All Copyright and rights are the property of Johnston Sweepers Ltd
MA9:5
V Range 501
l
651
l
801 Maintenance Manual
Johnston Sweepers Limited
Chapter - Service Tools
Page Issue A
Note
:
On either new machines or after repairs the following checks should be carried out to ensure that the
system is free of air.
•
Select
HydroDrive
gearbox by operating the appropriate switch
F
located on the centre
console, the warning LED
H
should illuminate. If not, simply select 1st gear, release the
clutch to its bite point and the
HydroDrive
gearbox will engage and the LED illuminate.
•
Monitor the pressure on
T4,
select 1st gear on the chassis release the clutch for 20 seconds
and then depress it again. Wait a short while then repeat. Keep repeating this process until
the pressure at
T4
starts to increase. Depending on the ratio of the chassis gearbox the
pressure may stabilize below the required 24bar. In order to achieve a higher pressure,
progressively change gear i.e. 2nd - 3rd etc. until 24bar is achieved. Top up hydraulic tank
as required.
6.
To enable the engine rpm to increase to the minimum operating speed select the correct gear that
gives 1:1 ratio, and activate the Sweeper igniton switch
E
located on the centre console.
Selecting the ignition switch will automatically increase the chassis rpm to its preset Minimum limit of
1100, on condition that the correct gear has been selected.
Note:
If the incorrect gear has been selected then the chassis engine rpm will remain at idle.
Release the handbrake.
Ensure all other switches are in their off - select forward using the drive select joystick.
Progressively press the pedal until the rear wheels start to rotate.
Allow the wheels to rotate slowly for a short while then return the drive select to neutral and allow the
wheels to stop.
Select reverse and again progressively press the pedal until the rear wheels start to rotate.
During this process keep an eye on the oil level - top up as required.
7.
Alternating between forward and reverse, repeat this process six times.
Note
:
At all times the pressure on the gauge for
T4
should be maintained at approximately 24 bar.
Pump Set-up - Relief Valve Settings
Pressure setting -
Maximum forward - 420bar - test point
T3 - located on transmission pump.
Maximum reverse - 350bar - test point
T1
- located on anti skid block.
Attach suitable 0-500bar gauges via an extension tube to the test points
T1
and
T3
, refer to section
23 of the Technical Manual for test point locations.
When the
HydroDrive
is engaged if the chassis is in gear and the clutch is released the front
prop shaft will be turning
Safety Notice
