BLADE AS-SEMI-UNIVERSAL 3494605 - Caterpillar

Disassembly Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
(A)     125-0079     Hydraulic Cylinder Repair Stand     1    
152-4249 Hydraulic Cylinder Repair Stand (1)     1    
(B)     4C-8092     Universal Wrench     1    
Secondary Tools (2)    
    3S-6224     Electric Hydraulic Pump     1    
8T-0820 Pressure Gauge     1    
3B-7722 Bushing     2    
1P-2377 Plug     2    
8F-0024 Hose Assembly     2    
4C-4465 Adapter     1    
1P-0851 Spline     1    
4C-4482 150 mm Socket     1    
( 1 ) CE Compliant
( 2 ) The secondary tools are used with the Wolff Hydraulic Cylinder Repair Stand. If a hydraulic repair stand is not available to disassemble the cylinder, consult the Caterpillar Service Technology Group.Start By:
Remove the stick cylinder. Refer to Disassembly and Assembly, "Stick Cylinder - Remove" in this manual.
Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed.Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death.Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g00601493
Place the stick cylinder on Tooling (A) . The weight of the stick cylinder is 825 kg (1820 lb).
Remove bolts (9) that secure head (6) to cylinder assembly (1) .
Use Tooling (A) to slide cylinder assembly (1) from rod assembly (8) . While the rod assembly (8) is supported, use a suitable lifting device in order to remove the cylinder assembly (1) from the repair stand.
Use Tooling (B) to remove locknut (3) that secures piston (4) to rod assembly (8) .
Remove piston (4) from rod assembly (8) .
Remove ring (10) , ring (11) , stop (12) and rings (13) .
Remove two rings (14) , seal assembly (15) , and ring (16) from piston (4) .
Remove stop (5) . Remove ring (17) .Note: The following step is performed in order to support the head during the removal.
Slide cylinder assembly (1) onto the rod assembly. Install bolts (9) that secure head (6) to the cylinder assembly. Pull the cylinder assembly and head (6) as a unit away from the rod assembly. Remove the head from the cylinder assembly.
Remove ring (18) , O-ring seal (19) , ring (20) , and bearing (21) from head (6) .
Remove lip seal (25) , ring (24) , seal (23) , and seal (22) from head (6) .
Remove lip seals (2)