GENERATOR GP 5029769 - Caterpillar

Hydraulic Cylinders
Cylinder Identification Right Side Of Machine
(1) Tilt cylinder. (2) Stick cylinder. (3) Loader cylinder. (4) Boom cylinder. (5) Swing cylinder. (6) Stabilizer cylinder. (7) Lift cylinder.
(8) Oil seal. (9) Wear seal. (10) Wear band. (11) Buffer seal. (12) Cup seal. (13) Wiper. (14) Piston. (15) Rod. (A) Head end. (B) Rod end.The backhoe and loader cylinders are the threaded gland design. Rod end (B) assembly is called the gland. It houses wear band (10), buffer seal (11), cup seal (12) and wiper (13). The gland is threaded into the expanded rod end of the cylinder. This keeps the gland threads bathed in oil to prevent them from corroding.Piston (14) is secured to the rod with a bolt and washer. The piston incorporates oil seal (8) and wear seal (9).Loader Lift Cylinders
There are two loader lift cylinders (basic design). One is mounted on each side of the loader tower. When the head ends are pressurized, the cylinder will extend and the loader will raise. Pressurizing the rod end will lower the loader.A lock bar and pin are located on the right lift cylinder. The lock bar should be installed on the cylinder if the loader has to be raised during repairs or servicing. During normal operation, store the lock bar on the loader arm.Loader Tilt Cylinder
The loader bucket cylinder (basic design) is mounted on the tilt linkage. The linkage connects the cylinder to the bucket and lift arm cross tube. The rod is connected to the bucket. When the head end of the cylinder is pressurized, the bucket will tilt back. The bucket will dump when the rod end is pressurized.Multi-Purpose Bucket Cylinders
The multi-purpose bucket (not shown) has clam cylinders (basic design) on each end of the bucket. When the rod ends of the cylinder are pressurized, the clam will open. Pressurizing the head ends will close the clam.Backhoe Boom Cylinder
The backhoe boom has a single cylinder. When the head end of the cylinder is pressurized, the boom lowers. Pressurizing the rod end raises the boom.
Boom Cylinder
(1) Cylinder body. (2) Rod end. (3) Spring. (4) Snubber. (5) Head end. (6) Head end port.The Boom cylinder has an integral head end snubber (4). The snubber cushions the boom as it hits the load stop. As the cylinder retracts, snubber (4) enters head end port (6). The oil trying to leave the head end chamber is restricted. This reduces piston speed thus creating a cushioning effect.When head end (5) is pressurized, snubber (4) is moved left against the force of spring (3). The restriction is eliminated. The cylinder piston returns to normal operation. Now pressure entering head end port (6) forces the cylinder piston to the left.Backhoe Stick Cylinder
The stick cylinder (basic design) is mounted on the boom. When the head end is pressurized, the stick dips down. Pressurizing the rod end raises or extends the stick, thus increasing the backhoe reach.Backhoe Bucket Cylinder
The bucket cylinder is mounted on the stick. The cylinder rod is connected to a four bar