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Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines Media
Accessory Drive - Assemble
SMCS - 1207-016
Assembly Procedure
Table 1 Required Tools
1P-1858 Retaining Ring Pliers 1
Illustration 1
i02076489
2. Raise the temperature of bearings (3)
3. Place bearings (3) in the original location on gear and shaft (2)
4. Use Tooling (B) in order to install retaining ring (4) into accessory drive housing (5) .
5. Install gear and shaft (2) with bearings (3) into accessory drive housing (5) .
6. Install bolts (1) .
End By: Install the accessory drive. Refer to Disassembly and Assembly, "Accessory Drive - Install".
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines Media Number -RENR1223-15
Accessory Drive - Disassemble
SMCS - 1207-015
Disassembly Procedure Table 1
5F-7345 Screw 1 B 1P-1858 Retaining Ring Pliers 1
Start By:
A. Remove the accessory drive. Refer to Disassembly and Assembly, "Accessory Drive - Remove".
Illustration 1 g01062840
1. Remove bolts (1) .
2. Remove gear and shaft (2) with bearings (3) from accessory drive housing (5) .
Note: One end of the gear shaft is longer than the opposite end. Prior to assembly, ensure that the gear shaft is in the correct position.
3. Use Tooling (A) in order to remove bearings (3) from gear and shaft (2)
4. Use Tooling (B) in order to remove retaining ring (4) from accessory drive housing (5)
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR STD, XR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines
Media
Accessory Drive - Install
SMCS - 1207-012
Installation Procedure
Illustration 1 g01021789
Typical example
1. Install accessory drive (2) .
2. Install bolts (1) and the washers. Tighten the bolts to a torque of 100 ± 20 N·m (74 ± 15 lb ft).
End By:
a. Install the front cover. Refer to Disassembly and Assembly, "Front Cover - Install".
b. Install the belt tensioner. Refer to Disassembly and Assembly, "Belt Tensioner - Remove and Install"
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR STD, XR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines
Accessory Drive - Remove
SMCS - 1207-011
Removal Procedure
Start By:
A. Remove the belt tensioner. Refer to Disassembly and Assembly, "Belt Tensioner - Remove and Install".
B. Remove the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove".
Illustration 1 g01021789
Typical example
1. Remove bolts (1) and the washers.
2. Remove accessory drive (2) .
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines
Air Conditioner Support Bracket - Remove and Install
SMCS - 1802-010
Removal Procedure
Illustration 1
g01064408
1. Remove bolts (1) with the nuts and the washers.
2. Remove bolts (2) and the washers.
3. Remove air conditioner compressor support bracket (3) .
Installation Procedure
NOTICE
The air conditioner support bracket provides additional support for the mounting pad on the engine front housing. However, due to the increased stiffness of this bracket, extra care is needed when installing the air conditioner compressor support bracket on the engine. Following the correct installation procedure will avoid applying assembly stresses to the engine front housing mounting pad which may lead to a crack.
i02077815
Illustration 2
1. Install air conditioner support bracket (3) with the following procedure.
a. Install bolts (1) with the nuts and the washers. Finger tighten the bolts.
b. Install bolts (2) and the washers. Finger tighten the bolts.
NOTICE
Ensure that there is no gap between the air conditioner compressor support bracket and the engine front housing. Ensure that there is no gap between the air conditioner support bracket and the cylinder head. Reposition the air conditioner compressor support bracket in order to eliminate the gap.
c. Lightly tighten bolts (1) and bolts (2) .
d. Ensure that air conditioner support bracket (3) remains tight against the engine front housing and the cylinder head.
e. Tighten the bolts to a torque of 47 ± 9 N·m (35 ± 7 lb ft).
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR STD, XR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines
Media
Alternator - Remove and Install
SMCS - 1405-010
Removal Procedure
Personal injury can result from failure to disconnect the battery.
First, disconnect the negative battery cable. Then, disconnect the positive battery cable.
