A New Exhaust Manifold Group Is Now Used On C27 Industrial And Petroleum Engines{1059} Caterpillar

Industrial Engine:

C27 (S/N: WJC1-UP)

Petroleum Engine:

C27 PETROLEUM (S/N: NAR1-UP)

Introduction

Note: Read and understand this Special Instruction before proceeding.

A new torque procedure is used to prevent denting of the exhaust pipe and bending the exhaust bracket. The update to the exhaust is done with 332-8694 Exhaust Manifold Gp and 359-1377 Exhaust Manifold Gp

.

Required Parts

Rework Procedure

Exhaust Manifold Gp

Removal and Install Of Left Side Exhaust

Note: Read and understand the instructions listed below before performing any repairs.

Show/hide table



Illustration 1	g03365248
(1) 379-5074 Heat Shield As (2) 349-7000 Shield (3) 418-3706 Heat Shield As (4) 343-6890 Temperature Sensor Gp

1. Remove temperature sensors (4) and heat shields (1), (2) and (3) .

Show/hide table



Illustration 2	g03357780
Left Side View

Show/hide table



Illustration 3	g03357786
(5) 8N-0879 Clamp (6) 2N-2766 Locknut (7) 364-2633 Band Clamp (8) 243-3566 Bellows As (9) 200-2653 U-Bolt

2. Remove locknuts (6) that fasten the U-bolt (9) to the exhaust tube and remove the U-bolt (9). Then remove the clamps (5) on the bellows (8) and the band clamp (7) that connects the exhaust tube to the Y-manifold at the turbo.

Show/hide table



Illustration 4	g03357812

3. Slide the exhaust tube towards the front of the engine. Then rotate the turbo end of the tube away from the engine and remove the exhaust tube.

Show/hide table



Illustration 5	g03357848
(8) 243-3566 Bellows As (10) 343-8989 Bracket

4. Remove and discard the bellows (8) and the bracket (10).

Show/hide table



Illustration 6	g03357866
(11) 339-0455 Strip (12) 4L-6454 Bolt (13) 8T-4896 Hard Washer

5. Install the strip (11) as shown above using bolts (12) and washers (13).

   Note: Exhaust manifolds and tubes are hidden to show mounting hole locations in detail.

Show/hide table



Illustration 7	g03357876
(5) 8N-0879 Clamp (7) 364-2633 Band Clamp (8) 243-3566 Bellows As (14) 399-8937 Tube As

6. Install a new bellow assembly (8), clamps (5), clamp (7) and new tube assembly (14). The new tube assembly (14) is between the Y manifold and the exhaust manifold for the front three cylinders on the left side exhaust manifold.

Show/hide table



Illustration 8	g03357952
(13) 8T-4896 Hard Washer (15) 422-9436 Clip (16) 422-9435 Clip (17) 6V-1943 High Temperature Bolt

7. Install the new two piece clamps (11) and clamp (12) using bolt (13) and washer (9) .

Show/hide table



Illustration 9	g03365248
(1) 379-5074 Heat Shield As (2) 349-7000 Shield (3) 418-3706 Heat Shield As (4) 343-6890 Temperature Sensor Gp

8. Install temperature sensors (4) with 337-7965 Anti-Seize Compound . Torque sensors to 45 ± 5 N·m (33 ± 4lb ft). Then install exhaust shields (2), (3), and (4) .

Removal And Installation Of Right Side Exhaust

Show/hide table



Illustration 10	g03364856
(1) 349-6999 Shield (2) 354-2429 Heat Shield As (3) 377-1053 Heat Shield As (4) 343-6890 Temperature Sensor Gp

1. Remove temperature sensors (4) and heat shields (1), (2) and (3) .

Show/hide table



Illustration 11	g03357989
Right Side View

Show/hide table



Illustration 12	g03357995
(5) 364-2633 Band Clamp (6) 2N-2766 Locknut (7) 8N-0879 Clamp (8) 243-3566 Bellows As (9) 200-2653 U-Bolt

2. Remove the locknuts (6) that fasten to the U-bolt (9) and remove the u-bolt (9). Also remove the clamps (7) on the bellow (8), and the clamp (5) that connects the exhaust tube to the Y manifold at the turbo.

Show/hide table



Illustration 13	g03358044

3. Slide the exhaust tube towards the front of the engine. Then rotate the turbo end of the tube away from the engine and remove the exhaust tube.

Show/hide table



Illustration 14	g03358049
(8) 243-3566 Bellows As (10) 343-8989 Bracket

4. Remove and discard the bellow assembly (8) and the bracket (10).

Show/hide table



Illustration 15	g03358073
(11) 339-0455 Strip (12) 4L-6454 Bolt (13) 8T-4896 Hard Washer

5. Install the strip (11) as shown above using two bolts (12) and two washers (13).

   Note: The exhaust manifolds and tubes are hidden to show the mounting hole locations in detail.

Show/hide table



Illustration 16	g03358087
(5) 364-2633 Band Clamp (7) 8N-0879 Clamp (8) 243-3566 Bellows As (14) 399-8938 Tube As

6. Install a new bellow assembly (8), two clamps (7), clamp (5), and right-hand tube assembly (14). Install tube assembly (14) between the Y manifold and the exhaust manifold for the front three cylinders on the right-hand exhaust manifold.

Show/hide table



Illustration 17	g03358103
(15) 6V-1943 High Temperature Bolt (16) 8T-4896 Hard Washer (17) 422-9436 Clip (18) 422-9435 Clip

7. Install the new two piece clips (17) and (18) using bolt (15) and washer (16).

Show/hide table



Illustration 18	g03364856
(1) 349-6999 Shield (2) 354-2429 Heat Shield As (3) 377-1053 Heat Shield As (4) 343-6890 Temperature Sensor Gp

8. Install temperature sensors (4) with 337-7965 Anti-Seize Compound . Torque sensors to 45 ± 5 N·m (33 ± 4lb ft). Then install exhaust shields (2), (3), and (4) .