Excavator and bulldozer hydraulic cylinder removal steps

Xiamen Fortune Industrial Co.,Limited supply excavator and bulldozer hydraulic boom cylinder,lift cylinder,arm cylinder,ram cylinder,stick cylinder,bucket cylinder etc for backhoe Caterpillar,Komatsu,Hitachi,Doosan,Kobelco,JCB,Hyundai,Volvo,Shantui,John Deere,CASE,New Holland,Bobcat,Daewoo,Samsung,Kato,Wheel Loader,Crane,and so on.

Below FT will introduce how to remove excavator hydraulic cylinder to replace and repair

1. Before disassembling the hydraulic cylinder, the fortunepart hydraulic circuit should be relieved of pressure. Otherwise, when the oil pipe joint connected with the oil cylinder is loosened, the high-pressure oil in the circuit will be sprayed out quickly. When depressurizing the hydraulic circuit, first loosen the handwheel or pressure regulating screw at the relief valve, etc., to unload the pressure oil, and then cut off the power or power source to stop the hydraulic device.

2. During disassembly, prevent damage to the top thread of the piston rod, the thread of the oil port, the surface of the piston rod, and the inner wall of the cylinder liner. In order to prevent the slender parts such as the piston rod from bending or deforming, the stow should be used to support the balance during placement.

3. The disassembly must be carried out in order. As the structure and size of various hydraulic cylinders are not the same, the disassembly sequence is also slightly different. Generally, the oil in the two chambers of the cylinder should be drained, then the cylinder head should be removed, and finally the piston and piston rod should be removed. When disassembling the cylinder head of the hydraulic cylinder, special tools should be used for the key or snap ring of the internal key type connection, and the use of flat shovel is prohibited; the flange type end cap must be pushed out with screws, and hammering or hard prying is not allowed . When the piston and piston rod are difficult to withdraw, they should not be forced out. The reason should be found out before disassembly.

4. Before and after unloading, try to create conditions to prevent the parts of the hydraulic cylinder from being contaminated by surrounding dust and impurities. For example, the disassembly should be carried out in a clean environment as much as possible; after disassembly, all parts should be covered with plastic cloth, not cotton cloth or other working cloth.

5. After the oil cylinder is disassembled, check carefully to determine which parts can continue to be used, which parts can be used after repair, and which parts must be replaced. For more information and maintenance knowledge, welcome to pay attention to the maintenance experts of excavator accessories on the official account, and provide the most professional accessories services and technical consultations, so that your equipment has more lasting vitality!

 

Komatsu excavator hydraulic boom cylinder,arm cylinder and bucket cylinder

Below is the model list for excavator and bulldozer hydraulic cylinders

Fit for Brand	Excavator and bulldozer Model List
KOMATSU	PC20	PC30	PC35	PC40	PC45
	PC60-1-3-5-6-7	PC75	PC100-3-5	PC120-3-5	PC150
	PC200-1-3-5-6-7-8	PC220-1-3-5-6	PC240	PC300-1-3-5-6-7	PC350
	PC400-3-5-6	PC450	PC650	PC750	PC800
CATERPILLAR	E55/E55B	E70/E70B	E110/E110B	E120/E120B	E180
	E215	E225DLC	E235	E240	E300B
	E307	E306	E305	E311/E312	E320/E200B
	E322	E324	E325	E330	E339
	E345	E349	E450
HITACHI	EX30	EX40	EX55	EX60-1-2-3-5	EX70
	EX100-1-3	EX120-1-3-5	EX150	EX200-1-2-3-5-8	EX220
	EX230	EX270	EX300-1-2-3-5-6	EX400-1-2-3-5	EX600
	UH043	UH052	UH053	UH07	UH081
	UH082	UH083	ZAXIS 60	ZAXIS 200-3-6	ZAXIS 240
	ZAXIS 270	ZAXIS 330	ZAXIS 360	ZAXIS 450	ZAXIS 870
	ZAXIS 110	ZAXIS 120
BULLDOZER	D20	D3	D30	D31	D3L
	D3C	D37	D3D	D4C	D40
	D4D	D4H	D41	D45	D50/D5/D5B
	D53/D57/D58	D60/D65	D6D/D6	D6C	D6H
	D65=D85ESS-2	D75	D7G/D7R/D7H/D7	D80/D85	D85A-12
	D8K	D8N/R/L/T	D9N	D85EX-15	D150
	D155	D275	D355
KATO	HD80	HD140	HD250	HD400(HD450)	HD550
	HD700(HD770)	HD820(HD850)	HD880	HD900	HD1023
	HD1220	HD1250	HD1430	HD2053
SUMITOMO	SH60	SH70	SH100	SH120	SH200
	SH210	SH220	SH280	SH300	SH320
	SH350	SH360	SH400	SH450	SH460
	LS2800FJ	S340	S430
KOBELCO	SK60	SK70	SK75	SK07-N2	SK07/2/7
	SK100	SK120-3-5-6	SK125	SK160	SK200-1-3-5-6-8
	SK210	SK220-3-6	SK230	SK250	SK260
	SK300-3-6	SK320	SK330	SK400	SK480
DAEWOO	DH55	DH60	DH80	DH130	DH150
	DH200	DH220	DH215	DH220	DH258
	DH280	DH300	DH360	DH370-9	DH400
	DH420	DH500	UH07	K907C
HYUNDAI	R60	R80	R130-5-7	R150	R200
	R200-5	R210	R210-7	R215-7	R220-5
	R225-7	R260-5	R265	R290	R300-5
	R305	R320	R385	R420	R450-3-5
VOLVO	EC55B	EC140B	EC210	EC240	EC290B
	EC290B PRIME	EC360	EC460	EC700
KUBOTA	KX35	KX50	KX85	KX135	KX155
	KX161
DOOSAN	DX60	DX200	DX300	DX340
LIEBHERR	R914	R916	R926	R934	R944
	R954	R964	R974
YUCHAI	YC35	YC60	YC85	YC135
CASE	CX55	CX75	CX135	CX240	CX360
	YM55	YM75	CX310
TAKEUCHI	TB150	TB175
LIUGONG	LG150	LG200	LG220	LG925	LG936
SANY	SY65	SY90	SY130	SY215	SY335
	SY365	SY6385
	XG60	XG80	XG120	XG200	XG330
	XG370
	SE210LC	SE280LC
Mitsubishi	MS110/MS120	MS180	MS230	MS280