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Pruebas y Ajustes308B, 311B, 312B, 315B, 317B, 318B, 320B, 322B, 325B, 330B, M325B and W330BExcavators Engine and Pump Control

Engine Speed Dial Setting - CheckSMCS - 5721-535-VF

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Producto: EXCAVATORModelo: 320B L EXCAVATOR 4MR00001Configuración: SUPPLEMENTARY SERVICE INFORMATION (DISASSEMBLY &ASSEMBLY) F 4MR00001-UP (MACHINE)

Número de medio -RENR1998-06 Fecha de publicación -01/10/2004 Fecha de actualización -06/10/2004

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Table 1

Settings Of The Engine Speed Dial (RPM)

Dial Setting 311B 312B 315B 317B 318B 320B 322B 325B 330B

1 850 850 900 900 930 900 800 800 720

2 1100 1100 1100 1100 1100 1020 970 950 850

3 1250 1250 1250 1250 1300 1160 1130 1100 1000

4 1380 1400 1400 1400 1460 1300 1300 1250 1150

5 1500 1550 1550 1550 1620 1470 1460 1425 1300

6 1600 1700 1700 1700 1780 1590 1610 1600 1450

7 1700 1800 1850 1850 1940 1700 1750 1750 1600

8 1800 1900 2000 2000 2100 1800 1890 1900 1750

9 1900 2000 2150 2150 2260 1900 2030 2050 1850

10 1980 2080 2200 2300 2420 1970 2120 2180 1960

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1. Enter service code "1b". The following information will be displayed: the name of the model,type of engine and type of control levers.

"1b 25 CH" is an example.

25 - This number indicates 325B.

C - This letter indicates a Caterpillar engine.

H - This letter indicates the type of hydraulic control levers.

Note: When "H" is being displayed in the second position from the right, the display willindicate a "MHI mode" type of engine.

Enter service code "1A". The fine control mode switch (25) is pressed in order to move the numberthat is flashing to the second position from the left. The boom priority mode switch (23) is pusheduntil a flashing "A" appears. The position of the speed dial is shown by the third number from theleft. The three numbers from the left will show the engine rpm that is multiplied by 10. Move thespeed dial to the different positions in order to read the target rpm for that speed position.

This function is used to verify that the setting of the engine speed at each position of the enginespeed dial corresponds to the factory settings of the engine speed. For the proper engine RPM, referto the chart.

Copyright 1993 - 2011 Caterpillar Inc.Todos los derechos reservados.Red privada para licenciados del SIS.

Thu May 26 07:43:55 EST 2011

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Digital Output On/Off - TestSMCS - 1931-081-OJ

Note: The 315B does not have channel 1.

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Table 1

Digital Output Test

Channel No. Display ON/OFF Output Signal Name Character

1 Spare Solenoid 1 621

2 Trenching Solenoid 622

3 Boom Raise Solenoid 623

4 Automatic Travel Speed Change Solenoid 624

5 Travel Alarm 625

6 Spare Solenoid 2 626

Page 1 of 3SUPPLEMENTARY SERVICE INFORMATION (DISASSEMBLY & ASSEMBLY...






This function displays the condition of the digital outputs that are connected to the controller.

1. Enter service code 62. The character display shows the number of the channel first. Then, "on"or "oF" is displayed.

2. The fine control mode switch (25) is depressed in order to shift the blinking position of thecharacter display to the fourth character position from the right.

3. When the boom priority mode switch (23) is depressed the channel numbers are displayed inascending order.

4. When the swing priority mode switch (24) is depressed the channel numbers are displayed indescending order.

5. The travel alarm cancel switch (22) is pressed in order to change the digital output between"on" and "oF".

Illustration 1 g00662996








Thu May 26 07:44:23 EST 2011








Governor Actuator - ReplaceSMCS - 1716-510

Replacement Of The Governor Actuator And Adjustment OfThe Governor Actuator

315B, 322B, 325B, And 330B

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Illustration 1 g00670058Attachment Of The Cable For The Governor Actuator ( 315B, 322B, 325B And 330B)

(1) Accelerator Cable

(2) Nut

(3) Support

(4) Bellows

(5) Lever







1. Turn the nut (2) and the locknut of the accelerator cable (1) in the counterclockwise directionuntil the nuts are separated.

2. Insert the threaded "L" end of the accelerator cable (1) through the hole in the lever (5). Installthe nut in order to hold the cable in position.

