M318F, M320F and M322F Wheeled Excavators Hydraulic System Caterpillar


Location of Components (Pilot System)

Usage:

M320F F2W


Illustration 1g03709359
Left side view of machine
(1) Fore boom pedal
(2) Joystick controls
(3) Boom load control valves
(4) Control lever (blade/stabilizer)
(5) Fore boom load control valve
(6) Pilot manifold
(7) Main control valve
(8) Hydraulic oil tank
(9) Swing pump
(10) Medium pressure pilot pump
(11) Implement ECM
(12) Machine ECM
(13) Joystick steering control valve
(14) Smart boom control valve
(15) Joystick pattern change valve
(16) Medium pressure manifold


Illustration 2g03709630
Bottom view of cab
(1) Fore boom pedal
(17) Steering valve
(18) Pilot oil filter
(19) Brake valve
(20) Steering priority valve
(21) Brake accumulator
(22) Auto-brake valve

Auto-Brake Valve



Illustration 3g03709744
Bottom view of cab
(22) Auto-brake valve

Auto-brake valve (22) is mounted under the cab, between the brake accumulators.

Boom Load Control Valve



Illustration 4g03709750
Front view of machine
(3) Boom load control valves

Boom load control valves (3) are located on the head end of each boom cylinder.

Brake Accumulators



Illustration 5g03709752
Bottom view of cab
(21) Brake accumulators

Brake accumulators (21) are mounted to the bottom side of the cab.

Brake Valve



Illustration 6g03709753
Bottom view of cab
(19) Brake valve

Brake valve (19) is mounted to the bottom side of the cab.

Fore Boom Load Control Valve



Illustration 7g03709754
Front view of machine
(5) Fore boom load control valve

Fore boom load control valve (5) is mounted on the head end of the fore boom cylinder.

Fore Boom Pedal



Illustration 8g03701661
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 Tank



Illustration 9g03709756
Top left side view of machine
(8) Hydraulic oil tank

Hydraulic oil tank (8) is located to the rear of the machine behind the main control valve.

Implement ECM



Illustration 10g03709761
Rear left view of machine
(11) Implement ECM

Implement ECM (11) is located in front of the counter weight on the left side of the machine.

Joystick Controls



Illustration 11g03709764
Top view of cab
(2) Joystick controls

Joystick controls (2) are located next to the seat.

Joystick Pattern Change Valve



Illustration 12g03709768
Left side view of machine
(15) Joystick pattern change valve

Joystick pattern change valve (15) is located in the step compartment behind the cab.

Machine ECM



Illustration 13g03709770
Left side view of machine
(12) Machine ECM

Machine ECM (12) is located in front of the counter weight on the left side of the machine.

Main Control Valve



Illustration 14g03709771
Top left view of machine
(7) Main control valve

Main control valve (7) is located between the hydraulic oil tank and the boom.

Medium Pressure Pilot Pump



Illustration 15g03709775
Rear right side view of machine
(10) Medium pressure pilot pump

Medium pressure pilot pump (10) is located in the pump compartment and mounted behind the swing pump.

Medium Pressure Control Valve



Illustration 16g03709777
Left side view of machine
(16) Medium pressure control valve

Medium pressure control valve (16) is located behind the cab on the left side of the machine.

Operator Controls (Blade - Stabilizers)



Illustration 17g03709781
Top view of cab
(4a) Control lever
(4b) Rocker switches

Operator controls for the blade and stabilizers are located on the left side of the seat. Rocker switches (4b) are used to lock out the selected component. Control lever (4a) will operate the components that are not locked out.

Pilot Manifold



Illustration 18g03709784
Left side view of machine
(6) Pilot manifold

Pilot manifold (6) is located behind the cab on the left side of the machine.

Pilot Oil Filter



Illustration 19g03709787
Bottom side view of cab
(18) Pilot oil filter

Pilot oil filter (18) is mounted to the bottom side of the cab.

Ride Control Components

Accumulators



Illustration 20g03709791
Front view of machine
(23) Ride control accumulators

Ride control accumulators (23) are mounted to the boom cylinders.

Boom Load Control Valves



Illustration 21g03709792
Front view of machine
(3) Boom load control valves

Boom load control valves (3) are located on the head end of each boom cylinder.

Smart Boom Control Valve



Illustration 22g03709795
Top right side view of machine
(14) Smart boom control valve

Smart boom control valve (14) is located left of the main control valve.

Steering Priority Valve



Illustration 23g03709798
Bottom view of cab
(20) Steering priority valve

Steering priority valve (20) is mounted under the cab.

Steering Valve



Illustration 24g03709802
Bottom view of cab
(17) Steering valve

Steering valve (17) is mounted to the steering column under the cab.

Stick Load Control Valve



Illustration 25g03709804
Front left view
(24) Stick load control valve

Stick load control valve (24) is mounted on the side of the stick cylinder.

Swing Pump



Illustration 26g03709807
Rear right side view of machine
(9) Swing pump

Swing pump (9) is located in the pump compartment and mounted to the main pump.

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