Duncan Enviro 740, Owner'S Manual

Page: 30 / 72

28
fig 33
fig 35
fig 36
1
1
1
1
2
fig 34
Maintenance Schedule
(Refer also to Summary Chart P27)
1 Bolted Connections
All bolted connections on the machine should be checked after
the first 30 hours of operation and retightened if necessary
thereafter at regular intervals. (1000 hectares or annually
whichever occurs first).
2 Gearbox
The oil level in the gearbox can be seen in the oil gauge
window. Changing the gearbox oil is normally not necessary.
For refilling the oil remove the 1/2” BSP plug on the top face
of the gearbox, hydraulic oil Castrol Hyspin AWH 32-68 should
be used. The total filling capacity is 1.25 litres. Refer Fig 33/1.
DO NOT OVERFILL.
3 Clutch
The clutch which is located inside the RH side frame should be
removed, flushed dried and re-assembled annually. Use
NO
LUBRICANT such as CRC. For assembly diagram refer P60 in
the parts section of this manual.
4 Roller Chains
All drive chains should first be checked after 20 hours of
operation and thereafter weekly or after 100Ha of operation as
follows:-
The metering wheels of the seed drill are driven via roller chains
from the drive wheel.
The roller chain concealed in the wheel arm has a spring loaded
tensioner, but should still be checked periodically by removing
the cover on the inside face of the wheel arm. This tensioner
must be free to pivot. Refer Fig 34/1.
All other drive chains, apart from the drive from the front gearbox
output shaft to the front seedbox, have spring loaded tensioners,
but should still be checked at regular intervals as previously
mentioned. Refer P 27, Fig 32.
Removing the guard from the outside of the gearbox gives
access to the tensioner on the input drive.
All other tensioners on the output end of the gearbox are
accessed by removing both the fibreglass cover around the
gearbox output sprockets and the rear top cover plate.
To tension the drive chain from the gearbox output shaft to the
front seedbox, loosen the bolts retaining the gearbox to the side
plate and adjust as required.
Cleaning of the roller chains is recommended after long periods
of operation. Remove the chain, wash in kerosene and then
dip them in heated grease or oil or spray them with a suitable
commercial roller chain lubricant.
5 Pivot Bearing Grease Nipples
(Refer Lubrication Chart P27)
Grease at regular intervals (weekly or after 100Ha). There is one
grease nipple per run on the front coulter pivot. (Fig 36/1) and in
the ends of the wheel arm pivot pins (Fig 34/2 & Fig 35/1)
Grease nipples and the grease gun should be carefully cleaned
before use and dirty grease should be fully discharged from the
bushes. Wipe off excess grease and dispose of safely.