LINES GP - 4699760 - Caterpillar

Table 1
Required Parts List    
Qty     New Part Number     Description     Former Part Number    
2     448-1988     Angling Cylinder Gp     344-5133    New 448-1988 Angling Cylinder Gp is now available as a replacement for the former 344-5133 Angling Cylinder Gp .The new 448-1988 Angling Cylinder Gp is adaptable to all machines that are listed above.If desired, the 344-5133 Angling Cylinder Gp can be reworked. Use the following procedure to rework the 344-5133 Angling Cylinder Gp.
Illustration 1 g03586577
344-5133 Angling Cylinder Gp (A) 8T-5065 Locknut (B) 344-5134 Piston (C) 8C-9160 Seal As (D) 6J-2797 Wear Ring (E) 175-7900 O-Ring Seal (F) 2K-6830 Backup Ring (G) 237-4860 Self-Aligning Bearing
Remove the failed 344-5133 Angling Cylinder Gp from the machine. Refer to Disassembly and Assembly, KENR8915, "Angle Cylinder (Bulldozer)", "Removal Procedure" to remove the angling cylinder group.
Inspect the replacement cylinder for the rework identification etching/marking "344-5133-04" near the lines port on the rod end. If the etching marking is "344-5133-04", install the cylinder on the machine.If the cylinder still reflects an older change level, perform the following procedure to bring an older cylinder up to "344-5133-04" which has the same benefits as a 448-1988 Angling Cylinder Gp .
Remove locknut (A) and discard the part. Use new locknut (A) for later use.
Increase piston (B) tightening specification to 1300 65 N m (960 48 lb ft).
Install new locknut (A) and tighten to a specified torque of 900 50 N m (664 37 lb ft).Note: Lubricate the threads and face of locknut (A) prior to tightening.
As needed, replace seal assembly (C) and wear ring (D) on the piston, and O-ring seal (E) and backup ring (F) on the head.
Assemble back the angling cylinder group. Refer to Disassembly and Assembly, KENR8915, "Angle Cylinder (Bulldozer)", "Installation Procedure" to install the angling cylinder group.
Once the rework is completed, mark the reworked cylinder body by etching or marking the part number identification with "344-5133-04". This mark can be found near the lines port on the rod end.
Repeat Step 1 through 8 for the opposing cylinder.
Inspect the condition of the cylinder rod eye self-aligning bearing (G) and replace, if needed.
Replace the reworked cylinder on the machine.
Grease all four bearings (G) liberally.
Before assembling the angle circuit hoses for both cylinders, replace four 3K-0360 O-Ring Seals and four 6V-8398 O-Ring Seals .