Nordson HORIZON 200, Product Manual

Page: 90 / 124

Repair
7-24
Part 106913 − 04
E 2018 Nordson Corporation
Fan Shaft and Bearing Installation
New-Style Bearings Only:
Install
1
/
16
-in. shims between the mounting
surface and the expansion bearing (2). Do not install shims on the
non-expansion bearing (9).
1. Install the new bearings on the supports with the screws, washers, and
nuts. Do not tighten the screws. Connect the tubing to the tube fittings.
2. Install the shaft through the bearings. If you have trouble getting the
shaft through the bearings,
New-Style Bearings:
Loosen the lock nut.
Old-Style Bearings:
Try one or more of the steps below:
S
Loosen the bearing-race set screws.
S
Clean the shaft and ID of the bearing inner-race with a clean cloth
and a small amount of penetrating oil. Do not get any oil inside the
bearing races. The penetrating oil will dissolve the grease needed to
lubricate the bearings.
S
Gently drive the shaft through the bearings with a soft-faced mallet
or a hammer. If you use a hammer, place a block of wood on the
end of the shaft and strike the wood, not the shaft.
S
Chill the shaft in a freezer or with dry ice and install it through the
bearings while it is cold.
3. Level the shaft and square it with the support.
4. If removed, install the fan sheave, bushing, and key on the shaft.
Tighten the bushing cap screws enough to hold the sheave on the shaft.
Refer to the Sheave Replacement procedure.