M318F, M320F and M322F Wheeled Excavators Hydraulic System Caterpillar


Location of Components (Machine System)

Usage:

M320F F2W

Anti Drift Valve



Illustration 1g03703266
Top left view of machine
(1) Anti drift valve

Anti drift valve (1) is located in front of the main control valve on the right side.

Auto-Brake Valve



Illustration 2g03709909
Bottom view of cab
(1) Auto-brake valve

Auto-brake valve (1) is mounted under the cab between the two brake accumulators.

Blade Cylinders



Illustration 3g03701630
Rear right view of machine
(1) Blade cylinders

Blade cylinders (1) are mounted between the blade and blade bracket.

Blade Shutoff Valve



Illustration 4g03703249
Bottom left side view of machine
(1) Blade shutoff valve

Blade shutoff valve (1) is located near the left side of the transmission.

Boom Cylinders



Illustration 5g03701621
Front right view of machine
(1) Boom cylinders

Boom cylinders (1) are mounted to the front of the machine.

Boom Lowering Control Valve



Illustration 6g03702589
Front view of machine
(1) Boom lowering control valves

Boom lowering control valves (1) are located on the head end of each boom cylinder.

Brake Accumulators



Illustration 7g03777939
Bottom view of cab
(1) Brake accumulators

Brake accumulators (1) are mounted to the bottom side of the cab.

Brake Pedal



Illustration 8g03701622
Top view of cab

Brake pedal (1) is located on the right side of the steering wheel, left of the travel pedal.

Brake Valve



Illustration 9g03777940
Bottom view of cab
(1) Brake valve

Brake valve (1) is mounted to the bottom side of the cab.

Bucket Cylinder



Illustration 10g03701628
Front right view
(1) Bucket cylinder

Bucket cylinder (1) is mounted on top of the stick.

Bucket Cylinder Diverter Valves



Illustration 11g03701632
Front left view
(1) Bucket cylinder diverter valves

Bucket cylinder diverter valves (1) are mounted on the head end of the bucket cylinder.

Charge Filter (Swing Pump)



Illustration 12g03701623
Right view of machine
(1) Charge filter (swing pump)

Charge filter (1) for the swing pump is located in the pump compartment on the right side on the swing pump.

Diagnostic Test Ports



Illustration 13g03702670
Left side view of machine
(1) Diagnostic test ports

Diagnostic test ports (1) are located in the step compartment behind the cab.

Electronic Control Modules

Engine ECM



Illustration 14g03703172
Left side view of engine
(1) Engine ECM

Engine ECM (1) is mounted on the left rear side of the engine.

Implement ECM



Illustration 15g03703173
Rear left view of machine
(1) Implement ECM

Implement ECM (1) is located in front of the counter weight on the left side of the machine.

Machine ECM



Illustration 16g03701667
Left side view of machine
(1) Machine ECM

Machine ECM (1) is located in front of the counter weight on the left side of the machine.

Fan Motor



Illustration 17g03703176
Front left view
(1) Fan motor

Fan motor (1) is located behind the cooler and fan in front of the engine.

Fan Pump



Illustration 18g03703177
Front left view
(1) Fan pump

Fan pump (1) is mounted on the front left side of the engine.

Final Drive



Illustration 19g03702885
Rear right view of machine
(1) Final drives

Final drives (1) are located in the center of each wheel.

Fore Boom Cylinder



Illustration 20g03701658
Front right view of machine
(1) Fore boom cylinder

Fore boom cylinder (1) is mounted to the stub boom.

Fore Boom Lowering Control Valve



Illustration 21g03701660
Front view of machine
(1) Fore boom lowering control valve

Fore boom lowering control valve (1) is mounted on the head end of the fore boom cylinder.

Fore Boom Pedal



Illustration 22g03701661
Top view of cab
(1) Fore boom pedal

Fore boom pedal (1) is located on the left side of the steering wheel, right of the work tool pedal.

Hydraulic Oil Cooler



Illustration 23g03703084
Front right view of machine
(1) Hydraulic oil cooler

Hydraulic oil cooler (1) is located in front of the engine.

Hydraulic Oil Tank



Illustration 24g03701633
Top left side view of machine
(1) Hydraulic oil tank

Hydraulic oil tank (1) is located to the rear of the machine behind the main control valve.

Joystick Controls



Illustration 25g03701635
Top view of cab
(1) Joystick controls

Joystick controls (1) are located next to the seat.

Joystick Pattern Change Valve



Illustration 26g03702671
Left side view of machine
(1) Joystick pattern change valve

Joystick pattern change valve (1) is located in the step compartment behind the cab.

Main Control Valve



Illustration 27g03701636
Top left view of machine
(1) Main control valve

Main control valve (1) is located between the hydraulic oil tank and the boom.

Medium Pressure Pilot Pump



Illustration 28g03701640
Rear right side view of machine
(1) Medium pressure pilot pump

Medium pressure pilot pump (1) is located in the pump compartment and mounted behind the swing pump.

