLATE secured with RIVET PIN. The integration of PLUG, EYE BOLT, and SPRING PIN components ensures maintenance accessibility and operational reliability. Every element within the XCMG Main Pump is precision-manufactured to withstand extreme pressure conditions, delivering consistent hydraulic power while maintaining energy efficiency throughout the equipment’s service life. The sophisticated engineering behind the XCMG Main Pump ensures reliable performance in the most demanding construction applications.

Parameters of XCMG Main Pump

803099139 MAIN PUMP
316102045 MAIN PUMP OIL SUPPLY PIPELINE
No.	PART NUMBER	NAME
1	860169102	MAIN PUMP REGULATOR
2	860169199	MAIN PUMP REGULATOR
3	860201304	PISTON ASSEMBLY
4	860169204	CYLINDER BODY
5	860169100	CYLINDER BLOCK GROUP (R)
6	860169105	CYLINDER BLOCK GROUP (L)
7	860201307	SWASH PLATE
8	860201309	DRIVE SHAFT
9	860201310	DRIVE SHAFT
10	860201311	SPLINE CONNECTOR
11	860201312	CYLINDER ROLLER BEARING
12	860201313	NEEDLE BEARING
13	860201314	BEARING WASHER
14	860201315	SUPPORTING DISC
15	860201317	PISTON
16	860201318	SLIDE SHOE
17	860201319	PRESSURE PLATE
18	860201320	BALL SURFACE BUSHING
19	860201321	RETURN SPRING
20	860201322	SLIPPER PLATE
21	860201323	SWASH PLATE
22	860201324	INCLINED BUSHING
23	860169209	SWASH-PLATE JACK STAND
24	860201326	WASHER WASHER
25	860169202	OIL SEAL COVER
26	860169106	OIL SEAL COVER
27	860201329	PUMP BODY PUMP BODY
28	860169197	OIL DISTRIBUTION CASE
29	860169104	OIL DISTRIBUTION CASE
30	860201332	OIL DISTRIBUTION DISC ®
31	860201333	OIL DISTRIBUTION DISC (L)
32	860201334	HEXAGON SOCKET SCREW BOLT
33	860201335	HEXAGON SOCKET SCREW BOLT
34	860125680	HEXAGON SOCKET SCREW
35	860201337	HEXAGON SOCKET SCREW BOLT
36	860201338	HEXAGON SOCKET SCREW BOLT
37	860125561	PLUG
38	860201340	BOLT BOLT
39	860201342	ORIFICE
40	860126349	COUNTERSINK BOLT
41	860201308	ANGULAR PIN COMPONENT
42	860201344	ANGULAR PIN
43	860201345	SERVO PISTON
44	860201346	STOPPER (L)
45	860201347	STOPPER (S)
46	860201348	FEEDBACK PIN
47	860201349	O-RING
48	860201350	O-RING
49	860201351	O-RING
50	860201352	O-RING
51	860201353	O-RING
52	860201354	O-RING
53	860169205	SQUARE RING
54	860201355	O-RING
55	860201356	O-RING
56	860201357	O-RING
57	860201358	OIL SEAL
58	860201359	HOLD WASHER
59	860201360	HOLD WASHER
60	860125701	NUT
61	860201361	HOLD WASHER
62	860125703	OIL DISTRIBUTION DISC DOWEL
63	860201362	SPRING PIN
64	860201363	EYE BOLT
65	860201364	INNER HEXAGON POSITIONING SCREW
66	860201365	INNER HEXAGON POSITIONING SCREW
67	860125708	INNER HEXAGON POSITIONING SCREW
68	860125709	NAMEPLATE
69	860201367	RIVET PIN
70	860201339	BOLT BOLT

Related XCMG Spare Parts

XCMG Loader Parts- 1000736512 Oil Filter

XCMG XC870K Backhoe Loader Parts- 1000736512 Oil Filter

XCMG 310600286 Link Pin: Precision Connection for Excavator Linkage Systems

XCMG 800151162 Fuel Water Separator: Premium Protection for Your Excavator

XCMG 800155719-800155718 Air Filter: Superior Engine Protection for Your Excavator

High-Quality 805004815 Bolt M16X80 for XCMG Excavator Parts

XCMG 819908881 Left Side Cutter: Precision Trenching Performance

XCMG GR1803 Motor Grader Parts- 612600114993 Air Filter

XCMG 860548526 Hydraulic Oil Return Filter: Maximum Hydraulic System Protection

XCMG 819908880 Right Side Cutter: Precision Cutting Performance

XCMG 860575920 Water Pump: Reliable Engine Cooling Performance

Why Choose Us?

We provide professional wearing/maintenance parts lists within 24 hours based on vehicle details, ensuring accurate delivery and rational inventory. For Benz, Volvo, Scania, MAN, DAF, Iveco, Kamaz distributors, our 10-year experience delivers hot-selling parts lists per budget/market info to kickstart business and quick profits. We also help stock based on your business, repair focus, capabilities, budget and warehouse size for instant customer service, recommend hot-sellers per local market, suggest display types/quantities, and collaborate for fast capital return, strong client ties and mutual growth.

Online Catalog of XCMG Parts

If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.