1999/12/20 Caterpillar

Engines: for Caterpillar Built Machines

3196 (S/N: 6AR1-UP)

3176C (S/N: 7ZR1-UP; 5DZ1-UP)

Service Manual Module, SENR5182-00, "Specifications", Page 11, "3176C Engine". This module is found in Service Manual, SENR5180.Service Manual Module, RENR1217-03, "Specifications", Page 13, "3176C and 3196 Engines For Caterpillar Built Machines". This module is found in the following service manuals:

• Service Manual, RENR1685, "Lexion 480, 485 Combines".

• Service Manual, RENR1900, "35B L Excavators"

• Service Manual, RENR1960, "365B L Excavators"

• Service Manual, RENR1980, "345B L Excavators"

• Service Manual, SENR1730, "Challenger 65E, 75E, 85E, 95E Ag Tractors"

• Service Manual, SENR1925, "345B L Excavators"

• Service Manual, SENR5530, "Vehicular & Truck Engine Specifications, Book IV"

• Service Manual, SENR9430, "Challenger 65D, 75D, 85D Ag Tractors"

In the "Cylinder Head" section, the procedure for tightening the cylinder head bolts has been changed. Refer to the following procedure in order to tighten the cylinder head bolts.

Illustration 1	g00517501

Note: There are currently two types of cylinder head bolts that are being used. The first type is a full shank design that is shown in Illustration 2. The second type is a reduced shank design that is shown in Illustration 3.

Note: Lubricate the bolt threads, the underside of the bolt heads, and the washers with 6V-4876 Lubricant prior to assembly.

Illustration 2	g00661561
Cylinder head bolt with full shank design

(A) This is a reference dimension for the diameter of the shank of the cylinder head bolt. This bolt has a full shank diameter. ... 15.73 mm (0.619 inch)

Use the following procedure in order to tighten the cylinder head bolts with the full shank design:

1. Tighten bolt (1) through bolt (26) in a numerical sequence.

   Tighten the bolts to the following torque. ... 150 ± 15 N·m (110 ± 11 lb ft)

2. Tighten bolt (1) through bolt (26) again in a numerical sequence.

   Tighten the bolts again to the following torque. ... 150 ± 15 N·m (110 ± 11 lb ft)

3. Place an index mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence.

   Rotate the bolts in the clockwise direction. ... 90 degrees (1/4 turn)

4. Loosen bolt (1) through bolt (26) until the washers are loose under the bolt heads.

5. Tighten bolt (1) through bolt (26) in a numerical sequence.

   Tighten the bolts to the following torque. ... 150 ± 15 N·m (110 ± 11 lb ft)

6. Tighten bolt (1) through bolt (26) again in a numerical sequence.

   Tighten the bolts again to the following torque. ... 150 ± 15 N·m (110 ± 11 lb ft)

7. Place an index mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence.

   Rotate the bolts in the clockwise direction. ... 90 degrees (1/4 turn)

8. Tighten bolt (27) through bolt (33) in a numerical sequence.

   Tighten the bolts to the following torque. ... 28 ± 7 N·m (20 ± 5 lb ft)

Illustration 3	g00661562
Cylinder head bolt with reduced shank design

(B) This is a reference dimension for the diameter of the shank of the cylinder head bolt. This bolt has a reduced shank diameter. ... 14.58 mm (0.574 inch)

Use the following procedure in order to tighten the cylinder head bolts with the reduced shank design:

1. Tighten bolt (1) through bolt (26) in a numerical sequence.

   Tighten the bolts to the following torque. ... 160 ± 15 N·m (120 ± 11 lb ft)

2. Tighten bolt (1) through bolt (26) again in a numerical sequence.

   Tighten the bolts again to the following torque. ... 160 ± 15 N·m (120 ± 11 lb ft)

3. Place an index mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence.

   Rotate the bolts in the clockwise direction. ... 90 degrees (1/4 turn)

4. Loosen bolt (1) through bolt (26) until the washers are loose under the bolt heads.

5. Tighten bolt (1) through bolt (26) in a numerical sequence.

   Tighten the bolts to the following torque. ... 160 ± 15 N·m (120 ± 11 lb ft)

6. Tighten bolt (1) through bolt (26) again in a numerical sequence.

   Tighten the bolts again to the following torque. ... 160 ± 15 N·m (120 ± 11 lb ft)

7. Place an index mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence.

   Rotate the bolts in the clockwise direction. ... 90 degrees (1/4 turn)

8. Tighten bolt (27) through bolt (33) in a numerical sequence.

   Tighten the bolts to the following torque. ... 28 ± 7 N·m (20 ± 5 lb ft)