CATERPILLAR 320D2 EXCAVATOR WATER SEPARATOR AND FUEL FILTER (MASTER) - REMOVE AND INSTALL

 This article describes the CATERPILLAR 320D2 EXCAVATOR Water Separator and Fuel Filter (Main) - Removal and Installation

 

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  1. Open the right side access door

 

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 2. Drain the fuel filter (4).

  3. Disconnect the hose assembly (1). Disconnect the hose assembly (3). 

Use Tool (A) to remove the fuel filter (4).  

Remove Fuel Filter Base (2)

 Installation Steps 1. Install the fuel filter base (2)

 in the reverse order of removal

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CATERPILLAR 320D2 EXCAVATOR DNP Sprocket - Removal and Installation

 1. Position the machine on a suitable stand under the first roller as shown. Make sure the kingpin is above the centerline of the sprocket.

 

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2. Detach the track. Refer to Disassembly and Assembly, "Track - Detach".

 

  3. Remove the bolts (1) that secure the sprocket (2) to the final drive.

 

 

  4. Attach Tool (A) and a suitable lifting device to the sprocket (2) as shown. 

5. Remove the sprocket (2). The weight of the sprocket (2) is approximately 40 kg (90 lb).

 

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 Installation Procedure

 

 

NOTE: Use several washers between Tool (A) and the sprocket (2). This will prevent damage to the sprocket.

 

 

1. Attach Tool (A) to the sprocket (2) as shown. The weight of the sprocket (2) is approximately 40 kg (90 lb). 

 

 2. Place the sprocket (2) on the final drive.

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 3. Install the bolts (1). Tighten the bolts (1) in alternating order to a torque of 530 ± 70 N·m (390 ± 50 lb ft). 

 4. Remove Tooling (A). 

 5. Attach the track. Refer to Disassembly and Assembly, "Track - Attach". 

 6. Remove the frame from the front rollers.

Caterpillar 320D2 Excavator Universal Floating Seal - Installation

 Duo-Cone Universal Floating Seal - Installation

 

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Installation Procedures Proper procedures must be used when installing and assembling the DuoCone seal. The slightest error in the assembly or installation of the seal components can result in damage to the DuoCone seal. Refer to Special Instructions, SEHS8364, "Assembly and Installation of Universal Duo-Cone Seals" Refer to Special Instructions, SEHS8484, "Tooling and Technical Data Sheets for Universal DuoCone Seals" 

 

 Correct Assembly of Universal DuoCone Seals

 

 

 

 Assembly and installation procedures

 

 

Avoid prolonged skin contact with isopropyl alcohol. Try to avoid breathing air in confined spaces and do not smoke. Isopropyl alcohol is flammable. Do not use near open flames, welding operations, or around heated surfaces exceeding 482°C (900°F).

 

 1. Remove any oil film, dust or other foreign matter from the following components: ◦ Rubber toric ring (2) ◦ Housing ramp (4) ◦ Seal bevel (7) ◦ Housing retaining lip (3) ◦ Seal retaining lip (8) ◦ Seal housing (5)

 

NOTE: The seals have very sharp edges. Injuries should be avoided by wearing protective gloves. Use the cleaner in Tool (B) or isopropyl alcohol or other approved cleaner. Wipe with a clean, lint-free cloth. All parts should be completely dry before continuing work. NOTE: Before assembling both seals (1) into final position, be careful to prevent oil from contacting the rubber toric ring (2), the housing ramp (4), or the seal ramp (7). 

 

 

 

 

5. Ensure that the lower part of the rubber toric ring (2) is still wet. Using the installation tool (9), press the seal (1) and rubber toric ring (2) straight against the seal housing (5). When pressing down on the smaller diameter toric ring, ensure that you apply sudden and even pressure. Press the rubber toric ring (2) under the housing retaining lip (3) that is part of the seal housing (5). Install the larger diameter rubber toric ring using the following steps: ◦ Push the rubber toric ring over the seal retaining lip on one side. ◦ Use a rubber hammer to tap the installation tool on the opposite side of the rubber toric ring. Keep tapping until the rubber toric ring slides over the housing seal retaining lip.

