Caterpillar Cat 637D WHEEL SCRAPER (Prefix 20W) Service Repair Manual Instant Download 2
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w 1/3(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i02273201 Cylinder Head - Remove SMCS - 1100-011 Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 138-7575 Link Bracket 2 Start By: A. Remove the rocker arm and shaft. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Remove". B. Remove the unit injectors. Refer to Disassembly and Assembly, "Unit Injector - Remove". C. Remove the alternator. Refer to Disassembly and Assembly, "Alternator - Remove and Install". D. Remove the valve mechanism cover base. Refer to Disassembly and Assembly, "Valve Mechanism Cover Base - Remove and Install". 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=/sisweb/sis... 2021/11/18
w 2/3(W) 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. Refer to Operation and Maintenance Manual, "Refill Capacities and Recommendations". https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 3/3(W) Illustration 1 g01063034 2. Remove accessory drive group (1) . 3. Disconnect tube assemblies (3) and (4) . 4. Remove tube assembly (2) . 5. Disconnect hose (5) . Illustration 2 g01142119 6. Disconnect hose assemblies (6) and (7) . 7. Disconnect the sensors. 8. Attach Tooling (A) and a suitable lifting device to cylinder head (9). The weight of cylinder head (9) is approximately 147 kg (325 lb). 9. Remove bolts (8). Remove cylinder head (9) and the gasket. Copyright 1993 - 2021 Caterpillar Inc. Thu Nov 18 21:06:33 UTC+0800 2021 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
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w 1/5(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i05919858 Cylinder Head - Install SMCS - 1100-012 Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 138-7575 Link Bracket 2 B 4C-5593 Anti-Seize Compound 1 NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. 1. Position a new gasket on the engine. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 2/5(W) Illustration 1 g01142119 2. Attach Tooling (A) and a suitable lifting device to cylinder head (9) . The weight of cylinder head (9) is approximately 147 kg (325 lb). Position the cylinder head onto the dowels in the engine block. 3. Apply Tooling (B) to the threads of bolts (8) . Install bolts (8) . Tighten the plugs (not shown) for the high-pressure oil gallery on each end of the cylinder head to the following torque 285 25 N m (210 18 lb ft). Note: Refer to Reuse and Salvage Guidelines, SEBF8301, "Inspection and Reuse of Critical Fasteners Used in All Engines" for reuse criteria of bolts (8) . Illustration 2 g01063104 4. Tighten bolts (8) according to the following procedure: a. Tighten Bolt (1) through Bolt (26) in a numerical sequence to a torque of 160 15 N m (118 11 lb ft). b. Loosen Bolt (1) through Bolt (26) until the washers are loose under the bolt heads. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 3/5(W) c. Tighten Bolt (1) through Bolt (26) again in a numerical sequence to a torque of 160 15 N m (118 11 lb ft). d. Place a mark on Bolt (1) through Bolt (26) . e. Rotate Bolt (1) through Bolt (26) in a numerical sequence. Rotate the bolts in the clockwise direction for 90 degrees (1/4 turn) from the mark on the bolts. f. Loosen Bolt (1) through Bolt (26) until the washers are loose under the bolt heads. g. Tighten Bolt (1) through Bolt (26) in a numerical sequence to a torque of 160 15 N m (118 11 lb ft). h. Place a mark on Bolt (1) through Bolt (26) . i. Rotate Bolt (1) through Bolt (26) in a numerical sequence. Rotate the bolts in the clockwise direction for 90 degrees (1/4 turn) from the mark on the bolts. j. Tighten Bolt (27) through Bolt (31) in a numerical sequence to a torque of 28 7 N m (21 5 lb ft). Tighten the plugs (not shown) for the high-pressure oil gallery on each end of the cylinder head to the following torque 285 25 N m (210 18 lb ft). 5. Connect the sensors. 6. Connect hose assemblies (6) and (7) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 4/5(W) Illustration 3 g01063034 7. Connect hose (5) . 8. Install tube assembly (2) . 9. Connect tube assemblies (3) and (4) . 10. Install accessory drive group (1) . 11. Fill the cooling system. Refer to Operation and Maintenance Manual, "Refill Capacities and Recommendations". End By: a. Install the valve mechanism cover base. Refer to Disassembly and Assembly, "Valve Mechanism Cover Base - Remove and Install". b. Install the alternator. Refer to Disassembly and Assembly, " Alternator - Remove and Install". c. Install the unit injectors. Refer to Disassembly and Assembly , "Unit Injector - Install". d. Install the rocker arm and shaft. Refer to Disassembly and Assembly , "Rocker Arm and Shaft - Install". Thu Nov 18 21:07:29 UTC+0800 2021 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 1/3(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i06809044 Lifter Group - Remove and Install SMCS - 1209-010 Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A FT-2730 Hook 1 Start By: a. Remove the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Remove". 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=/sisweb/sis... 2021/11/18