A positive power lead can cause sparks if the battery is not disconnected. Sparks can possibly result in battery explosion or fire.
1. Remove the drive belt from the drive pulley on the alternator.
2. Place an index mark on all of the harness assemblies that are connected to the alternator. Disconnect the harness assemblies from the alternator.
Illustration 1 g01028740
3. Remove bolt (1) .
4. Remove nut (2) and the bolt from mounting bracket (3) .
5. Remove alternator (4) .
Installation Procedure
Illustration 2 g01028740
1. Position alternator (4) on mounting bracket (3). Install the bolt and nut (2). Hand tighten nut (2) .
2. Install bolt (1). Do not tighten.
3. Install the drive belt on the drive pulley of the alternator.
4. Adjust the tension on the drive belt. Refer to the Operation and Maintenance Manual for the correct adjusting procedure.
5. Tighten bolt (1) .
6. Tighten nut (2) .
7. Connect all harness assemblies to the alternator. Use the index marks to correctly connect the harness assemblies.
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines
Bearing Clearance - Check
SMCS - 1203-535; 1219-535
Measurement Procedure Table 1
Required Tools Tool
Gauge (Green)
to
Gauge (Red)
to 0.152 mm (0.002 to 0.006 inch)
Plastic Gauge (Blue) 0.102 to 0.229 mm (0.004 to 0.009 inch)
Plastic Gauge (Yellow)
198-9145
i05977048
0.230 to 0.510 mm (0.009 to 0.020 inch)
Note: Plastic gauge may not be necessary when the engine is in the chassis.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Note: Cat does not recommend the checking of the actual bearing clearances particularly on small engines. This is because of the possibility of obtaining inaccurate results and the possibility of damaging the bearing or the journal surfaces. Each Cat engine bearing is quality checked for specific wall thickness.
Note: The measurements should be within specifications and the correct bearings should be used. If the crankshaft journals and the bores for the block and the rods were measured during disassembly, no further checks are necessary. However, if the technician still wants to measure the bearing clearances, Tooling (A) is an acceptable method. Tooling (A) is less accurate on journals with small diameters if clearances are less than 0.10 mm (0.004 inch).
NOTICE
Lead wire, shim stock or a dial bore gauge can damage the bearing surfaces.
The technician must be very careful to use Tooling (A) correctly. The following points must be remembered:
• Ensure that the backs of the bearings and the bores are clean and dry.
• Ensure that the bearing locking tabs are properly seated in the tab grooves.
• The crankshaft must be free of oil at the contact points of Tooling (A).
1. Put a piece of Tooling (A) on the crown of the bearing that is in the cap.
Note: Do not allow Tooling (A) to extend over the edge of the bearing.
2. Use the correct torque-turn specifications in order to install the bearing cap. Do not use an impact wrench. Be careful not to dislodge the bearing when the cap is installed.
Note: Do not turn the crankshaft when Tooling (A) is installed.
3. Carefully remove the cap, but do not remove Tooling (A). Measure the width of Tooling (A) while Tooling (A) is in the bearing cap or on the crankshaft journal. Refer to Illustration 1.
Illustration 1 g01152855
Typical Example
4. Remove all of Tooling (A) before you install the bearing cap.
Note: When Tooling (A) is used, the readings can sometimes be unclear. For example, all parts of Tooling (A) are not the same width. Measure the major width in order to ensure that the parts are within the specification range. Refer to Specifications Manual, "Connecting Rod Bearing Journal" and Specifications Manual, "Main Bearing Journal" for the correct clearances.
