RIX Industries MAN-2PS2B-N2 - Main Bearings

RIX Industries MAN-2PS2B-N2 Page 17
7.8 Main Bearings
The crankshaft is supported in the crankcase by two main radial ball bearings.
To remove the main bearings, reference Figure 2 and follow the instructions below:
1. Remove heads, cylinders, and piston assembly per Sections 7.3, 7.5 and 7.7.
2. Remove flywheel.
3. Bend locking tab on lock washer and remove bearing nut.
4. Heat bearing housing (piston side) and push out crank. Flywheel side bearing will remain
in housing.
5. Remove the flywheel side bearing by either method below:
a. *Use Bearing Removal Tool (RIX P/N 043686-01) to remove the bearing from the
outboard side. When installing the Bearing Removal Tool, ensure the tool is installed
with the feet securely on the flats of the bearing housing. Apply tension to the
bearing removal tool by torquing the drive-nut after the tool jaws are seated on the
bottom edge of the inner race of the bearing. Heat may be applied evenly around the
bearing housing to break the Retaining Compound bond. Recommend heating the
bearing housing no higher than 225°F. Once the bearing begins to move, continue
applying torque to the drive-nut to remove the bearing. Note: A ¾ crows-foot style
wrench, or similar, may be useful for torquing the drive-nut of the Bearing Removal
Tool.
b. Use a suitable fixture to push the bearing out from the inboard side. Heat may be
applied evenly around the bearing housing to break the Retaining Compound bond.
Recommend heating the bearing housing no higher than 225°F.
*Bearing Removal Tool (RIX P/N 043686-01) can also be used to remove the piston
side bearing.
6. Remove residual Bearing Retainer from bearing housing by applying **Rust-Oleum Aircraft
Paint Remover Spray (RIX P/N 043688-01), or similar aluminum-safe solvent, to the
bearing housing. Apply liberally and allow to soak until the residual has softened. Once
softened, remove residual with steel wool or lint-free rags. Some light scraping may be
required, be careful not to scratch the bearing housing if doing so. Iterate this process, as
needed, until all residual Bearing Retaining Compound can be removed from the bearing
housing.
**Rust-Oleum Aircraft Paint Remover Spray (RIX P/N 043688-01) only available for
purchase through RIX domestically (United States).
To install new main bearings: