JLG 660SJ Service Manual - Manual (Page 62)

SECTION 3 - CHASSIS & TURNTABLE
3-18 – JLG Lift – 3121298
Shaft Seal Replacement
REMOVAL
1. Remove snap ring (1) retaining shaft seal, and support
washer.
Figure 3-22. Removing Shaft Seal
2. Remove support washer (2).
3. Carefully pry out shaft seal (3).
NOTE: To avoid damaging shaft during removal, install a large
sheet metal screw in chuck of a slide hammer. Drive screw
in seal surface and use slide hammer to pull seal.
4. Discard seal.
INSPECTION
Inspect new seal, motor housing seal bore, and sealing area on
shaft for rust, wear, and contamination. Polish shaft and clean
housing if necessary.
INSTALLATION
1. Cover shaft splines with an installation sleeve to protect
shaft seal during installation.
2. Install new shaft seal with cupped side facing motor.
Press seal into housing until it bottoms out. Press evenly
to avoid binding and damaging the seal.
3. Install seal support washer.
4. Install snap ring.
5. Remove installation sleeve.
1. Snap Ring
2. Support Washer
3. Shaft Seal
1
2
3