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Removal and Installation of Travel Remote Control Valve
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 (17 mm, 19 mm) •Hexagon wrench (8 mm) •Phillips screwdriver •Marking pen •Caps •Plugs •Rag •Cleaning fluid 1.Removal of Travel Remote Control Valve [1] Remove the 3 screws (1) on the cover (2) and remove the cover.
[2] Remove the floor mat (3).
1 Screw 2 Cover 3 Floor mat
[3] Use a hexagon wrench (8 mm) to remove the 2 bolts (4) on both the left and right sides, and then remove the left and right travel pedals (5).
[4] Use a hexagon wrench (8 mm) to remove the 2 bolts (6) on both the left and right sides of the lever, and then remove the levers (7).
[5] Use a wrench (19 mm) to remove the 5 bolts (8), and then remove the under cover (9).
4 Bolt 5 Pedal 6 Bolt 7 Lever 8 Bolt 9 Under cover
[6] Use a wrench (19 mm) to remove the 6 hoses (10). •Mark the valve and hoses so that the connectors match at the time of assembly. •Attach caps or plugs to the valve and hoses to prevent any entry of water, dust or dirt. •Clean the valve and hoses by spraying with a parts cleaner to prevent scratches and prevent dirt from accumulating on the connectors.
[7] Use a wrench (19 mm) to remove the 2 hose adapters (11).
[8] Use a box wrench (17 mm) to remove the 2 bolts (12) on both the left and right sides of the travel lever .
10 Pilot hose 11 Hose adapter 12 Bolt
[9] Pull up the travel remote control valve (13) into the cab, and then remove the travel remote control valve.
2.Installation of Travel Remote Control Valve
To install, perform the reverse of the removal procedure.
Be careful not to connect the hydraulic hoses in incorrect locations.
Before installing the hoses, check that the hose adapters are not loose and retighten them to the specified torque.
Hose adapter, hydraulic hose tightening torque :36.3 ± 2.0 N•m
13 Travel remote control valve