Main Pump



Illustration 29g03701626
Rear right side view of machine
(1) Main pump

Main pump (1) is located in the pump compartment behind the engine on the right side of the machine.

Medium Pressure Control Valve



Illustration 30g03702672
Left side view of machine
(1) Medium pressure control valve

Medium pressure control valve (1) is located behind the cab on the left side of the machine.

Operator Controls (Blade - Stabilizers)



Illustration 31g03701642
Top view of cab
(1) Control lever
(2) Rocker switches

Operator controls for the blade and stabilizers are located on the left side of the seat. Rocker switches (2) are used to lock out the selected component. Control lever (1) will operate the components that are not locked out.

Oscillating Cylinders



Illustration 32g03701643
Front right view of machine
(1) Oscillating cylinders

Oscillating cylinders (1) are located on each side of the frame just above the front axle.

Pilot Manifold



Illustration 33g03702673
Left side view of machine
(1) Pilot manifold

Pilot manifold (1) is located behind the cab on the left side of the machine.

Pilot Oil Filter



Illustration 34g03777941
Bottom side view of cab
(1) Pilot oil filter

Pilot oil filter (1) is mounted to the bottom side of the cab.

Quick Coupler Control Valve



Illustration 35g03702674
Left side view of machine
(1) Quick coupler control valve

Quick coupler control valve (1) is located on the left side of the machine under the main control valve.

Return Filter



Illustration 36g03701644
Top left view of machine
(1) Return filter

Return filter (1) is located on top of the hydraulic oil tank.

Ride Control Components

Accumulators



Illustration 37g03701645
Front view of machine
(1) Ride control accumulators

Ride control accumulators (1) are mounted to the boom cylinders.

Boom Lowering Control Valves



Illustration 38g03701627
Front view of machine
(1) Boom lowering control valves

Boom lowering control valves (1) are located on the head end of each boom cylinder.

Solenoid Valve and Manifold (Ride Control)



Illustration 39g03701662
Front view of machine
(1) Solenoid valve and manifold for ride control

Solenoid valve and manifold for ride control (1) is mounted on the left boom cylinder.

Service Brakes



Illustration 40g03702884
Left side view
(1) Service brake

Service brakes (1) are located in the center of each wheel behind the final drive.

Smart Boom Control Valve



Illustration 41g03703346
Top right side view of machine
(1) Smart boom control valve

Smart boom control valve (1) is located left of the main control valve.

Stabilizer Shutoff Valve



Illustration 42g03703245
Front bottom view of machine
(1) Stabilizer shutoff valve

Stabilizer shutoff valve (1) is mounted in the frame in front of the steer axle.

Stabilizer Cylinders



Illustration 43g03701648
Front right view of machine
(1) Stabilizer cylinders

Stabilizer cylinders (1) are mounted to the frame inside each stabilizer.

Steering Cylinder



Illustration 44g03701649
Bottom rear view of machine
(1) Steering cylinder

Steering cylinder (1) is mounted to the front differential housing.

Steering Lockout Switch



Illustration 45g03701647
Top view of cab
(1) Steering lockout switch

Steering lockout switch (1) is located behind the left joystick.

Steering Priority Valve



Illustration 46g03777943
Bottom view of cab
(1) Steering priority valve

Steering priority valve (1) is mounted under the cab.

Steering Valve



Illustration 47g03777944
Bottom view of cab
(1) Steering valve

Steering valve (1) is mounted to the steering column under the cab.

Stick Cylinder



Illustration 48g03701651
Front right view
(1) Stick cylinder

Stick cylinder (1) is mounted on top of the fore boom.

Stick Lowering Control Valve



Illustration 49g03701652
Front left view
(1) Stick lowering control valve

Stick lowering control valve (1) is mounted on the side of the stick cylinder.

Swing Motor



Illustration 50g03702876
Top view of machine
(1) Swing motor

Swing motor (1) is mounted on top of the swing drive, between the main control valve and boom.

Swing Pump



Illustration 51g03701654
Rear right side view of machine
(1) Swing pump

Swing pump (1) is located in the pump compartment and mounted to the main pump.

Swivel



Illustration 52g03702877
Top view of machine
(1) Swivel

Swivel (1) is located in the center of the machine on the swing frame in front of the main control valve.

Transmission



Illustration 53g03701656
Bottom right side of machine
(1) Transmission

Transmission (1) is mounted to the rear differential.

Travel Motor



Illustration 54g03714084
Left side view
(1) Travel motor

Travel motor (1) is mounted to the transmission in front of the rear axle.

Travel Pedal



Illustration 55g03701657
Top view of cab
(1) Travel pedal

Travel pedal (1) is located on the right side of the steering wheel, right of the brake pedal.

Work Tool Manual Valves



Illustration 56g03701637
Top view
(1) Work tool manual valves

Work tool manual valves (1) are located on each side of the stick.

Work Tool Pedal



Illustration 57g03701625
Top view of cab
(1) Work tool pedal

Work tool pedal (1) is located on the left side of the steering wheel, left of the fore boom pedal.

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