Upright 503502-000, Service & Parts Manual

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Page 3-17
Maintenance 3.10 - Hydraulic Pump
TL50 Service & Parts
3.10 H
YDRAULIC
P
UMP
Figure 3-8: Hydraulic Pump
R
EMOVAL
NOTE: If the hydraulic tank has not been drained,
suitable means for plugging the hoses should be
provided to prevent excessive fluid loss.
1. Mark, disconnect, and plug the hose
assemblies.
2. Loosen the capscrews and remove the
pump assembly from the motor.
I
NSTALLATION
1. Lubricate the pump shaft with general pur-
pose grease and attach the pump to the
motor with the capscrews.
2. Using a criss-cross pattern torque each capscrew a little at a time until all of the capscrews
are torqued to 27 Nm (20 Ft/lbs).
3. Unplug and reconnect the hydraulic hoses.
4. Check the oil level in the hydraulic tank before operating the work platform.
3.11 H
YDRAULIC
C
YLINDER
(
SLAVE LEVELLING
)
Note : Removal of the slave cylinder requires the cage to be held in position by suitable
support slings or by another person.
R
EMOVAL
1. Disconnect both hoses and plug ends to avoid excessive oil spillage. Note which hose goes to
which port.
2. Remove lock plate securing bolt and spring washer from both the rod end pin and body end
pin.
3. Remove lock plates.
4. Hold cage assembly in position and knock out rod end pin and body end pin.
5. Remove cylinder.
I
NSTALLATION
1. Lift the cylinder into place and insert the body
end pin in through the cylinder and boom.
Note: take care in aligning the pin in the
holes so that the pin can be pushed in by
hand. If the pin and holes are not properly
aligned and the pin is forced in, the bush-
ings will be damaged.
2. Line the cage cradle holes up with the cylin-
der rod hole and insert the rod end pin.
3. Slide both locking plates into the groves on
the pins and secure with the bolts and washers.
4. Test with weight at rated platform load to
check system operation.
PUMP
1. Cylinder
2. Lock Plate
3. Pivot Pin
4. Telescopic Boom 5. Cage Cradle
1
2
3
4
5
3