C175-16 Marine Engine Caterpillar

Removal Procedure

Start By:

1. Install the cylinder head.

2. Install the piston cooling jet.

Show/hide table

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, PERJ1017, "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.

1. Drain the engine oil into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Engine Oil and Filter - Change".
   Show/hide table

   Illustration 1	g03405954

   Note: Inspect the connecting rod and connecting rod cap for the proper identification mark. The connecting rod and the connecting rod cap should have an etched number on the side. The number should match the cylinder number. Mark the connecting rod and the connecting rod cap, if necessary. Careful handling is required for fractured connecting rods. The connecting rod and the rod cap should be placed on the sides to prevent damage. When possible, the connecting rod and the rod cap should be bolted together to prevent damage.

2. Use Tooling (A) to rotate the flywheel to access the connecting rod cap that will be removed.

3. Remove bolts (1), spacers (2), and connecting rod cap (3). Position the crankshaft so that the piston is at the bottom dead center. Inspect the connecting rod bearing for wear or for damage.
   Show/hide table

   Illustration 2	g01240845

4. Install Tooling (B) onto the connecting rod.
   Show/hide table

   Illustration 3	g01240763

5. Install Tooling (C). Hold the bolt of Tooling (C) and turn the nut. Turn the nut until the nut is tight.

6. Rotate the engine to position the cylinder pack to the proper height and install Tooling (D).
   Show/hide table

   Illustration 4	g01997933

7. Install Tooling (D). Remove Tooling (C).

   Note: Do not remove the cylinder pack with Tooling (C).

   Show/hide table

   Illustration 5	g01765495

8. Install Tooling (E) onto the piston liner. Rotate the engine to position the piston to the top. Attach Tooling (E) to the piston. Attach a suitable lifting device onto Tooling (E). The weight of the piston, the liner, and the connecting rod is approximately 50 kg (110 lb). Remove Tooling (D).
   Show/hide table

   Illustration 6	g03405978

9. Remove cylinder pack (4) from the cylinder block.

Installation Procedure

Note: Ensure that the top O-ring seal for the liner is at least 20 °C (68 °F) before installation of liners into the cylinder block. Assembly with a cold seal may result in damage to the O-ring seal or to the installation tool.

Show/hide table

Illustration 7	g06119953

1. Rotate the engine to position the piston toward top dead center for easy access. Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston".

2. Attach a suitable lifting device onto Tooling (E). The weight of the piston, the liner, and the connecting rod is approximately 50 kg (110 lb). Install Tooling (B) onto the connecting rod. Coat the liner bore of the cylinder block and the O-ring seals on the outside of the cylinder liner with Tooling (H). Install cylinder pack (4) into the cylinder block.

   Note: Inspect the connecting rod bearing for wear or for damage. If necessary, replace the connecting rod bearing. Refer to Disassembly and Assembly, "Connecting Rod Bearings - Remove and Install" for the proper procedure. Position the connecting rod so that the chamfer is toward the crankshaft. Install the piston, the liner, and the connecting rod as a unit.

   Show/hide table

   Illustration 8	g01765495

3. Remove Tooling (E).
   Show/hide table

   Illustration 9	g01945551

4. Install Tooling (F). Use Tooling (F) to seat the liner into the cylinder block. Fully seat the cuff.
   Show/hide table

   Illustration 10	g01240845

5. Remove Tooling (B) from the connecting rod.
   Show/hide table

   Illustration 11	g03405954

   Note: Match the tabs on the ODD and EVEN connecting rod caps with the connecting rods.

6. Install connecting rod cap (3). Apply Tooling (G) under the connecting rod bolts (1), the rings, and to the threads of the bolts. Install connecting rod bolts (1) and spacers (2).

7. Use Tooling (A) to rotate the flywheel to access the connecting rod cap (3) that will be installed.
   Show/hide table

   Illustration 12	g03406088
   The arrow represents the front of the engine block Bolt numbering for 316-0062 Connecting Rod, 316-0063 Connecting Rod, 434-0480 Connecting Rod, and 434-0481 Connecting Rod. Bolt (1) is always identified as the center bolt on the bearing tab side of the connecting rod. (A) Bearing tab side (X) Odd numbered connecting rod (Y) Even numbered connecting rod

   Note: Identify the connecting rod part number to determine which of the following torque procedures to follow.

