Installation Procedure for 370-8613{0679, 6502} Caterpillar

Excavator:

316E (S/N: DZW1-UP)

Introduction

This Special Instruction is for the welding procedures to install 370-8613 Bracket Kit . Consult your local Cat dealer if you require more information regarding the installation of the bracket assembly.

Do not perform any procedure that is outlined in this publication. Do not order any parts until you understand the information that is contained in this document.

ReferenceRefer to your host machine Operation and Maintenance Manual prior to performing this installation.

ReferenceService Guide, SEBD0512, "Caterpillar Service Welding Guide"

ReferenceSpecial Instruction, REHS1841, "General Welding Procedures"

Welding Requirements

Welding quality is critical to the success of the installation procedures. Welds must be smooth and continuous. Do not undercut the welds. No overlap is allowed. Grind the ends of the welds to a smooth radius.

Prepare the metal for welding according to the next section. Refer to the illustrations in this special instruction for welding symbols and specifications.

Be sure that all electrodes are dried. The electrodes can be dried by heating the electrodes to 300°C (572°F). The electrodes must be dried for at least 30 minutes.

Do not weld in windy conditions. Do not weld when temperatures are below 16°C (60°F).

Penetration characteristics may vary greatly depending on the following conditions:

• Electrode diameter

• Shielding gas

• Welding current

• Plate thickness

The following items also affect the welds:

• Geometry of welded joints

• Surface conditions

• Composition of the base metal and of the electrode

For more welding information, consult the General Welding Procedures, REHS1841.

Preparing the Metal for Welding

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Personal injury can result from flame cutting or welding on painted areas. The effect of gasses from burned paint is a hazard to the person doing the cutting or welding. Do not flame cut or weld on painted areas.

All grease, paint, and foreign objects must be removed before welding. Any of these materials will discharge gas which will cause porosity in the weld deposit. Water and rust will cause hydrogen embrittlement. Hydrogen embrittlement causes cracks in the weld deposit.

Remove foreign objects with a wire brush, a buffer, or a grinder. Shot blasting the appropriate areas will also remove foreign material.

Note: After welding, allow all areas to cool to room temperature. After the areas have cooled, paint the area with primer. After the primer has dried, coat the area with Cat 4C-4200 Yellow Paint .

Safety Section

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Personal injury or death can result from sudden work tool movement. Sudden movement of the work tool can cause injury to persons near the work tool. To prevent injury or death, make sure that the area around the work tool is clear of personnel and obstructions before operating the work tool.

Required Parts

Installation Procedure

Prevent the machine from movement. Park the machine on a level surface.

Illustration 1	g00104545

Attach a "Do Not Operate" warning tag to the start switch or controls before you service or repair the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Cat dealer.

This procedure will require the use of a suitable lifting device or devices to position the parts safely.

1. Position the machine so the bottom of the stick is accessible.

2. Remove paint as needed for a clean welding surface.

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Illustration 2	g02795315
(A) 2042 ± 2 mm (80 ± 0.08 inch) (B) 161 ± 2 mm (6 ± 0.08 inch)

3. Center bracket assembly (2) and stop plate (3) on the bottom of the stick as shown.

4. Tack weld bracket assembly (2) and stop plate (3) to the stick.

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Illustration 3	g02795718
Close up of areas to be welded (2) 370-8614 Bracket As (3) 370-8617 Stop Plate (W1) AWS A5.18ER70S-2 or equivalent

5. Weld bracket assembly (2) to the stick. Make a continuous weld from point (C) to point (D). Then make a continuous weld from point (E) to point (F) as shown. Make a continuous weld in the center of bracket assembly (2) as shown.

6. Weld stop plate (3) to the stick. Make a continuous weld as shown in Illustration 3.
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   Table 2

   Stick Size	(1) 288-1939 Plate
   3.10 m (10 ft)	(G) 1962.6 ± 2 mm (77 ± 0.08 inch)
   	(H) 1912.6 ± 2 mm (75 ± 0.08 inch)
   	(I) 246.3 ± 2 mm (9.7 ± 0.08 inch)
   	(J) 245.1 ± 2 mm (9.6 ± 0.07 inch)
   	(K) 1861.9 ± 2 mm (73 ± 0.08 inch)
   	(L) 1811.9 ± 2 mm (71 ± 0.08 inch)
   2.90 m (9 ft)	(G) 1962.6 ± 2 mm (77 ± 0.08 inch) ()
   	(H) 1912.6 ± 2 mm (75 ± 0.08 inch) ()
   	(I) 246.2 ± 2 mm (9.6 ± 0.08 inch)
   	(J) 245 ± 2 mm (9.6 ± 0.07 inch)
   	(K) 1861.9 ± 2 mm (73 ± 0.08 inch) ()
   	(L) 1811.9 ± 2 mm (71 ± 0.08 inch) ()
   2.60 m (8 ft)	(G) 1757.2 ± 2 mm (69 ± 0.08 inch)
   	(H) 1707.2 ± 2 mm (67 ± 0.08 inch)
   	(I) 243.8 ± 2 mm (9.6 ± 0.08 inch)
   	(J) 242.7 ± 2 mm (9.5 ± 0.08 inch)
   	(K) 1656.6 ± 2 mm (65 ± 0.08 inch)
   	(L) 1606.2 ± 2 mm (63 ± 0.08 inch)

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Illustration 4	g02796489
Left side

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Illustration 5	g02796758
Right side

7. Remove paint as necessary for a clean welding surface.

8. Tack weld plate (1) on stick as shown in Illustrations 4 and 5. Use table 2 for dimensions for placement based on stick size.

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Illustration 6	g02797067
Close up of area for plate (1) (1) 288-1939 Plate (M) 4 welds 30 mm (1.18 inch) minimum (W1) AWS A5.18ER70S-2 or equivalent

9. Make a continuous extension of the root pass and fillet weld to a length of 30 mm (1.18 inch) tapering to a 3 mm (0.19 inch) in height in that distance. Grind surfaces to flush at each end.

10. Allow the welded areas to cool

11. Prepare the welded areas for paint

12. Apply a rust prevention coat and a finish coat.