3. Insert the other threaded portion of the accelerator cable (1) into the notch of the support (3) .

4. Turn the lever (5) in the counterclockwise direction to the position of high idle.

5. Hold the lever (5) against the position of high idle stop. Then, turn the nut (2) clockwise untilthe slack is removed from the bellows (4). The nut (2) should be tightened for approximatelytwo turns more.

6. Tighten the locknut against the support (3) .

7. Ensure that the nut (2) remains in position while the locknut is tightened against the support(3) .

8. Reinstall the two clamps to the accelerator cable (1). Do not allow the cable (1) to twist.

Note: Ensure that the governor lever is in contact with the high idle stop. Also, ensure that thenut (2) is correctly tightened in order to ensure that the accelerator cable has the correcttension. The setting of the engine speed or an overload condition of the governor actuatorcould result if the cable is not tightened correctly.

Note: When the current governor is being used, the following conditions will be applicable:

a. When the accelerator cable (1) is disconnected from the governor lever and the enginespeed dial is in a position rather than 10, the initial calibration procedure is required.

b. No initial setting is required, if the accelerator cable (1) is disconnected from thegovernor lever and the engine speed dial is positioned at 10. However, the initial settingis required, when electricity is sent to the governor actuator.

311B, 312B And 320B

Illustration 2 g00670066Governor Actuator







1. Turn the nut (8) and turn the locknut (10) of the accelerator cable (2) counterclockwise untilthe nuts are separated.

2. Insert the threaded end "L" of the accelerator cable (2) and the decelerator cable (6) throughthe hole in lever (5). Install a nut in order to hold the cable in position.

3. Insert the other threaded portion of the accelerator cable (2) into the notch of the support (3).

4. Turn the lever (5) counterclockwise to the position of high idle stop.

5. Hold the lever (5) against the high idle stop. Turn the nut (8) clockwise until the slack isremoved from bellows (9). The nut (8) should be tightened for approximately two turns more.

(1) Governor Actuator


Illustration 3 g00670071Cable For The Governor Actuator


(3) Support

(4) Bellows

(5) Lever

(6) Decelerator Cable

(7) Nut

(8) Nut

(9) Bellows

(10) Locknut

(11) Locknut







6. Tighten the locknut (10) against the support (3). Ensure that the nut (8) remains in position on the threaded portion of the accelerator cable (2) while the locknut is being tightened againstthe support (3).

7. Insert the other threaded portion of the decelerator cable (6) into the notch of the support (3) .

8. Hold the lever (5) against the high idle stop and turn the nut (7) clockwise until the slack isremoved from the bellows (4). The nut (7) should be loosened for two turns more.

9. Tighten the locknut (11) against the support (3). Ensure that the nut (7) remains in positionwhile the nut (7) is tightened against the support (3) .

Note: Ensure that the governor lever is in contact with the high idle stop. Also, ensure that thenut (8) is correctly tightened in order to ensure that the accelerator cable (2) has the correcttension. The setting of the engine speed and an overload of the governor actuator could result,if the cable is not correctly tightened.

Note: When the current governor actuator is being used the following conditions areapplicable:

a. The initial setting should always be performed when the governor actuator is beingsupplied with power.

Note: If the current governor, that is being used, is a governor from spare parts, then do not send electricity to the governor. The initial setting of the governor should always beperformed because the governor may have received electricity.

Calibration Of The Governor Actuator

Note: For more information, see the topic Testing And Adjusting, "Governor Actuator".

1. Start the engine. Perform the calibration procedure for the governor actuator.

2. Clear the error log, after the calibration procedure has been correctly performed.

Note: For more information, see Testing And Adjusting, "Error Log".


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Governor Actuator - CalibrateSMCS - 1716-524

This function allows the controller to memorize the corresponding data from the rotation angles ofthe governor actuator and the no-load engine speed. The controller will determine the target position

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Illustration 1 g00663002Monitor Panel







of the governor actuator.

This procedure must be performed when any of the following components have been replaced or thecomponents are reinstalled: The governor actuator, the accelerator cable and the controller.

The temperature of the hydraulic oil must be at approximately 50 °C (122 °F).

1. Enter service code 70. The character display shows the following example: "70 P00". Thismeans "before calibration".

2. Depress the travel alarm cancel switch (22). The character display shows the followingexample: 7001This means "governor actuator is moving to the initial position".