8. Use the following procedure to tighten the connecting rod bolts for Type 1 connecting rods:
   Show/hide table

   Table 3

   Assembly Specification for Type 1 Connecting Rods with 290-2541 Bolts
   Item	Qty	Part	Specification Description
   1	6	290-2541 Bolts	Use the following procedure to tighten the bolts of the connecting rod: Note : Apply Bel-Ray Molylube 67700 to the threads and middle rings of bolt (2) and the contact surface under the bolt head. Refer to the following link for ordering purpose. www.belray.com 1. Install the spacers (2) and the bolts (1). Hand tighten the bolts. Note : Bolt 1 is identified as the middle bolt on the tab side of the bearing on the connecting rod. Tighten this bolt first to seat the bearing into the bore. 2. Tighten bolt 1 and bolt 2 to 105 ± 5 N·m (77 ± 4 lb ft). 3. Tighten bolt 3 and bolt 4 to 105 ± 5 N·m (77 ± 4 lb ft). 4. Tighten bolt 5 and bolt 6 to 105 ± 5 N·m (77 ± 4 lb ft). 5. Again tighten bolt 1 and bolt 2 to 105 ± 5 N·m (77 ± 4 lb ft). 6. Again tighten bolt 3 and bolt 4 to 105 ± 5 N·m (77 ± 4 lb ft). 7. Again tighten bolt 5 and bolt 6 to 105 ± 5 N·m (77 ± 4 lb ft). 8. Turn bolt 3 and bolt 4 to 90 ± 5 degrees. 9. Turn bolt 5 and bolt 6 to 90 ± 5 degrees. 10. Turn bolt 1 and bolt 2 to 90 ± 5 degrees.
   2	2	269-0588 Spacers

   Show/hide table

   Table 4

   Assembly Specification for Type 1 Connecting Rods with 428-7386 Bolt As
   Item	Qty	Part	Specification Description
   1	6	428-7386 Bolt As	Use the following procedure to tighten the bolts of the connecting rod: Note: Lubricate each bolt with Bel-Ray Molylube 67700 by fully coating the elastomer rings, threads, and the contact surface under the bolt head. Refer to the following link for ordering purpose. www.belray.com 1. Install all the bolts into the spacers by pushing and rotating the bolt simultaneously. Note: Rotating the bolt while pushing will avoid damage to the bolts. 2. Install the bolts into the connecting rod cap by pushing and rotating the bolt simultaneously. 3. Engage the threads by pushing and slowly rotating the bolt. Do not tap the bolt. All six bolts should have the threads engaged before the joint is drawn together on either side. The order of engaging the threads is bolts 1-2-3-4-5-6. Engaging bolt 1 and 2 first helps center the cap to the connecting rod. Once bolts 1 and 2 threads have engaged, install the remaining bolts in order. 4. Tighten bolt 1 and bolt 2 to 105 ± 5 N·m (77 ± 4 lb ft). 5. Tighten bolt 3 and bolt 4 to 105 ± 5 N·m (77 ± 4 lb ft). 6. Tighten bolt 5 and bolt 6 to 105 ± 5 N·m (77 ± 4 lb ft). 7. Again tighten bolt 1 and bolt 2 to 105 ± 5 N·m (77 ± 4 lb ft). 8. Again tighten bolt 3 and bolt 4 to 105 ± 5 N·m (77 ± 4 lb ft). 9. Again tighten bolt 5 and bolt 6 to 105 ± 5 N·m (77 ± 4 lb ft). 10. Turn bolt 3 and bolt 4 an extra 90 ± 5 degrees. 11. Turn bolt 5 and bolt 6 an extra 90 ± 5 degrees. 12. Turn bolt 1 and bolt 2 an extra 90 ± 5 degrees.
   2	2	269-0588 Spacer

   Show/hide table

   Illustration 13	g03406077
   The arrow represents the front of the engine block Bolt numbering for 434-0486 Connecting Rod Gp, 434-0487 Connecting Rod Gp, 376-4939 Connecting Rod, 376-4938 Connecting Rod, 417-7902 Connecting Rod, and 417-7903 Connecting Rod. Bolt (1) is always identified as the center bolt on the bearing tab side of the connecting rod. (A) Bearing tab side (X) Odd numbered connecting rod (Y) Even numbered connecting rod

9. Use the following procedure to tighten the connecting rod bolts for Type 2 connecting rods:
   Show/hide table

   Table 5

   Assembly Specifications for Type 2 Connecting Rods with 290-2541 Bolts
   Item	Qty	Part	Specification Description
   1	6	290-2541 Bolt	Use the following procedure to tighten the bolts of the connecting rod: Note: Apply Bel-Ray Molylube 67700 to the threads and middle rings of bolt and the contact surface under the bolt head. Refer to the following link for ordering purpose. www.belray.com 1. Install bolts (1) and spacers (2). Hand tighten the bolts. Bolt 1 is identified as the middle bolt on the tab side of the bearing on the connecting rod. Tighten this bolt first to seat the bearing into the bore. 2. Tighten bolt 1 and bolt 2 to 85 ± 5 N·m (63 ± 4 lb ft). 3. Tighten bolt 3 and bolt 4 to 85 ± 5 N·m (63 ± 4 lb ft). 4. Tighten bolt 5 and bolt 6 to 85 ± 5 N·m (63 ± 4 lb ft). 5. Again tighten bolt 1 and bolt 2 to 85 ± 5 N·m (63 ± 4 lb ft). 6. Again tighten bolt 3 and bolt 4 to 85 ± 5 N·m (63 ± 4 lb ft). 7. Again tighten bolt 5 and bolt 6 to 85 ± 5 N·m (63 ± 4 lb ft). 8. Turn bolt 3 and bolt 4 for an extra 90 ± 5 degrees. 9. Turn bolt 5 and bolt 6 for an extra 90 ± 5 degrees. 10. Turn bolt 1 and bolt 2 for an extra 90 ± 5 degrees.
   2	2	366-5649 Spacer

