GEAR-IDLER 4194941 - Caterpillar

At operating temperature, the hydraulic oil tank is hot and under pressure. Hot oil can cause burns. Remove the fill cap on the hydraulic oil tank only when the engine is stopped, and the fill cap is cool enough to touch with your bare hand.
1. Release the pressure in the hydraulic system by slowly loosening the fill cap on top of the hydraulic oil tank.2. Drain the hydraulic oil from the hydraulic oil tank into a suitable container. The capacity of the hydraulic oil tank is 72 liters (19 U.S. gal). 3. Disconnect hose assemblies (1) and (2) from vibratory motor (3). Cap and plug immediately. For photographic purposes the yoke is removed from the machine.4. Remove two bolts (4), and remove vibratory motor (3) and O-ring seal from the drum support housing. Check the O-ring seal for damage or wear and replace if necessary. For installation of the vibratory motor, reverse the removal steps. After the vibratory motor has been installed, fill the hydraulic oil tank to the correct level. See the Operation & Maintenance Manual for the correct filling procedure.Disassemble & Assemble Vibratory Motor
Start By:a. remove vibratory motor1. Be sure the outside of the vibratory motor is thoroughly clean prior to disassembly. 2. Remove four bolts (1) and end cap (2). 3. Remove valve plate (3), gasket (4), needle bearing (5), and locating pin (6). Needle bearing (5) is press fit in end cap (2).
During removal of the rotary group (8) from housing (7), do not let the components fall apart. The piston assemblies (9) should be installed in their original bores in the slipper guide (10) and cylinder block (11).
4. Lay housing (7) on side and remove rotating group (8). 5. Put identification marks on seven pistons (9) as to their location in the slipper guide (10) and cylinder block (11). 6. Remove retainer guide (12), four pins (13), and retainer (14).
There is spring force against washer (15). When retaining ring (16) is removed, the spring force will be released. To prevent possible personal injury, removal of the internal components in cylinder block (11) should be performed in a press in order to retain spring (17) and washer (15).
7. Put cylinder block (11) in a press. Install a suitable drive plate of the same size as the washer (15). Put a slight compression on the washer (15) with the press. Remove the retaining ring (16) and slowly release the spring compression. 8. Remove notched washer (15), spring (17) and washer (18). 9. Remove swash plate (19).10. Remove retaining ring (21), seal (22), retaining ring (23) and remove shaft (24). 11. Remove retaining ring (25), bearing (26) and retaining ring (27). Bearing (26) is press fit on shaft (24). The following steps are for the assembly of the vibratory motor. All motor components must be cleaned and inspected before assembly. If any components are worn beyond recommended limits they must be replaced. Lubricate all moving parts with clean oil during assembly. Assembly motor with all new