COOLER-OIL 4168292 - Caterpillar

This change is effective for the serial numbers listed in Table 2.
Table 2
Effective Serial Numbers    
S/N:TWY00704-UP    
S/N:TWZ00535-UP    Refer to Special Instruction, REHS7798, "Procedure for Removing and Installing the Exhaust Cooler (NRS) on All Tier 4 C15 and C18 Engines" for additional information.Note: A new 324-9290 Bellows As and two new 9N-5085 Clamp will be installed on the exhaust inlet side of the NRS cooler. A new 9N-5085 Clamp will be installed on the exhaust outlet side of the NRS cooler.
Illustration 1 g03847836
(1) 436-9149 Cooler As (2) 344-2636 Clamp As
Illustration 2 g03895722
(3) 7L-6580 O-Ring Seal (4) 444-3517 Tube As (5) 450-2351 Band Clamp (6) 118-7214 O-Ring Seal (7) 444-3516 Tube (8) 445-6881 Hose (9) 4F-7391 O-Ring Seal
Illustration 3 g03895724
(6) 118-7214 O-Ring Seal (10) 8T-9588 O-Ring Seal (11) 442-7347 Elbow Heat Shield Modifications
Illustration 4 g03896433
(12) 388-9195 Heat Shield As (Front Wrap) (13) 388-9194 Heat Shield As (Side Wrap)
Remove heat shield (12) .
Remove heat shield (13) .
Illustration 5 g03896438
(A) 48 mm (1.890 inch) (B) 7.5 mm (0.295 inch) (10) 388-9195 Heat Shield As (Front Wrap)
Illustration 6 g03896446
(C) 25 mm (0.984 inch) (12) 388-9195 Heat Shield As (Front Wrap)
Cutout heat shield (12). Refer to Illustrations 5 and 6 for the correct dimensions.
Illustration 7 g03896440
(14) Area to be crimped
Crimp cutout area (14) with pliers. Make sure that the fiber glass is not exposed.
Illustration 8 g03849182
Reinstall the modified 388-9195 Heat Shield As (Front Wrap) and the 388-9194 Heat Shield As (Side Wrap). Refer to Illustration 2 for the location to hook the extra spring clip.