Caterpillar Cat 312B and 312B L EXCAVATOR (Prefix 8JR) Service Repair Manual Instant Download

Service Repair Manual Models 312B and312BL Excavator

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 1/5 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312B L EXCAVATOR 8JR Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWERED BY 3064 ENGINE Disassembly and Assembly 3064 and 3066 Engines for Caterpillar Built Machines Media Number -SENR5553-10 Publication Date -01/05/2012 Date Updated -15/05/2012 i01146555 Engine Oil Pump - Install SMCS - 1304-012 Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 1P-0510 Driver Group 1 NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 2/5 Illustration 1 g00646132 1. Use Tool (A) to install the front oil seal (8) (not shown). Illustration 2 g00607962 2. Lower the temperature of the spindle (10). Install spindle (10) and idler gear (11) as an assembly in the front housing. Note: The temperature of the spindle is lowered in order to ease the installation of the spindle in the front housing. Illustration 3 g00607955 3. Install set screw (9) in the front housing. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

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312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 3/5 Illustration 4 g00607885 4. Lower the temperature of the drive gear assembly. Install drive gear (7) in the front housing. Note: The temperature of the drive gear assembly is lowered in order to ease the installation of the drive gear assembly in the front housing. Illustration 5 g00608012 Always wear protective gloves when handling parts that have been heated. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 4/5 5. Heat the oil pump gear up to 180 to 220 C (356 to 428 F). Support end (X) of the shaft (7) (drive gear). Install oil pump gear (6) onto the shaft. The end of the gear (Z) should be flush with the end of the shaft (Y) . Illustration 6 g00607770 6. Install driven gear (4) into the front housing (slip fit). Illustration 7 g00607826 7. Place gasket (3) and cover (2) in position on the front housing. Note: Ensure that the old gasket material is removed from the mating surfaces. 8. Install the washer and bolt (1) that secures the cover to the front housing. Tighten bolt (1) to a torque of 34 5 N m (25 4 lb ft). Refer to the Specifications Module, "Engine Oil Pump" for more information on the engine oil pump. End By: Install the front housing. Refer to Disassembly and Assembly, " Housing (Front) - Install". https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 1/2 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312B L EXCAVATOR 8JR Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWERED BY 3064 ENGINE Disassembly and Assembly 3064 and 3066 Engines for Caterpillar Built Machines Media Number -SENR5553-10 Publication Date -01/05/2012 Date Updated -15/05/2012 i01149671 Water Pump - Remove SMCS - 1361-011 Removal Procedure Start By: A. Remove V-belts. Refer to Disassembly and Assembly, "V-Belts - Remove and Install". At operating temperature, the engine coolant is hot and under pressure. Steam can cause personal injury. Check the coolant level only after the engine has been stopped and the filler cap is cool enough to touch with the bare hand. Remove the filler cap slowly to relieve pressure. Cooling system conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury. NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 2/2 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. 1. Drain the coolant from the cooling system into a suitable container for storage or disposal. Illustration 1 g00609950 2. Remove four bolts (1) that secure the water pump to the engine. 3. Remove water pump pulley (2) and water pump (3) as an unit from the engine. 4. Remove O-ring (4) (not shown) from water pump (3). Discard the old O-ring. Copyright 1993 - 2020 Caterpillar Inc. Mon Jun 22 22:02:27 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 1/4 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312B L EXCAVATOR 8JR Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWERED BY 3064 ENGINE Disassembly and Assembly 3064 and 3066 Engines for Caterpillar Built Machines Media Number -SENR5553-10 Publication Date -01/05/2012 Date Updated -15/05/2012 i01566087 Water Pump - Disassemble SMCS - 1361-015 Disassembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 1P-2321 Combination Puller 1 B 1P-1861 Retaining Ring Pliers 1 C 1P-0510 Driver Group 1 Start By: A. Remove the water pump. Refer to Disassembly and Assembly, "Water Pump - Remove". NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. Always wear protective gloves when handling parts that have been heated. Note: If the water pump is heated up to 80 C (176 F), the components can be easily removed. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 2/4 Illustration 1 g00610108 1. Remove four bolts (1) and the washers that secure the water pump pulley to the water pump. 2. Remove water pump pulley (2) from the water pump. Note: Check the groove for the V-belt of the water pump pulley for wear and damage. Replace the water pump pulley, if necessary. Note: Use Tool (C) during disassembly procedures of the water pump, which require the use of a press or a hammer. Illustration 2 g00610120 3. Use Tool (A) to remove flange (3) from the water pump. