PISTON 2990213 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 8S-7615 Pin 2
284-5122 Stand 1
8S-7641 Tube 1
8S-8048 Saddle 1
B 439-3938 Link Bracket 2
C 154-6184 Forcing Bolt 2 Start By:
Remove the grapple.
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 g06231347
Position boom (1) onto Tooling (A), as shown.
Illustration 2 g06231349
Remove cover (2) from boom (1).
Illustration 3 g06231350
Disconnect hose assemblies (3).
Illustration 4 g06231351
Attach Tooling (B) and a suitable lifting device to hydraulic rotator (4). The weight of hydraulic rotator (4) is approximately 204 kg (450 lb).
Illustration 5 g06231345
Remove bolts (5).
Illustration 6 g06231346
Use Tooling (C) to separate hydraulic rotator (4) from boom (1).
Use the suitable lifting device to lower rotator (4) to the ground.Installation Procedure
Install hydraulic rotator (4) onto boom (1) in the reverse order of removal.