SOLENOID 2744202 - Caterpillar

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.Remove any oil or grease with a Caterpillar approved solvent.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 .Installation Procedure
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.Installation Procedure of 318-1497 Connecting Lines Gp
Table 1
Parts List for 318-1497 Connecting Lines Gp - 01    
Item    Qty    Part
Number    Description    
(1)     2     160-7731     Plate    
(2)     2     194-6517     Hose As    
(3)     1     194-6518     Hose As    
(4)     2     124-0195     Elbow    
(5)     1     1P-3703     Rectangular Seal    
(6)     1     1P-3704     Rectangular Seal    
(7)     4     1P-4576     Half Flange    
(8)     2     1P-5767     Half Flange    
(9)     1     242-7334     Hose As    
(10)     2     2P-1293     Locknut    
(11)     2     4J-5267     O-Ring Seal    
(12)     2     5K-9090     O-Ring Seal    
(13)     8     5S-7382     Bolt    
(14)     2     6V-0400     Half Flange    
(15)     2     6V-9746     O-Ring Seal    
(16)     4     8T-4184     Bolt    
(17)     4     8T-4194     Bolt    
(18)     8     8T-4223     Hard Washer    
(19)     8     8T-4896     Hard Washer    
Illustration 2 g02149124
Illustration 3 g02149134
(A) 895 mm (35.24 inch) (B) 114 mm (5 inch) (C) Weld on both sides of the stick.
Release the pressure in the implement hydraulic circuits (boom, stick, and bucket) before any hydraulic lines or components are disconnected or removed.
In order to prevent oil leakage, apply a vacuum to the hydraulic tank or drain the hydraulic tank. If you drain the hydraulic tank, drain the oil into a container that is large enough to contain the oil. Dispose of the oil in a proper manner.Note: Refer to ""Welding Requirements"" and ""Preparing the Metal for Welding"" in this Special Instruction before welding.
Weld one plate (1) to both sides of the stick. Refer to Illustration 3 for the dimensions.Note: Perform the following step for both sides of the stick.
Attach hose assembly (2) to the bulk head plate that was welded in Step 3. Use one elbow (4), one locknut (10), and one