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 3/4 Illustration 3 g00610127 4. Use Tool (B) to remove retaining ring (4) from the water pump. Illustration 4 g00610140 5. Use a press and Tool (C) to remove shaft assembly (5) from water pump assembly (6) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 4/4 Illustration 5 g00813948 6. Remove impeller (8) from the shaft assembly (5) . Note: Check the impeller for wear, corrosion, and metal to metal contact. Replace the impeller, if necessary. 7. Remove the following items from shaft (9) : Bearing (10) Spacer (11) Bearing (12) Washer (13) 8. Once all of the components have been removed, then check shaft (9) for distortion. Replace the shaft, if necessary. 9. Check seal (14) for wear and damage. Use Tool (C) in order to remove the seal from the water pump housing, if necessary. Note: Replace the seal if any signs of leakage occurs during the operation of the water pump. 10. Replace O-ring (7) with a new O-ring. Copyright 1993 - 2020 Caterpillar Inc. Mon Jun 22 22:03:26 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 1/4 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312B L EXCAVATOR 8JR Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWERED BY 3064 ENGINE Disassembly and Assembly 3064 and 3066 Engines for Caterpillar Built Machines Media Number -SENR5553-10 Publication Date -01/05/2012 Date Updated -15/05/2012 i01566223 Water Pump - Assemble SMCS - 1361-016 Assembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 1P-0510 Driver Group 1 B 1P-1861 Retaining Ring Pliers 1 Note: Refer to Specifications, "Water Pump" for specifications that are required during assembly. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 2/4 Illustration 1 g00813948 1. Install seal (14), if the seal was removed during the disassembly procedures. 2. The following components are installed on shaft (9) : Washer (13) Bearing (12) Spacer (11) Bearing (10) Note: Check two bearings (10) and (12) for correct rotation. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 3/4 Illustration 2 g00610140 3. Use a press and Tool (A) to install shaft assembly (5) into the water pump housing. 4. Use a press and Tool (A) to install impeller (8) onto shaft assembly (5) . Illustration 3 g00610127 5. Use Tool (B) to install retaining ring (4) into the water pump housing. 6. Use a press and Tool (A) to install flange (3) onto shaft assembly (5) . Illustration 4 g00610108 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 4/4 7. Install water pump pulley (2) onto the flange. 8. Install four bolts (1) in order to secure water pump pulley (2) to the flange. End By: Install the water pump. Refer to Disassembly and Assembly, "Water Pump - Install". Copyright 1993 - 2020 Caterpillar Inc. Mon Jun 22 22:04:26 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 1/2 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312B L EXCAVATOR 8JR Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWERED BY 3064 ENGINE Disassembly and Assembly 3064 and 3066 Engines for Caterpillar Built Machines Media Number -SENR5553-10 Publication Date -01/05/2012 Date Updated -15/05/2012 i01149732 Water Pump - Install SMCS - 1361-012 Installation Procedure NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. Illustration 1 g00609950 1. Replace O-ring (4) (not shown) with a new part. Apply glycerine to the O-ring before the installation of the water pump (3) and water pump pulley (2) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 2/2 2. Install the water pump (3) and water pump pulley (2) as a unit onto the engine. Note: When the water pump is installed, ensure that the grease fitting is up. Also, ensure that the weep hole is down. 3. Install bolts (1) in order to secure water pump (3) to the cylinder block. 4. Fill the cooling system to the correct level. Refer to the appropriate Operation and Maintenance Manual for the correct fluid and the correct filling procedure. End By: Install V-belts. Refer to Disassembly and Assembly, "V-Belts - Remove and Install". Copyright 1993 - 2020 Caterpillar Inc. Mon Jun 22 22:05:25 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 1/4 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312B L EXCAVATOR 8JR Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWERED BY 3064 ENGINE Disassembly and Assembly 3064 and 3066 Engines for Caterpillar Built Machines Media Number -SENR5553-10 Publication Date -01/05/2012 Date Updated -15/05/2012 i01148678 Water Temperature Regulator - Remove and Install SMCS - 1355-010 Removal Procedure At operating temperature, the engine coolant is hot and under pressure. Steam can cause personal injury. Check the coolant level only after the engine has been stopped and the filler cap is cool enough to touch with the bare hand. Remove the filler cap slowly to relieve pressure. Cooling system conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury. NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. NOTICE https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 2/4 Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. 1. Drain the coolant level below the water temperature regulator. Illustration 1 g00609693 2. Loosen hose clamp (1) and disconnect hose (2) from cover (4) of the water temperature regulator. 3. Remove two bolts (3) and the washers from cover (4) of the water temperature regulator. 4. Separate cover (4) from elbow (5) . 5. Remove bolts (6). Separate elbow (5) from the water outlet manifold. 6. Remove water temperature regulator (8) (not shown) from cover (4) . 7. Remove gasket (7) (not shown) and gasket (9) (not shown) from the mounting surfaces of cover (4) and elbow (5) . 8. Use the following procedure in order to test the water temperature regulator: a. Put the water temperature regulator in a tub of water. Heat the water in order to test the water temperature regulator for thermostatic action. Note: Stir the water in the tub in order to maintain even temperature during the test. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 3/4 b. When the valve of the water temperature regulator lifts more than 10 mm (0.4 inch), measure the water temperature. Note: The opening temperature for the water temperature regulator is 71 2 C (160 3.6 F). c. If the valve fails to operate properly, replace the water temperature regulator. Installation Procedure NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. 1. Clean all of the mounting surfaces for the gaskets and remove all gasket material. NOTICE If the water temperature regulator is installed incorrectly, it will cause the engine to overheat. Illustration 2 g00609693 2. Install water temperature regulator (8) (not shown) into elbow (5) . Note: When the water temperature regulator is installed, ensure that the hole for the air vent is up. 3. Install gasket (7) (not shown) and gasket (9) (not shown). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 4/4 Note: Check the condition of the gaskets. If the gaskets are worn or damaged, use 8T-9013 Silicone Sealant for replacement. 4. Install the bolts (6) in order to secure elbow (5) to the water outlet manifold. 5. Install cover (4) for the water regulator housing. 6. Install the washers and two bolts (3) in order to secure cover (4) of the water regulator housing. 7. Reconnect hose (2) and tighten hose clamp (1) onto cover (4) of the water regulator housing. 8. Fill the cooling system to the correct level. Refer to the Operation and Maintenance Manual for the correct fluid and the correct filling procedure. Copyright 1993 - 2020 Caterpillar Inc. Mon Jun 22 22:06:24 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 1/4 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312B L EXCAVATOR 8JR Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWERED BY 3064 ENGINE Disassembly and Assembly 3064 and 3066 Engines for Caterpillar Built Machines Media Number -SENR5553-10 Publication Date -01/05/2012 Date Updated -15/05/2012 i01567208 Flywheel - Remove SMCS - 1156-011 Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 138-7575 Link Bracket 1 B Forcing screws M16 X 2 2 NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 2/4 Illustration 1 g00605492 1. Remove twelve bolts (1) and washers from the adapter (2) . 2. Remove the adapter (2) from the flywheel housing. Illustration 2 g00605497 3. Remove four socket head bolts (3) from the inner ring (4) . 4. Remove the inner ring (4) from the flywheel. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 3/4 Illustration 3 g00605501 5. Remove six bolts (5) that secure flywheel (6) to the crankshaft. Check all bolts for stripped threads. Replace the bolts, if necessary. Illustration 4 g00605504 6. Install Tool (A), a strap, and a suitable lifting device onto the flywheel (6). 7. Use Tool (B) in order to remove the flywheel and ring gear out of the housing. The weight of the flywheel is 50 kg (110 lb). 8. Perform the following procedure in order to remove the flywheel ring gear. Illustration 5 g00613038 a. Place the flywheel and ring gear assembly on a suitable support. Note: Check the flywheel ring gear for the following conditions:cracks, damaged dowel holes, worn ring gear and damaged ring gear. Note: Identify the orientation of the old ring gear on the flywheel for proper positioning, when the new ring gear is installed. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 4/4 Always wear protective gloves when handling parts that have been heated. b. Heat ring gear (7) uniformly. c. Remove the ring gear (7) by tapping the ring gear all the way around the flywheel (6) . d. Reposition the flywheel in order to remove the ring gear. Copyright 1993 - 2020 Caterpillar Inc. Mon Jun 22 22:07:24 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 1/3 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312B L EXCAVATOR 8JR Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWERED BY 3064 ENGINE Disassembly and Assembly 3064 and 3066 Engines for Caterpillar Built Machines Media Number -SENR5553-10 Publication Date -01/05/2012 Date Updated -15/05/2012 i01567260 Flywheel - Install SMCS - 1156-012 Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 138-7575 Link Bracket 1 NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. Always wear protective gloves when handling parts that have been heated. 1. Perform the following procedure, if the ring gear was removed from the flywheel: a. Heat the ring gear to 150 C (302 F) in an oven. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

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312B & 312B L TRACK-TYPE EXCAVATORS 8JR00001-UP (MACHINE) POWE... 2/3 b. Press the ring gear onto the flywheel. Note: Prior to the installation of the flywheel, refer to Specifications, "Flywheel" for information on checking the flywheel assembly for flatness. Illustration 1 g00605504 2. Install Tool (A), a strap, and a suitable lifting device onto flywheel (6) . 3. Install flywheel (6). The weight of the flywheel is 50 kg (110 lb). Illustration 2 g00605501 4. Install six bolts (5) in order to secure flywheel (6) onto the crankshaft. Tighten the bolts to a torque of 83 5 N m (61 4 lb ft). 5. Remove Tool (A) from the flywheel. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/6/22

https://www.ebooklibonline.com Hello dear friend! Thank you very much for reading. Enter the link into your browser. The full manual is available for immediate download. https://www.ebooklibonline.com