3. When the character display shows the following example, the governor actuator has completeda movement to an initial position: "70 PSP".

4. At this condition, install the accelerator cable properly, if the cable is not installed.

5. Start the engine.

6. Depress the travel alarm cancel switch (22) again. The calibration for the governor actuatorwill start. During the calibration, the character display displays the following codes:

Table 1

Calibration Codes For The Governor Actuator

Calibration Codes Description

70 P00 Before Calibration

7001 Shift The Governor Actuator (G/A) To The Initial Position

70 PSP The G/A Has Completed A Move To The Initial Position

7003 Search The G/A Position For High Idle

7004 Set The G/A Position For High Idle

7005 Collect The Data Of G/A Positions From The Engine Speed Dial 9 to2

7006 Search The G/A Positions For Low Idle

7007 Collect The Data Of G/A Positions From The Engine Speed DialPositions 9 To 2

7008 Confirm The G/A Position For High Idle

7009 Confirm The G/A Positions From The Engine Speed Dial Positions 9 To 1

7010 Confirm The G/A Positions From The Engine Speed Dial Positions 2 to 10







7. When the calibration has been completed, the character display shows "70 E nd".

Note: In order to stop the calibration in the middle of the process, the power mode switch (19)and travel alarm cancel switch (22) should be pressed and held simultaneously for 2 secondsor more.

8. An error will be present, if the governor actuator is moving to the initial position or beingcalibrated and the character display is showing the letter "H" in the fourth character positionfrom the right and not showing a character in the third character position from the right.Depress the travel alarm cancel switch (22). The error code is displayed on the right threecharacter positions. Refer to the following chart for details of the possible error codes.

9. When the calibration has been completed, the character display shows "70 E nd".

Note: In order to stop the calibration in the middle of the process, the power mode switch (19)and the travel alarm cancel switch (22) are pressed and held simultaneously for 2 seconds ormore.

10. An error will be present, if the governor actuator is moving to the initial position or beingcalibrated and the character display is showing the letter "H" in the fourth character positionfrom the right and not showing a character in the third character position from the right.Depress the travel alarm cancel switch (22). The error code will be displayed in the right threecharacter positions. Refer to the following chart for the details of the possible error codes.

7011 Collect The Data For The Engine Speed Feedback Control

70 End Calibration Is Complete

Table 2

Error CodeCharacter

Display Error Description

1 70 HF 01 Engine Stops

2 70 HF 02 Speed Sensor Is Abnormal

3 70 HF 03 Load Is Applied

4 70 HF 04 Faster Than The High Idle Speed

5 70 HF 05 Slower Than The Low Idle Engine Speed

6 70 HF 06 Governor Actuator Feedback

7 70 HF 07 Governor Actuator Feedback Sensor Circuit Is ShortedTo Ground







11. Perform the following operations when the character display shows "70 Hd 00".

a. Depress the fine control mode switch and hold the fine control mode switch (25) untilthe character display stops blinking.

b. Depress the boom priority mode switch (23) or the swing priority mode switch (24) inorder to select the data that is used as the calibration data.

c. Depress the boom priority mode switch (23) in order to select the previous calibrationdata.

d. Depress the swing priority mode switch in order to select the default calibration data.

e. Depress the travel alarm cancel switch (22) in order to memorize the calibration datathat has been selected.

12. When the calibration is completed, the character display may flash "70End". Then, a numberwill be displayed. The cable end for the governor actuator is too loose by 6 full turns, if a setof numbers that is similar to "70 06" is displayed. The numbers on the right side indicate thetotal number of turns. The display numbers in each position can be from 1 through 0.

The cable end of the governor actuator is too tight by 6 full turns, if a set of numbers that is similarto "70 - 06" appears in the fourth position from the left with a minus sign. Again, the numbers on theright side indicate the total number of turns.

The four numbers on the right side will indicate the actual engine speed, if a set of numbers that aresimilar to "70 20 13" appear in the third set. This code means that the engine speed is below thecorrect specifications for the high idle speed of the engine.

8 70 HF 08 Feedback Signal Of Governor Actuator Is Abnormal

9 70 HF 09 High idle engine speed is lower than the Engine SpeedDial Setting 8 plus 50 rpm

70 Hd 00 Retry Error Or Too Much Hysteresis


Thu May 26 07:46:31 EST 2011







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