Assembly, Assembly -9 – JLG 680S Service Manual User Manual

Page 57

SECTION 3 - CHASSIS & TURNTABLE

3121234

– JLG Lift –

3-9

Assembly

1. Assemble the variable displacement pump in

reverse order.

2. Measurement of the taper roller bearing pretension

(see adjustment figure).

NOTE: There is a correct connection of the piston rod and

swash plate.

3. Pumps clockwise driven must have a position of the

valve plate 4° out of center in the same direction
decentered like drive direction.

NOTE: Spare parts exist as clockwise and counter-clock-

wise valve plates.

4. Pumps anti-clockwise driven must have a position of

the valve plate 4° decentered in counter-clockwise
position.

5. Assemble of the port plate and pomp housing:

NOTE: The correct position of the drilling that connects high

pressure to the control valve. Check control valve
drilling position at the pump housing and fit together.