   Show/hide table

   Table 6

   Assembly Specifications for Type 2 Connecting Rods with 428-7386 Bolt As
   Item	Qty	Part	Specification Description
   1	6	428-7386 Bolt As	Use the following procedure to tighten the bolts of the connecting rod: Note: Lubricate each bolt with Bel-Ray Molylube 67700 by fully coating the elastomer rings, threads, and the contact surface under the bolt head. Refer to the following link for ordering purpose. www.belray.com 1. Install all the bolts into the spacers by pushing and rotating the bolt simultaneously. Note: Rotating the bolt while pushing will avoid damage to the bolts. 2. Install the bolts into the connecting rod cap by pushing and rotating the bolt simultaneously. 3. Engage the threads by pushing and slowly rotating the bolt. Do not tap the bolt. All six bolts should have the threads engaged before the joint is drawn together on either side. The order of engaging the threads is bolts 1-2-3-4-5-6. Engaging bolt 1 and 2 first helps center the cap to the connecting rod. Once bolts 1 and 2 threads have engaged, install the remaining bolts in order. 4. Tighten bolt 1 and bolt 2 to 85 ± 5 N·m (63 ± 4 lb ft). 5. Tighten bolt 3 and bolt 4 to 85 ± 5 N·m (63 ± 4 lb ft). 6. Tighten bolt 5 and bolt 6 to 85 ± 5 N·m (63 ± 4 lb ft). 7. Again tighten bolt 1 and bolt 2 to 85 ± 5 N·m (63 ± 4 lb ft). 8. Again tighten bolt 3 and bolt 4 to 85 ± 5 N·m (63 ± 4 lb ft). 9. Again tighten bolt 5 and bolt 6 to 85 ± 5 N·m (63 ± 4 lb ft). 10. Turn bolt 3 and bolt 4 an extra 90 ± 5 degrees. 11. Turn bolt 5 and bolt 6 an extra 90 ± 5 degrees. 12. Turn bolt 1 and bolt 2 an extra 90 ± 5 degrees.
   2	2	366-5649 Spacers

10. Fill the engine with oil. Refer to Operation and Maintenance Manual, "Engine Oil and Filter - Change".

End By:

1. Install the piston cooling jet.

2. Install the cylinder head.

Disassembly Procedure

Start By:

1. Remove the pistons, liners, and connecting rods.

Show/hide table

Illustration 14	g01520323

1. Attach Tooling (A) and a suitable lifting device onto connecting rod (1). The weight of connecting rod (1) and the piston is approximately 23 kg (50 lb). Remove connecting rod (1) and the piston from liner (2).
   Show/hide table

   Illustration 15	g01229379

2. Remove O-ring seals (3) from liner (2).
   Show/hide table

   Illustration 16	g01229403

3. Use Tooling (B) to remove retaining ring (4). Remove wrist pin (5) and remove connecting rod (1) from piston (6).
   Show/hide table

   Illustration 17	g01229404

4. Use Tooling (C) and remove piston rings (7) from piston (6).

Assembly Procedure

Show/hide table

Illustration 18	g01229404

1. Use Tooling (E) for the ring grooves. Use Tooling (C) and install piston rings (7) onto piston (6). Install the top ring with the side that is marked UP 1 toward the top of the piston. Install the intermediate ring with the side that is marked UP 2 toward the top of the piston. The oil ring spring ends must be assembled 180 degrees from the ring end gap. After the rings have been installed, rotate the rings so that the end gaps are located 120 degrees from each other. Oil ring end gap must be in the pin bore plane.
   Show/hide table

   Illustration 19	g01229403

2. Coat connecting rod (1) and wrist pin (5) with clean engine oil. Install connecting rod (1) into piston (6). Install wrist pin (5) into piston (6) and connecting rod (1). Use Tooling (B) to install retaining ring (4). Position retaining ring (4) with the opening toward the bottom of the piston.
   Show/hide table

   Illustration 20	g01229379

3. Install O-ring seals (3) onto liner (2).
   Show/hide table

   Illustration 21	g01240871

4. Coat piston (6) and the piston rings with clean engine oil. Install Tooling (D) onto piston (6). Tighten Tooling (D) to compress the piston rings.
   Show/hide table

   Illustration 22	g01240872

5. Coat the inside liner (2) with clean engine oil. Attach Tooling (A) and a suitable lifting device onto the connecting rod. The weight of the connecting rod and the piston assembly is approximately 23 kg (50 lb). Install the connecting rod and the piston assembly into the bottom side of liner (2).
   Show/hide table

   Illustration 23	g01520432

6. Remove Tooling (D) from liner (2).

   Note: Do not permit the piston to go past the top dead center position. If the piston goes past the top dead center position, the piston rings will lock into the cuff ring bore.

End By:

1. Install the pistons, liners, and connecting rods.