STEP 9W0451 - Caterpillar

Note: Note the number and locations of the shims, for installation purposes.
Disconnect hose assemblies (4) and remove the retaining bolt on pin assembly (5) .
Use Tooling (B) in order to remove pin assembly (5) and the spacer. Remove the shims at the rod end of the stick cylinder. The weight of pin assembly (5) and Tooling (A) is approximately 136 kg (300 lb).
Remove stick cylinder (2) .Disassembly and Assembly
Table 2
Required Tools    
Tool     Part Number     Part Description     Qty    
C     -     LOCTITE 271     1    
D     7M-7456     Bearing Mount Compound     1    
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.
Illustration 4 g02198337
(1) Lubricate threads with hydraulic oil. For 385B and 385C machines, Tighten to ... 21000 1050 N m (15489 774 lb ft) For 390D machines, Tighten to ... 20000 1000 N m (14751 738 lb ft) (2) Lubricate both the inside and outside diameters with clean grease. (3) Apply Tooling (C) to the threads. Tighten to ... 28 7 N m (21 5 lb ft) (4) Lubricate threads with the lubricant that is being sealed. Tighten to ... 80 4 N m (59 3 lb ft) (5) Cutout must face the piston. (6) Lubricate the sealing lip with the lubricant that is being sealed. (7) Apply Tooling (D) to the grove of the wiper seal prior to assembly.Installation Procedure
Table 3
Required Tools    
Tool     Part Number     Part Description     Qty    
A     8S-7615     Pin     1    
4C-6486 Stand     1    
8S-7641 Tube     1    
E     5P-0960     Grease Cartridge     -    
F     9U-6758     Pin Driver Cap     1    
Attach a suitable lifting device to support stick cylinder (2) . The weight of stick cylinder (2) is approximately 840 kg (1852 lb).
Position stick cylinder (2) into the boom bore.
Illustration 5 g02197333
Illustration 6 g00878247
Apply Tooling (E) to the pin on pin assembly (5) .
Temporarily install pin assembly (5) with Tooling (F) . Align the pin bore in the rod end of the stick cylinder with the pin bore in the stick. Install the original shim pack between the stick cylinder and the stick pin bore. The weight of pin assembly (5) is approximately 91 kg (200 lb).
Slide the stick to one side until the stick contacts the boom. Measure total Clearance (X) between the stick and the boom at the pin bore. The total clearance must not be more than 1.0 mm (0.04 inch). If the total clearance is less than 1.0 mm (0.04 inch), the addition of shims between the stick and the boom will not be