JLG 340AJ, Service And Maintenance Manual

Page: 239 / 370

SECTION 5 - HYDRAULICS
3121259 – JLG Lift – 5-79
2. Install shaft seal into front flange.
Prepare the flange and shaft seal by lightly.
lubricating with grease.
Seat the seal in the flange by hand. Then, using the shaft
seal installation tool (shown on page 52), press the seal
until the tool stops on the flange. This will insure the seal
is inserted to the proper depth.
3. Install snap ring.
Install the snap ring using internal snap ring pliers.
Ensure the snap ring fits securely in its groove. This is
necessary to retain the shaft seal.
4. Install pressure seals.
Prepare the pressure seals by lightly lubricating them
with grease.
Install pressure seals into the grooves on the front flange
and rear cover. Then install the teflon backup ring.
Ensure that the seals are located in the grooves, as
shown.
5. Prepare the body.
Clean the body.
Inspect the internal and mating surfaces. Ensure the sur-
faces are free of burrs and scratches. Check both the
bearing block mating surface and the cut-in path. The
cut-in path should be no deeper than 0.1 mm (0.004 in).