SPACER 4U7048 - Caterpillar

Assembly Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     138-7576     Link Bracket     1    
B     1P-0510     Driver Group     1    
Clean all parts and inspect all parts. If any parts are worn or damaged, use new Caterpillar parts for replacement.
Illustration 1 g00724486
If necessary, lower the temperature of two bushings (10) and install the bushings to each push bar. Use Tooling (B) to seat the bushings in the bars.
Illustration 2 g00724570
If necessary, lower the temperature of two bushings (4) and bushing (6) and install the bushings to both sections of each jaw. Use Tooling (B) in order to seat the bushings in the jaw.
Illustration 3 g00724345
Attach Tooling (A), appropriate lifting chains, and a hoist to the Grapple housing. The weight of the assembly is 1480 kg (3263 lb). The housing must be supported throughout the assembly procedure.
Install the pins that secure the hydraulic cylinders to each jaw. Install the plates and the bolts to each pin. This will provide a suitable lifting point. Install appropriate nylon lifting slings and a suitable lifting device in order to support the jaw during assembly. Refer to Table 2 for the weights of the jaws.
Table 2
Weights of the Jaws    
Part Number     Position of the Jaw     Weight    
174-1659     Left jaw    
392 kg (864 lb)    
174-1660     Right jaw    
388 kg (855 lb)    
Lift the Grapple housing.
Lift a jaw and place the jaw into position on the housing.
Apply 4C-5598 High Temperature Anti-Seize to pin (5). Align the pin with the stops on the jaw. Use a hammer to install the pin. Repeat this step for the remaining pin.
Apply 9S-3263 Thread Lock Compound to bolt (2). Install plate (3) and the bolt to pin (5). Repeat this step for the remaining pin.
Remove the lifting slings from the cylinder pins and remove the pins from the jaw.
Repeat Step 7 through Step 10 in order to install the other jaw.
Place push bar (1) into position in the housing.
Apply 4C-5598 High Temperature Anti-Seize to pin (7). Align the pin with the stops on the jaw. Use a hammer to install the pin.
Repeat Step 12 and Step 13 for the remaining push bar.
Apply 9S-3263 Thread Lock Compound to bolt (8). Install plate (9) and the bolt to each pin.End By:
Install the hydraulic cylinders. Refer to Service Manual, "Hydraulic Cylinder - Install".
Connect the hydraulic rotator to the grapple housing. Refer to Service Manual, "Hydraulic Rotator and Grapple Housing - Connect".