
2 minute read
Removal and Installation of 5 Stack Solenoid
from Sumitomo SH250-5 SH250-5LR Hydraulic Excavator Service Repair Manual WLSM2105-00W - PDF DOWNLOAD
Warning ・ Be sure to release hydraulic pressure before beginning work.
Caution ・ Be sure to stop the engine before beginning work.
Items to prepare •Wrenches (13 mm, 17 mm, 19 mm, 22 mm) •Marking pen •Caps •Plugs •Rag •Cleaning fluid 1.Removal of 5 Stack Solenoid Valve [1] Attach the specialty adapter (1) to the area where the air breather was removed, and set the vacuum pump (2). Create negative pressure in the hydraulic oil tank using the vacuum pump.
[2] Use a wrench (13 mm) to remove the 2 cover bolts (3), and then remove the cover (4).
1 Specialty adapter 2 Vacuum pump 3 Bolt 4 Cover
[3] Remove the 5 connectors (5).
[4] Use wrenches (19 mm, 22 mm) to remove the hoses (6), (7) and (8). •Mark the solenoid valve and hoses so that the connectors match at the time of assembly. •Use caps and plugs to cover the solenoid valve and hose to prevent any entry of water, dust or dirt. •Clean the solenoid valve and hoses by spraying them with a parts cleaner to prevent scratches and prevent dirt from accumulating on the connectors.
[5] Use a wrench (22 mm) to remove the hoses (9) and (10). •Mark the solenoid valve and hoses so that the connectors match at the time of assembly. •Use caps and plugs to cover the solenoid valve and hose to prevent any entry of water, dust or dirt. •Clean the solenoid valve and hoses by spraying them with a parts cleaner to prevent scratches and prevent dirt from accumulating on the connectors.
5 Connector 6 Pilot hose (use 22 mm wrench) 7 Pilot hose (use 19 mm wrench) 8 Pilot hose (use 19 mm wrench) 9 Pilot hose (use 22 mm wrench) 10 Drain hose (use 22 mm wrench)
[6] Use wrenches (19 mm, 22 mm) to remove the hoses (11), (12) and (13). •Mark the solenoid valve and hoses so that the connectors match at the time of assembly. •Use caps and plugs to cover the solenoid valve and hose to prevent any entry of water, dust or dirt. •Clean the solenoid valve and hoses by spraying them with a parts cleaner to prevent scratches and prevent dirt from accumulating on the connectors.
[7] Use a wrench (17 mm) to remove the 2 bolts (14), and then remove the 5 stack solenoid valve (15).
11 Pilot hose (use 19 mm wrench) 12 Pilot hose (use 19 mm wrench) 13 Pilot hose (use 22 mm wrench) 14 Bolt 15 5 stack solenoid valve
2.Installation of 5 Stack Solenoid Valve
Perform the reverse of the removal procedure.
The hose connections and electrical connector connections are indicated below.