JLG 340AJ Service Manual User Manual
Page 240
SECTION 5 - HYDRAULICS
5-82
– JLG Lift –
3121259
13.
Clean the mating surfaces.
Remove any excess lubrication and grease from the mat-
ing surfaces of the front flange and rear cover. Ensure
that these surfaces are dry and free of contamination
before moving on to the next step.
Ensure the pressure seals are seated properly after this
operation.
14.
Install Rear Cover.
Mount the cover on the body. Ensure the arrow on the
back is oriented properly. The arrow should be:
• In the same direction as the flow if the unit is a pump.
• Against the direction of the flow if the unit is a unidi-
rectional motor.
• If the unit is a bidirectional motor the arrow does not
appear on the cover.
Ensure that all the pressure seals stay in place during
this operation.
15.
Prepare pump for front flange assembly.
Place the pump with the rear cover downwards.
Ensure that the assembly marks on the bearing block /
body are properly aligned.
16.
Install the front flange.
Install a protective sleeve over the shaft. The sleeve is
used to protect the shaft seal from damage by the shaft
splines / keyway during front flange assembly.
Install the flange onto the body, then remove the pro-
tective sleeve.
Ensure that the seals remain seated in their grooves dur-
ing this operation.