Service Repair Manual
Models
D25D, D30D, D350D
ARTICULATED TRUCK
Shutdown SIS
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Product: ARTICULATED TRUCK
Model: D25D ARTICULATED TRUCK 1HK
Configuration: D25D, D30D, D350D ARTICULATED TRUCK 1HK00001-00673 (MACHINE) POWERED BY 3306 ENGINE
Disassembly and Assembly
D25D,D30D AND D350D ARTICULATED DUMP TRUCKS VEHICLE SYSTEMS
Media Number -SENR8210-01
Publication Date -01/03/2005
Date Updated -05/12/2017
SENR82100004
Steering Control Valve
SMCS - 4307-015; 4307-016; 4307-010
Remove & Install Steering Control Valve
NOTE: If necessary, drain the oil at least halfway down the hydraulic tank.
NOTE: Put identification on all lines, hoses and tubes for installation purposes.
1. Remove lines (1) from the hoist control valve.
2. Remove bolts and flanges (2). Remove lines (4), (5) and (6) from the steering control valve.
3. Remove mounting bolts (3) and then remove steering control valve (7). Weight of the steering
control valve is 23 Kg (50 lb.).
NOTE: The following steps are for the installation of the steering control valve.
4. Put steering control valve (7) in position and install the bolts (3) that hold it.
5. Install lines (4), (5) and (6) on the steering control valve. Install bolts and flanges (2).
6. Install lines (1) on the hoist control valve.
7. Fill the hydraulic tank to the correct level. See the Maintenance Guide.
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Disassemble Steering Control Valve
Start By:
remove steering control valve
1. Remove bolts (2) and body (1).
2. Remove and inspect seals (4) from the valve body (3).
3. Remove seat (7). Remove and inspect seal (6).
4. Remove and inspect small O-ring seals (5) from the body (3).
5. Remove plug, shims, spring (8) and valve (9) from the body (3).
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6. Remove