PANEL GP-CONTROL 2952829 - Caterpillar

Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
(A) (1)Hydraulic Cylinder Repair Stand 1
3S-6224 Electric Hydraulic Pump 1
(B) 4C-4475 (2) 110 mm Socket 1
4C-4476 (3) 115 mm Socket 1
(1) If the Wolff Hydraulic Cylinder Repair Stand is not available to disassemble the boom cylinder, consult the Caterpillar Service Technology Group.
(2) This socket is used with 096-5740 Locknut.
(3) This socket is used with 123-2060 Locknut.Start By:
Remove the boom cylinder. Refer to Disassembly and Assembly, "Boom Cylinder - Remove" in this manual. Note: Several other boom cylinder groups are available. The disassembly procedure which follows is similar for all the boom cylinder groups. However, refer to Specifications, SENR9285 for the correct specifications for a specific boom cylinder group.
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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g00483223
(1) Rod assembly
(2) Seal
(3) Ring
(4) Seal
(5) Seal
(6) Head
(7) Bearing
(8) Ring
(9) Bolts
(10) Ring
(11) O-ring seal
(12) Cylinder assembly
(13) Stop
(14) Ring
(15) Piston
(16) Seal assembly
(17) Ring
(18) Ring
(19) Ring
(20) Shim
(21) Locknut
(22) Setscrew
(23) Ball
(24) Lip seal
(25) Bearing
(26) Grease fitting
(27) Lip seal
Put the boom cylinder on Tooling (A). The weight of the boom cylinder is 240 kg (530 lb).
Remove grease fitting (26) from cylinder assembly (12).
Remove 12 bolts (9) that secure head (6) to cylinder assembly (12).
Use Tooling (A) to slide rod assembly (1) out of cylinder assembly (12).
Remove two rings (19), two rings (18), two rings (17) and seal assembly (16) from piston (15).
Remove setscrew (22) and ball (23) from locknut (21). Use Tool (B) in order to remove locknut (21) that secures piston (15) to rod assembly (1). Remove shim (20) and the piston from the rod assembly. Remove stop (13) from the rod assembly. Remove ring (14) from the rod assembly.
Slide cylinder assembly (12) onto the rod assembly. Install 12 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 (10), O-ring seal (11), ring (8) and bearing (7) from the head. Remove seal (2), ring (3), seal (4) and seal (5) from head (6).
Remove lip seals (24) from both sides of the cylinder assembly at the pin bore.
Remove lip seals (27) from both sides of the rod assembly at the pin bore.
Remove bearings (25) from the cylinder assembly and the rod assembly at the pin bores.