SECTION 4 - HYDRAULICS
3121642 – JLG Lift – 4-13
2. Clamp front cover into vise so that the ring groove is up.
Apply a small amount of grease to the seal groove and
install a new seal ring (8) into the groove.
3. Apply lubriplate or equivalent to outer surface of drive
shaft installation tool. Insert tool (bullet) into shaft seal
from seal ring groove side of front cover.
4. Place a small amount of grease on the seal groove on
the front bearing block (2). Install a new load seal and
anti extrusion seal in the groove. Insert the bearing
block into the body, making sure that the load seal (3)
and anti extrusion seal (4) are positioned properly.
Ensure the outside of the "W" seal is exposed to the dis-
charge pressure.
5. Apply a small amount of grease to the dowel pins (7)
and install the pins into the body (13).
6. Set the body (13) onto the front cover (5), matching the
scribe marks on the body and front cover. The dowel
pins (7) should go into the mating holes on the front
cover (5).
7. Install drive gear (12), and driven gear (11).
8. Place a small amount of grease in the seal groove on the
rear bearing block (2). Install a new load seal and anti
extrusion seal in the groove. Insert the bearing block
into the body, making sure that the load seal and anti
extrusion seal are positioned properly. Ensure the out-
side of the "W" seal is exposed to the discharge pressure.
9. Apply a small amount of grease to the seal groove in the
rear cover (6) and install a new seal ring (8) into the
groove. Set the rear cover (6) onto the body (13), match-
ing the scribes marks on the body and rear cover.
10. Insert he cap screw (14) and washers (9); torque to 42-46
lb-ft. (57-62 Nm).
11. On models equipped with keyed drive shaft, install drive
key (10).
12. With an adjustable wrench, check that the drive shaft
turns without evidence of a mechanical bind.
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