Main Control Valve - Remove and Install
Show/hide table
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 421-5662 | Lifting Eye Assembly | 2 |
Start By:
- Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".
- Release the pressure in the implement hydraulic system. Refer to Disassembly and Assembly, "System Pressure - Release".
Show/hide table
 |
|
Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
Show/hide table
| NOTICE |
|---|
|
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
- Remove cover (1). Repeat for the opposite side.
Show/hide table
Illustration 2 g03397540 - Disconnect harness assembly (2).
Show/hide table
Illustration 3 g03397574 Show/hide table
Illustration 4 g03397578 - Remove bolts (3) and pull harness (2) through cover (4). Remove cover (4). Remove front cover (5).
Show/hide table
Illustration 5 g03397639 Show/hide table
Illustration 6 g03397588 - Install Tooling (A) and a suitable lifting device to guard (7). The weight of guard (7) is approximately
45 kg (100 lb) . Remove bolts (6). Remove guard (7).Show/hide table
Illustration 7 g03397717 - Disconnect tubes (7) and (8). Remove bolt (9). Disconnect harness assembly (10).
Show/hide table
Illustration 8 g03398244 - Disconnect two hose assemblies (11). Disconnect hose assemblies (12) and (13).
Show/hide table
Illustration 9 g03398256 - Disconnect tubes (14). Disconnect harness assembly (15).
Show/hide table
Illustration 10 g03398268 - Install Tooling (A) and a suitable lifting device to main control valve (16). The weight of main control valve (16) is approximately
73kg (160 lb) . - Remove bolts (17) and remove main control valve (16).
Show/hide table
| |
| Illustration 1 | g03397527 |
- Install main control valve (16) in the reverse order of removal.
Caterpillar Information System:
Cat MT4400D AC Off-Highway Truck VIMSTM 3G and Truck Payload Measurement System (TPMS) VIMSpc Software
259D, 279D and 289D Compact Track Loaders, 257D, 277D and 287D Multi Terrain Loaders and 236D, 242D, 246D and 262D Skid Steer Loaders Engine Supplement Air Cleaner - Remove and Install
988K Wheel Loader, 834K Wheel Dozer and 836K Compactor Machine Systems Main Control Valve - Disassemble
CB34B, CB34B XW, CC34B and CB36B Vibratory Utility Compactors Propel System Neutral Start Switch - Test and Adjust
Cat® Detect and Cat® MineStar System Onboard Configuration for the MS352 Satellite Receiver Receiver Connection
2014/07/18 Procedures to Update or Install the Lincoln or Groeneveld Auto Lubrication Systems on Certain 777G Off-Highway Trucks are Now Available {1408, 7510, 7513, 7516, 7540}
834K Wheel Dozer and 836K Landfill Compactor Machine Systems Main Relief Valve - Test and Adjust
Procedure to Install the Groeneveld Auto Lubrication System on Certain 777G Off-Highway Trucks{1408, 7510, 7513, 7516, 7540} Procedure to Install the Groeneveld Auto Lubrication System on Certain 777G Off-Highway Trucks{1408, 7510, 7513, 7516, 7540}
Installation of the 388-8284 Camera Kit (Back-Up) {1435, 7450, 7490} Installation of the 388-8284 Camera Kit (Back-Up) {1435, 7450, 7490}
Cat MT4400D AC Off-Highway Truck VIMSTM 3G and Truck Payload Measurement System (TPMS) Display Modules
Installing the 388-8283 Radio Installation Gp (Radio Ready) {7268, 7329, 7338, 7338} Installing the 388-8283 Radio Installation Gp (Radio Ready) {7268, 7329, 7338, 7338}
834K Wheel Dozer and 836K Landfill Compactor Machine Systems Lift and Tilt Cylinder Drift - Check
D-Series and D2-Series Compact Track Loaders (CTL), Multi-Terrain Loaders (MTL), and Skid Steer Loaders (SSL) Engine Air Filter Primary Element - Clean/Replace
D-Series and D2-Series Compact Track Loaders (CTL), Multi-Terrain Loaders (MTL), and Skid Steer Loaders (SSL) Rollover Protective Structure (ROPS) and Falling Object Protective Structure (FOPS) - Inspect
Installing the 388-8285 Engine Speed Control Pedal {1269} Installing the 388-8285 Engine Speed Control Pedal {1269}
2014/06/20 New Filter Bypass Switch Is Now Used on Certain Large Off-Highway Trucks {1435, 3067, 5068}
Installation instructions for the 390-0349 Snow Blade and Mounting Gp On Certain Motor Graders{6158, 6159} Installation instructions for the 390-0349 Snow Blade and Mounting Gp On Certain Motor Graders{6158, 6159}
834K Wheel Dozer Systems and 836K Landfill Compactor Systems Lift Cylinder
Muffler Support Bolts May Loosen on Certain 583T and 587T Pipelayers{1062} Muffler Support Bolts May Loosen on Certain 583T and 587T Pipelayers{1062}
Procedure to Install 442-4755 Fuel Tank Gp on Certain Vibratory Soil Compactors{1273} Procedure to Install 442-4755 Fuel Tank Gp on Certain Vibratory Soil Compactors{1273}
988K Wheel Loader, 834K Wheel Dozer and 836K Compactor Machine Systems Main Control Valve - Assemble
2013/08/05 A New Tailgate Pivot Linkage Arrangement Is Now Used on Certain 730 EJECTOR Articulated Trucks {7271}
834K Wheel Dozer Systems and 836K Landfill Compactor Systems Electrohydraulic Control
416F2, 420F2 and 430F2 Backhoe Loaders Joystick Control - Loader