JLG 340AJ, Service And Maintenance Manual

Page: 199 / 370

SECTION 5 - HYDRAULICS
3121259 – JLG Lift – 5-39
Disassembly
SHAFT SEAL REMOVAL
1. Orient pump with the shaft pointing up.
2. Remove the spiral ring (J300) from the front housing to
release the shaft seal carrier (J275).
3. Pry on the lip of the seal carrier to remove it from the
pump.
4. Remove and discard the O-ring (J260) and seal (J250)
from the seal carrier.
INPUT SHAFT
1. Pull the shaft with bearing out of the pump. If necessary,
tap lightly on the shaft to dislodge it from the internal
pump components.
DO NOT DAMAGE THE HOUSING BORE, SHAFT OR BEARING WHEN REMOVING
THE SHAFT AND SHAFT SEAL.
2. Remove the snap ring (J200) using snap ring pliers.
3. Use an adequate press to remove the bearing from the
shaft.
EDC CONTROL REMOVAL
1. Remove control screws (D250) using a 5 mm internal
hex wrench. Remove the control from the pump.
2. Remove and discard the gasket (D150).
3. Using a 13 mm deep well socket wrench, remove feed-
back pin (D200) from top of swash plate.
4. If necessary, remove the screen (D084).
SCREEN (D084) MAY BE LOOSE AND FALL OUT OF CONTROL. TAKE CAUTION
NOT TO LOSE IT.
5. If necessary, remove orifices (F100) using a 3 mm inter-
nal hex wrench.
DOWEL PINS (D300) ARE A PRESS FIT AND WILL REMAIN IN HOUSING.