Preparation. Remove grease from new parts before installation.
Packing Installation. Lubricate all packings with a thin coating of light lubricating oil before
installation. Slightly stretch packing and place into position. Rotate component on flat surface or
uniformly press the packing into position.
Pipe Joints. Use sealing pipe-joint compound or thread sealing tape when joining piping.
Gaskets. To provide added sealing for gasket, coat both sides with sealant. Remove all traces
of previous gasket and sealant before installing new gasket.
Silicone Sealant (Sealing Compound).
O n direct contact, uncured silicone sealant irritates eyes. In case of contact,
flush eyes with water and seek medical attention. Avoid prolonged contact
Silicone sealant is often used instead of a gasket to seal mating parts. Mating parts must be
clean, dry, and free of oil or grease for proper adhesion. After silicone sealant has been
applied, mating parts must be assembled within 15 minutes. Silicone sealant starts to set up in
15 minutes and takes 24 hours to completely cure. Excess silicone sealant should be wiped off
after assembling mating parts.
Oil Seals. Install oil seals with seal lip facing toward lubricant, applying an even force to outer
edge of seal. Coat oil seals evenly with grease before installing. If oil seals will be installed
over keyed or splined shafts, use a guide. This will prevent sharp edge of keyway or splines
from cutting the leather or neoprene seal. Construct guides of very thin-gage sheet metal and
shape to required diameter. However, make certain guide edges are not sharp. Bend them
sightly inward so they do not cut the seal.
Seal Rings. Coat seal rings with oil and carefully install into their bores. If seal rings must be
installed over threaded parts, temporarily wrap the threads wifh tape to protect the seal ring.
Bearings and Shafts. During assembly of shafts and bearings in housings, first mount bearing
on shaft, then install the assembly by applying force to shaft. When mounting bearings on
shafts, always apply force to the inner races of the bearing.
Bearing Lubrication. Lubricate bearings before reassembly with the type of lubricant normally
used in the related housing or container. This will provide lubrication' during the first run-in until
lubricant from the system can reach the bearings.
Preparation. Before installing any parts, make sure they are clean and that both mounting
surfaces are clean and free of oil and grease (unless otherwise noted).
Installation. Make sure there is enough clearance to install part. Disassemble adjacent parts as
needed to provide working clearance.
Lifting. Always use chain hoist, jack, or other aid when lifting heavy parts. Make certain load
limit of lifting device exceeds weight being lifted. Position and rig lifting device before
connecting part for installation.