JLG 340AJ, Service And Maintenance Manual

Page: 208 / 370

SECTION 5 - HYDRAULICS
5-48 – JLG Lift – 3121259
Assembly
SHAFT AND SEAL INSTALLATION
1. Orient pump with the mounting flange pointing up.
2. Using an adequate press, press the bearing (J150) onto
the shaft (J100) and install the retaining ring (J200).
Ensure the retaining ring diameter is less than 38.84 mm
[1.53 in] once installed on the shaft.
3. Lubricate and install a new O-ring (J260) onto seal car-
rier (J275). Press a new seal (J250) into the seal carrier so
the solid side of the seal is against the shoulder of the
seal carrier.
NOTE: Seal does not need to be flush with surface of seal carrier.
Top of seal may be 0.12 mm [0.005 in] above surface or
0.72 mm [0.028 in] below surface of seal carrier.
4. Install the shaft assembly into the front housing. Cover
the shaft with an installation sleeve to protect it during
installation of the seal carrier.
5. Hand press the seal carrier (J275) into the housing.
Ensure the seal carrier clears the spiral ring groove in the
housing. Remove protective cover from shaft end.
6. Install the spiral ring (J300) into the housing. The inside
diameter of the ring must be at least 68 mm [2.677 in]
after installation.
SWASHPLATE BEARINGS AND SWASHPLATE
INSTALLATION
1. Position housing with front flange pointing down.
NOTE: Always replace swashplate bearings (D075).
2. Coat swashplate bearings (D075) with hydraulic fluid
and install them onto the swashplate (D070). The inner
race of the swashplate bearing clips onto the swash-
plate.