 

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Tool (A) (B) Assembly height (10) Dial gauge (11) Collet assembly (12) Dial gauge holder (plastic) (13) Contact 

 

 

 7. Never adjust the seal (1) by pushing or pulling it. Use the installation tool (9) to press down the seal.

 

 

 

 

 

 

 

 8. If the seal is not fully wetted or if the housing retaining lip (3) that is part of the seal housing (5) has burrs or fins, the rubber toric ring (2) may have twisted during installation. Misalignment, twisting, and bulging of the rubber toric ring will result in damage to the DuoCone seal. If improper installation is suspected, remove the toric ring from the housing and repeat the installation procedure.

 

 

9. Use a lint-free cloth to wipe the face of the seal (6) that is part of the seal (1). No particles should remain on the sealing surface. A small piece of paper towel can separate the face of the seal and cause leakage. Note: The rubber toric ring (2) must not slip on the bevel of the seal (1) or the bevel of the seal housing (5). To prevent slipping, allow sufficient time for the lubricant to evaporate before continuing the procedure. Once the rubber toric ring is properly positioned, it will only roll on the bevel.

 

 

 

 10. Apply a thin coat of clean oil to the entire face of the seal ring on one or both seals. Use a lint-free cloth or brush to distribute the oil evenly. Be careful not to allow the oil to contact the rubber toric ring. Lubricate the seal faces with the same lubricant used in assembly. The oil used in assembly may have dye added to it. Lubricate the seal faces with the same lubricant without the dye.

 

 11. Make sure the two seal housings (5) are properly aligned and concentric. Move the parts carefully and slowly. Note: Do not press the seal and seal housing together suddenly. If the seal parts are pressed together suddenly, it may cause scratching or cracking of the seal parts. 

 

 12. Tighten the bolts when the parts are correctly positioned.

 

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How to Release Hydraulic Pressure from Multiple Hydraulic Circuits on the 320D2 EXCAVATOR DNP

  Perform the following steps to release hydraulic pressure from multiple hydraulic circuits on the main hydraulic system. 

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1. Park the machine on level ground. 

 2. Fully retract the boom cylinder linkage. Position the bucket so that it is parallel to the ground. Lower the boom until the bucket is level on the ground. Refer to Figure 1. 

3. Shut off the engine. 

4. Turn the engine start switch to the on position, but do not start the engine. 

5. Place the hydraulic start control lever in the unlocked position. 

 6. Move the joystick or pedal to the full position for only the hydraulic circuit that needs service. This will release high pressure only in that circuit. This will also release any pressure that may be present in the pilot hydraulic circuit. Note: If the hydraulic circuit that needs service requires an actuated operating switch, actuate the appropriate operating switch on the hydraulic circuit. 

 7. Place the hydraulic start control lever in the locked position. 

 8. Start the engine. 

 9. Place the hydraulic start control lever in the unlocked position. Do not move any joysticks or pedals from the neutral position during this step. Do not activate any switches during this step. 

10. Move the hydraulic start control lever back to the locked position. 

 

 

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 11. Shut down the engine. 

12. Repeat steps 4 through 11 for each hydraulic circuit that needs service. 

13. After relieving hydraulic pressure in each target hydraulic circuit, place the hydraulic start control lever in the locked position. 

14. Turn the engine start switch to the OFF position. 

 15. Slowly loosen the filler plug on the hydraulic tank to relieve pressure. The filler plug should remain loosened for at least 45 seconds. This will relieve any pressure that may be in the return hydraulic circuit. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... Friday, October 26, 2018 

16. Tighten the filler plug on the hydraulic oil tank to the specified torque. 

 17. The pressure in the multiple hydraulic circuits that need to be repaired has now been relieved and the lines and components can be disconnected or removed from these hydraulic circuits.

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How to solve the low oil pressure fault of Caterpillar excavator

  

 Solution to the low oil pressure fault of Caterpillar excavator

 

 

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  During the use of excavators, many drivers reported symptoms of low oil pressure in excavators.

During the use of excavators, many drivers reported symptoms of low oil pressure in excavators. 

Cause analysis: 1. Insufficient oil

 2. Oil pump does not rotate

 3. Oil radiator leaks 

4. Pressure sensor fails or oil channel is blocked 

 5. Inappropriate oil brand 

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Solution: 

 

 1 Increase the oil volume, 

 

2 Disassemble and check the oil pump to check its wear condition

 

 3 Repair the oil radiator 

 

4 Repair the pressure sensor 

 

5 Check whether the recent oil brand matches your machine.

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What to do if the oil temperature of Carter excavator 320C is too high?

