BRACE AS 9W4931 - Caterpillar

Assembly Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     1U-9901     Hydraulic Cylinder Repair Stand     1    
3S-6224 Hydraulic Pump     1    
B     1U-8792     Chain Wrench     1    
C     8T-5245     Torque Multiplier     1    
1P-0851 Spline Adapter     1    
1P-0852 Male Adapter     1    
5P-1748 Impact Socket     1    
D     1P-0510     Driver     1    Reference: Refer to Specifications, "Bulldozer Lift Cylinder" in the Service Manual for your machine.
Inspect the components for wear and for damage. Replace the components with new components, if necessary. Make sure that the components are clean. Apply clean oil to the surfaces of the components during assembly.
Illustration 1 g00614180
Install seal (14) and seal (18) in head (9). The lip of seal (14) must be oriented toward seal (18) .
Use Tooling (D) in order to install seal (17) in the head.
Align the hydraulic cylinder and cylinder rod (8) on Tooling (A) .
Position head (9) in the hydraulic cylinder.
Apply clean oil to the seals in head (9). Make sure that the cylinder rod is aligned with the seals in head (9). Use Tooling (A) in order to connect cylinder rod (8) with the cylinder and with the head.
Use Tooling (A) in order to separate the cylinder from head (9) and from cylinder rod (8) .
Install the spacers under plungers (11) .Note: Align the flat sides of two inserts (19) across the piston, as shown. See Illustration 1.
Install plungers (11) and inserts (19) in piston (10) .
Install backup ring (15) and O-ring seal (16) on head (9). O-ring seal (16) must be oriented toward the cylinder during installation.
Position piston (10) on cylinder rod (8) .
Install the rubber expansion ring on piston (10). Install seal (13) over the rubber expansion ring.
Install wear ring (12) on the piston.
Apply clean oil to the threads of bolt (20). Install bolt (20) with the washer in the end of cylinder rod (8) .
Use Tooling (C) in order to tighten bolt (20) to a torque of 3600 400 N m (2700 300 lb ft). Remove Tooling (C) .
Apply clean oil to the seals of the piston and of the head. Use Tooling (A) in order to connect the cylinder to the cylinder rod and to the head.Note: Position the cylinder rod in contact with the piston during the installation of the head.
Install the head on cylinder (7). Tighten the head to a torque of 600 130 N m (440 95 lb ft).
Heat bearings (5) to a maximum temperature of 135 °C (275 °F). Install one bearing on each side of the lift cylinder. The bearings must not extend beyond the ends of the trunnion. The correct outside diameter of the bearings after installation is 63.089 0.058 mm (2.484 0.002 inch).
Illustration 2 g00597266
Install the O-ring seal in hose assembly (2). Install hose assembly (2) on lift cylinder (1) .
Install the