M313C, M315C, M316C, M318C and M322C Excavators and M318C and M322C Material Handlers Hydraulic System Caterpillar

Solenoid Valve (Swing Pump Proportional Relief) - Test and Adjust

Usage:

This procedure adjusts the current that is utilized to limit the pilot pressure that is utilized to upstroke the swing pump.

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Table 1
Required Tools
Part Number	Part Description	Qty
	IBM-COMPATIBLE personal computer with an installed current version of Caterpillar Electronic Technician software ⁽¹⁾	1
171-4400	Communication Adapter Gp	1
8T-0855	Pressure Gauge (0 to 4,000 kPa (0 to 580 psi))	1
6V-3989	Fitting (TEST)	3
6V-4143	Quick Connect Coupler	6
6V-3014	Hose As	3
6V-3965	Fitting As (TEST)	2
3B-6552	Elbow	2

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^( 1 )

Refer to Special Publication, JEBD3003, "ET Software CD and Getting Started Guide". Instructions for the use of Electronic Technician software are included in the software.

Prior to any adjustment, refer to the "Preparations" section in the Testing and Adjusting, "Operational Checks".

Machine Preparation

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Illustration 1	g01258851
The remote pressure taps are located behind the left rear access door. (1) Pressure tap (Proportional relief valve pressure (Swing pump))

Connect a 4000 kPa (580 psi) pressure gauge to pressure tap (1) .

Start the engine.

Place the backup switch in the OFF position.
Note: The backup switch is located behind a cover in the right console.

Place the swing lock pin in the LOCK position.

Test

Adjust the engine speed to HIGH IDLE by turning the engine speed dial to position 10.

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Illustration 2	g01259536
Soft Switch Panel (2) Power mode control

At the soft switch panel, select "Power Mode E" by pushing down on the button for power mode control (2). The first indicator light will illuminate when "Power Mode E" has been selected.

Lower the left console.

To check the power shift pressure, slowly move the joystick to full SWING RIGHT or to the full SWING LEFT position.

Check the pressure gauge reading at pressure tap (1) .
Refer to Testing and Adjusting, "Specifications" in this manual for the correct swing pump pressure (proportional relief valve) in "Mode E" for your machine.

If the pressure gauge reading at pressure tap (1) is not within specifications, proceed to the following procedure.

Adjust

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Illustration 3	g01259538
Right Side of Cab Seat (3) Service tool connector

Connect the Electronic Technician (ET) to service tool connector (3) of the machine.

Start Electronic Technician.

Select the "Engine ECM".

Select "OK".

Select "Service" from the main menu.

Select "Configuration".

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Illustration 4	g00918546
ET Configuration Screen

Select "Swing Pump Economy Mode Pwr Shift Pres Sol Current" under "Mode Control Configuration Parameters".

Select the "Change" button.

Enter a current value. Start with a current value of "0.33".

Select "OK".

Select "Yes".

Slowly move the joystick to the full SWING RIGHT or to the full SWING LEFT position.

Check the pressure gauge reading at pressure tap (1). If the pressure gauge reading is within specifications, proceed to Step 14. Otherwise, repeat Steps 8 through 13 until the correct pressure is reached.
Note: Always make the final pressure adjustments on the pressure rise.

Select "Swing Pump Power Mode Pwr Shift Pres Sol Current" under "Mode Control Configuration Parameters".

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Table 2
Swing Pump (Proportional Relief Valve)
Machine Model	Current Value (Ampere) for "Mode P"
M313C	0.170
M315C	0.170
M316C	0.170
M318C and M318C MH	0.090
M322C and M322C MH	0.090

Find the current value for "Mode P" that is shown in Table 2 for your machine. Add this current value to the current value that is displayed for "Swing Pump Economy Mode Pwr Shift Pres Sol Current" and enter the sum of these two current values for "Swing Pump Power Mode Pwr Shift Pres Sol Current".