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines
Media
i01247345
Belt Tensioner - Remove and Install
SMCS - 1358-010
Removal Procedure
Illustration 1 g00519255
1. Use a breaker bar to release the tension on belt tightener (1). Remove the drive belt.
Illustration 2 g00519256
2. Remove bolt (4) and the washer.
3. Remove belt tightener (1) .
4. Remove three bolts (2) and the washers.
5. Remove support (3) .
Installation Procedure
1. Inspect the condition of the belt tightener and the drive belt. Replace the tightener and the belt, if necessary.
Illustration 3 g00519256
2. Install support (3) on the front housing with three bolts (2) and the washers. Tighten the bolts to a torque of 55 ± 10 N·m (41 ± 7 lb ft).
3. Install belt tightener (1) with bolt (4) and the washer. Tighten the bolt to a torque of 55 ± 10 N·m (41 ± 7 lb ft).
4. Install the drive belt. Use a breaker bar to place the original amount of tension on the belt.
Illustration 4 g00519259
5. If the alternator is equipped with an adjustable support strap, adjust the position of the alternator until the indicator edge (5) is aligned with the green area of the indicator decal.
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines
i02077128
Camshaft - Install
SMCS - 1210-012
Installation Procedure Table 1 Required Tools Tool Part
A 131-1525 Camshaft Pilot 1
Illustration 1
2
1. Install Tooling (A) .
Note: Ensure that camshaft (2) and Tooling (A) are clean. Apply clean engine oil to the lobes and journals of camshaft (2) and Tooling (A) .
Note: During installation of camshaft (2), rotate the camshaft in both directions in order to prevent binding in the camshaft bearing bores.
2. Carefully install camshaft (2) in the engine.
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.
3. Ensure that the timing marks (3) on the idler gear are aligned with the timing marks on the crankshaft gear and the camshaft drive gear.
4. Install thrust pin (1). Tighten thrust pin (1) to a torque of 28 ± 7 N·m (20 ± 5 lb ft). Remove the wires that were used to hold the valve lifters.
End By:
a. Install the camshaft position sensor. Refer to Disassembly and Assembly, "Camshaft Position SensorRemove and Install".
b. Install the front cover. Refer to Disassembly and Assembly, "Front Cover - Install".
Illustration
c. Install the rocker shaft and the pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Install".
1993 - 2024 Caterpillar Inc.
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines
Camshaft - Remove
SMCS - 1210-011
Removal Procedure
Table 1
Required Tools
Tool
A 131-1525 Camshaft Pilot 1
Start By:
A. Remove the rocker shaft and the pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Remove".
B. Remove the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove".
C. Remove the camshaft position sensor. Refer to Disassembly and Assembly, "Camshaft Position SensorRemove and Install".
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.
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. Turn the crankshaft to top center compression stroke for the No. 1 piston. Install the timing bolt in the flywheel. Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston".
2. Ensure that the timing marks on the following gears are aligned: the camshaft drive gear, the idler gear and the crankshaft gear.
1
Note: It is not necessary to remove the cylinder head for removal of the camshaft.
3. Wire the valve lifters away from the camshaft. See Illustration 1.
Illustration 2 g00813405
4. Remove thrust pin (1) .
5. Install Tooling (A) into camshaft (2) .
Note: Lubricate Tooling (A) for easier removal of the camshaft. Lubrication also prevents damaging the camshaft lobes and the camshaft bearings.
6. Carefully remove camshaft (2) from the engine.
Illustration
g00529917
Product: TRACK-TYPE TRACTOR
Model: D7R II TRACK-TYPE TRACTOR AGN
Configuration: D7R Series II TRACK-TYPE TRACTOR
Disassembly and Assembly
3176C and 3196 Engines for Caterpillar Built Machines Media
Camshaft Bearings - Remove and Install
Removal Procedure
Start By:
A. Remove the lifter assembly. Refer to Disassembly and Assembly, "Lifter Group - Remove and Install".
B. Remove the camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove".
Note: All of the tools that are listed above are used with the 8S-2241 Camshaft Bearing Tool Group.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
NOTICE
This is the sample of the manual click on the download link for complete manual
DOWNLOAD LINK
For some reason if link does not work download this pdf and then click