TUBE AS 2374108 - Caterpillar

Modification Procedure
Remove the 258-3427 Film (Caterpillar) from the outside of the rear door.Note: Use a heat gun and apply heat to the film in order to aid in removing the film.Discard the film.
Illustration 1 g01517368
(A) 216-4703 Rear Lighting Harness As (B) 258-0930 Stop and Tail Lamp Gp (C) 161-2539 Alarm As (D) 6V-7357 Bolt (E) 8T-4205 Hard Washer (F) 3S-2093 Cable Strap (G) 7K-1181 Cable Strap (H) 231-3925 Bracket As (J) 7X-2537 Bolt (K) 5P-4116 Hard Washer (L) 131-3540 Locknut (M) Service film (N) 159-8405 Shoulder Bolt (O) 2K-4973 Locknut
Perform Step 2.a through Step 2.e in order to remove components from the inside of the rear door. Refer to 1.
Disconnect the two lamps (B) from harness (A). Then, remove the two lamps (B) from the rear door.Retain the two lamps (B) for reinstallation.
Disconnect backup alarm (C) from harness (B). Then, remove the two bolts (D), the two hard washers (E), and alarm (C) from the rear door.Retain the two bolts (D), the two hard washers (E), and alarm (C) for reinstallation.
Remove the three cable straps (F) and cable strap (G) in order to disconnect harness (A) from the rear door.
Remove the two bolts (J), the four hard washers (K), and the two locknuts (L) that fasten bracket assembly (H) to the rear door.Note: Do not remove the 285-5794 Coolant Recovery Gp from bracket assembly (H). Also, do not disconnect the 5P-1420 Hose from the coolant overflow reservoir.Temporarily secure the bracket assembly with the coolant recovery group to the frame inside the engine compartment.Retain the two bolts (J), the four hard washers (K), and the two locknuts (L) for reinstallation.
Remove the service film (M) from the inside of the rear door.Note: Use a heat gun and apply heat to the film in order to aid in removing the film.Discard the service film.
Remove the two bolts (N) and the two locknuts (O) that secure the rear door to the frame. Then, remove the rear door from the machine. Lay the rear door on a flat surface with the outside surface upward.Retain the two bolts (N) and the two locknuts (O) for reinstallation.
Illustration 2 g01517369
(V) 104 mm (4 inch) (W) 283 mm (11 inch) (X) 382 mm (15 inch) (Y) 764 mm (30 inch) (Z) 64 mm (2.5 inch) Radius
Cut a rectangular opening in the rear door per the dimensions that are specified in Illustration 2. Grind the edges of the opening in order to smooth the edges.
Turn over the rear door so that the inside surface is upward.
Illustration 3 g01518613
(1) Grill (T) 152.5 mm (6 inch) (U) 402.5 mm (15.8 inch)
Center grill (1) over the opening in the rear door. See Illustration 3.Then, weld the grill to the rear door. Make 2.0 mm (0.08 inch) fillet welds 25 mm (0.98 inch) long. Make these welds around the entire perimeter of the grill. Leave a 50