RIX Industries MAN-2PS2B-N2 Page 18
1. Slide new main bearing onto the crankshaft. Verify that the bearing is pressed up against
the shoulder on the crankshaft.
2. Install crankshaft and piston side bearing into crankcase. Heating may be required.
3. Apply Loctite 7471 Primer/Activator (RIX P/N 35-8595) to OD surface of flywheel side
bearing and ID surface of the bearing housing. Allow activator to dry for 3-5 minutes. Apply
continuous bead of Loctite 680 Bearing Retaining Compound (RIX P/N 043588-01) around
the OD surface of the flywheel side bearing and the ID surface of the bearing housing.
4. Install the flywheel side bearing by sliding the bearing over the keyed end of the crankshaft
until a few threads are accessible. Install a new lock washer followed by the bearing nut.
Screw the bearing nut onto available threads by hand then continue turning by wrench until
it is torqued to 50 ft-lbs. Bend the lock washer tab to secure the bearing nut.
5. Wipe away excess Bearing Retaining Compound using a lint-free rag. Do not allow excess to
enter the bearing. Allow 24-hours for the Bearing Retaining Compound to cure while the
compressor is in the upright position. Do not install the flywheel bushing, flywheel, or belt
during this 24-hour cure period. Do not handle machine by crankshaft during this cure
period.
6. Reinstall piston assemblies, cylinders, and heads per Sections 7.7, 7.5 and 7.3. It is okay to
install these components during the 24-hour cure period.
7.9 Piston to Head Clearance
The piston to head clearance of both stages is factory set and should not need adjustment unless
one or more parts of the following items are replaced: cylinder, piston/piston assembly, connecting
rod, crankshaft, or crankcase.
To adjust the 1st stage piston clearance, use the following procedure:
1. Remove the 1st stage head per Section 7.3.
2. While holding the cylinder firmly in place, rotate crankshaft to ensure piston is at Top Dead
Center (TDC).
3. Measure the clearance between the piston and the top of the cylinder. Shims may be added
or removed to achieve piston to cylinder clearance of .011" to .015".
4. Reinstall the head per Section 7.3.
To adjust the 2nd stage piston clearance, use the following procedure:
1. Remove the 2nd stage head per Section 7.3.
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