w 2/3(W) Illustration 1 g00953158 1. Use Tooling (A) to remove valve lifters (1). Place identification marks on the valve lifters for installation purposes. Installation Procedure Table 2 Required Tools Tool Part Number Part Description Qty A FT-2730 Hook 1 B 8T-2998 Lubricant 1 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 3/3(W) Illustration 2 g00953158 1. Apply Tooling (B) to valve lifters (1) prior to installation. Use Tooling (A) to install valve lifters (1) in the original location in the cylinder block. End By: a. Install the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Install". Copyright 1993 - 2021 Caterpillar Inc. Thu Nov 18 21:08:24 UTC+0800 2021 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 1/3(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i02274059 Camshaft - Remove SMCS - 1210-011 Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A FT-2730 Hook 12 Start By: a. Remove the rocker arm and the shaft. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Remove". b. Remove the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove". NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. 1. Use Tooling (A) to reposition the valve lifters out of the way of the camshaft. 2. Set the No. 1 piston to top center on the compression stroke. Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston". https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 2/3(W) Illustration 1 g01032348 3. Ensure that the timing marks on camshaft gear (1) and idler gear (2) are aligned. 4. Remove bolts (3) and thrust plate (4) from the cylinder block. Illustration 2 g01032349 NOTICE Do not damage the lobes or the bearings when the camshaft is removed or installed. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 3/3(W) 5. Remove camshaft (5) from the cylinder block. Copyright 1993 - 2021 Caterpillar Inc. Thu Nov 18 21:09:20 UTC+0800 2021 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 1/4(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i05278252 Camshaft - Install SMCS - 1210-012 Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty A FT-2730 Hook 12 B 8T-2998 Lubricant - 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=/sisweb/sis... 2021/11/18
w 2/4(W) Illustration 1 g03356215 NOTICE Do not damage the lobes or the bearings when the camshaft is removed or installed. Note: During the installation of the camshaft, rotate the camshaft in both directions in order to prevent binding in the camshaft bearing bores. 1. Lubricate the camshaft lobes and the valve lifter bore with a 50/50 mixture of Tooling (B). Apply clean engine oil on the camshaft bearing journals. Carefully install camshaft (10) in the cylinder block. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 3/4(W) Illustration 2 g03356207 (5) Gear for the high-pressure fuel pump (6) Camshaft gear (7) Idler gear (8) Crankshaft gear (9) Timing marks NOTICE When installing the camshaft, make sure the number one cylinder is at top center of the compression stroke with the timing bolt installed in the flywheel. The camshaft timing is very important. The timing mark on the camshaft drive gear must line up with the timing mark on the idler gear. Refer to the Specifications Manual for more information. 2. Correct fuel injection timing and correct valve mechanism operation is determined by properly timing crankshaft gear (8) and camshaft gear (6) to idler gear (7). Also, high-pressure fuel pump gear (5) must be timed to camshaft gear (6). During installation of the front gear, timing marks (9) on idler gear (7) must be in alignment with the timing marks on crankshaft gear (8) and the timing marks on camshaft gear (6). The "0" mark on camshaft gear (6) must align with the timing mark on idler gear (7). The "V" mark on camshaft gear (6) must align with the "V" mark on fuel pump gear (5). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 4/4(W) Illustration 3 g01032348 3. Install thrust plate (4) and bolts (3). 4. The maximum permissible end play for a worn camshaft is 0.46 mm (0.018 inch). The maximum permissible end play for a new camshaft is 0.13 0.08 mm (0.005 0.003 inch). 5. Use Tooling (A) to position the valve lifters in the cylinder block. 6. Calibrate the speed/timing sensor. Refer to Troubleshooting, "Engine Speed/Timing Sensor - Calibrate". End By: a. Install the front cover. Refer to Disassembly and Assembly, "Front Cover - Install". b. Install the rocker arm and the shaft. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Install". Copyright 1993 - 2021 Caterpillar Inc. Thu Nov 18 21:10:16 UTC+0800 2021 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 1/2(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i02408922 Camshaft Gear - Remove and Install SMCS - 1210-010-GE Removal Procedure Start By: a. Remove the camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove". 1. Wrap the camshaft with a protective covering in order to prevent damage to the camshaft. Illustration 1 g01142107 NOTICE https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 2/2(W) Do not allow the camshaft to fall to the floor when pressing it from the drive gear. Also make sure that the camshaft lobes do not catch on the press plates. 2. Use a suitable press to remove the camshaft from camshaft gear (1). Installation Procedure Note: The temperature of the camshaft gear must not exceed 177 C (350 F) during installation. 1. Raise the temperature of the camshaft gear up to a temperature of 177 C (350 F). 2. Align the key in the camshaft with the groove (keyway) in the camshaft gear. 3. Install the camshaft gear on the end of the camshaft. End By: a. Install the camshaft. Refer to Disassembly and Assembly, "Camshaft - Install". Copyright 1993 - 2021 Caterpillar Inc. Thu Nov 18 21:11:12 UTC+0800 2021 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 1/2(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i02545687 Camshaft Bearings - Remove SMCS - 1211-011 Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 8S-2241 Camshaft Bearing Tool Group 1 Start By: a. Remove the camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove". b. Remove the flywheel housing. Refer to Disassembly and Assembly, "Flywheel Housing- Remove and Install". Note: Note the oil hole orientation in each camshaft bearing prior to removal for assembly purposes. 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=/sisweb/sis... 2021/11/18
w 2/2(W) 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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates. Illustration 1 g00633159 1. Use Tooling (A) to remove the camshaft bearings from the cylinder block. Copyright 1993 - 2021 Caterpillar Inc. Thu Nov 18 21:12:08 UTC+0800 2021 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 1/4(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i02545718 Camshaft Bearings - Install SMCS - 1211-012 Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 8S-2241 Camshaft Bearing Tool Group 1 NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. NOTICE Camshaft bearings must be installed into their correct position. Failure to do so will result in engine damage. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 2/4(W) Illustration 1 g00884735 1. Refer to Illustration 1 for the locations of the bearings. (1) Installation Dimension (A) for bearing (1) ... 816.5 0.8 mm (32.15 0.03 inch) (2) Installation Dimension (B) for bearing (2) ... 536.5 0.8 mm (21.12 0.03 inch) (3) Installation Dimension (C) for bearing (3) ... 294.5 0.8 mm (11.59 0.03 inch) (4) Installation Dimension (D) for bearing (4) ... 0.50 0.25 mm (0.020 0.010 inch) https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 3/4(W) Illustration 2 g00884754 2. Use Tooling (A) to install bearings (1), (2), and (3) that are behind the front bearing. Install the bearings to the proper depths. Refer to Illustration 1 and refer to Step 1. Orient the bearings so that oil holes (5) are located at the tops of the bores and joints (6) are positioned, as shown. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 4/4(W) Illustration 3 g00884758 3. Install front bearing (4). Carefully locate oil hole (8) at the oil gallery. Orient joint (7), as shown. End By: a. Install the flywheel housing. Refer to Disassembly and Assembly, "Flywheel Housing - Remove and Install". b. Install the camshaft. Refer to Disassembly and Assembly, "Camshaft - Install". Copyright 1993 - 2021 Caterpillar Inc. Thu Nov 18 21:13:03 UTC+0800 2021 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
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w 1/4(W) Shutdown SIS Previous Screen Product: WHEEL SCRAPER Model: 637D WHEEL SCRAPER 20W Configuration: 637D SCRAPERS 20W00001-00494 (MACHINE) POWERED BY 3306 ENGINE Disassembly and Assembly C9 Engine For Caterpillar Built Machines Media Number -SENR9502-16 Publication Date -01/03/2014 Date Updated -06/03/2014 i02398558 Engine Oil Pan - Remove and Install SMCS - 1302-010 Removal Procedure Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. 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. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis... 2021/11/18
w 2/4(W) Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" 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 engine oil into a suitable container for storage or disposal. Illustration 1 g00953188 2. Remove bolts (2) . Remove engine oil pan (1) and the gasket. Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 8C-8422 Sealant 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=/sisweb/sis... 2021/11/18
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