Clean all parts in solvent and dry with compressed air.
Inspect the bearings (Item 1) and shaft (Item 2) [Figure 30-21-22] for wear or damage.
The bearings are sealed. If the bearings do not roll smoothly, or if the seals are damaged, replace the bearings.
Replace any worn or damaged parts.
Remove all paint and corrosion from the seal surface (Item 1) [Figure 30-21-23] on both sides of the idler.
Using a bearing driver, install the bearing in the idler [Figure 30-21-24].
Install the snap ring (Item 1) [Figure 30-21-25].
Turn the idler over and place the idler on the support fixture (Item 1) [Figure 30-21-26].
Install the shaft (Item 2) [Figure 30-21-26].
Install the bearing (Item 1) [Figure 30-21-27]. Use a brass drift to seat the bearing.
Install the snap ring (Item 1) [Figure 30-21-28].
Apply assembly lube to the inside diameter (Item 1) [Figure 30-21-29] of the seal.
Apply a small bead of high temperature silicone sealant around the flange surface (Item 2) [Figure 30-21-29] of the seal.
Using the driving tool, install the seal (Item 1) [Figure 30-21-30] on both sides of the idler.
Install the block (Item 1) and roll pin (Item 2) [Figure 30-21-31] on both sides of the shaft.