  What to do if the oil temperature of Carter excavator 320C is too high?

 

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During the use of excavators, many drivers have encountered the "problem of too high oil temperature", and even due to the high oil temperature, "the machine produces thermal deformation, the moving parts with different thermal expansion coefficients in the hydraulic components are stuck due to the smaller matching clearance, causing failure of movement, affecting the transmission accuracy of the hydraulic system, and causing the working quality of the parts to deteriorate." A series of problems such as "Analysis of causes: 

1 The hydraulic oil of the excavator has not been replaced for too long 

 2 The hydraulic pump has failed 

 3 The computer board is faulty or incorrectly set 

 4 The oil tank capacity is too small, the heat dissipation area is not enough, the oil cooling device is not installed, or the cooling device is too small  

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Solution: 1 If your excavator hydraulic oil has not been replaced for more than 6000 hours, you must replace the hydraulic oil 

 2 Have professionals inspect and debug the hydraulic pump 

 3 Reset or repair the computer board

 4 Install a cooling device with a capacity that matches the oil tank. 

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how to solve the caterpillar 311B EXCAVATOR 2LS MID 161 - CID 0168 - FMI 01 fault

 This article describes how to solve the caterpillar 311B EXCAVATOR 2LS MID 161 - CID 0168 - FMI 01 fault

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 Conditions that Generate This Code: When the PL522 and 523 detect a battery voltage below 11 VDC, the system will log this diagnostic code.

 Test Step 1. Check the system voltage at the 70-pin connector on the PL522 and 523 modules.

Start the engine and run the engine at high idle for 5 to 10 minutes. Measure the system voltage between the "Unswitched Power" and "Ground" contacts. Pin 52 is the "Unswitched Power" terminal and pin 65 is the "Ground" terminal. 

Expected Results: The voltage on a 24 VDC system is 27 VDC to 29 VDC. The voltage on a 12 VDC system is 13 VDC to 15 VDC.

Results: • OK - The voltage is correct. Clear this diagnostic code and check for other diagnostic codes. Stop • Abnormal - The voltage is not normal. Go to Test Step 2. Test Step 2. Check the Alternator. 

Run the engine at high idle for 5 to 10 minutes. Measure the voltage output at the battery terminals.

Expected Results: For a 24 VDC system, the voltage should be in the range of 27 VDC to 29 VDC. For a 12 VDC system, the voltage should be in the range of 13 VDC to 15 VDC. 

Results: • OK - The voltage is correct. Go to Test Step 3.

 • NOT OK - The voltage is not normal.  

 Engine ECM Test Cable for Caterpillar C/D Series

 

 Repair: Repair or replace the alternator. 311B TRACK-TYPE EXCAVATORS 2LS00001-UP (MACHINE) POWERED BY ... Page 1 of 2

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Stop Test Step 3. Check Battery Voltage. Turn the key switch to the OFF position. Measure the voltage at the battery terminals. Always wear appropriate personal protective equipment.

Expected Results: The voltage should be between 12 VDC and 15 VDC for a 12 VDC system. The voltage should be between 24 VDC and 27 VDC for a 24 VDC system.

Results: • OK - The voltage is between 12 VDC and 15 VDC, or the voltage is between 24 VDC and 27 VDC.

Repair: PL522 or 523 may be malfunctioning. Recheck the system before replacing PL522 or 523. PL522 or 523 is rarely the source of the fault. Refer to Systems Operation, Troubleshooting, Testing and Adjusting, "Electronic Control Module (ECM) - Replacement". After replacing PL522 or 523, recheck the system and check the status of the diagnostic code.

STOP • NOT OK - The voltage is not between 12 VDC and 15 VDC, or the voltage is not between 24 VDC and 27 VDC.

Repair: Refer to Special Instructions, REHS0354, "Charging System Troubleshooting". If the condition does not improve, PL522 or 523 may be malfunctioning. Recheck the system before replacing PL522 or 523. PL522 or 523 is rarely the source of the fault. Refer to Systems Operation, Troubleshooting, Testing and Adjusting, 

"Electronic Control Module (ECM) - Replace". After replacing PL522 or 523, recheck the system and check the status of the diagnostic code. STOP     

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