John Berends Implements RM 80 User manual

John Berends
Implements Pty Ltd
AGRICULTURAL ENGINEERS
OPERATOR’SMANUAL
PARTSLIST
RM 80 TRAILING OFFSET DISC CULTIVATOR
PRODUCT NO.
0850/0860/0870 20 Plate with 24” x 5mm/24” x 6mm/26” x 6mm Discs
0851/0861/0871 24 Plate with 24” x 5mm/24” x 6mm/26” x 6mm Discs
0852/0862/0872 28 Plate with 24” x 5mm/24” x 6mm/26” x 6mm Discs
0853/0863/0873 32 Plate with 24” x 5mm/24” x 6mm/26” x 6mm Discs
130 FRANKSTON-DANDENONG RD, DANDENONG SOUTH, VIC. 3175 AUSTRALIA
(ABN 79 007 035 369)
PHONE [phone] FAX NO. [phone]
[e-mail] www.johnberendsimplements.com.au

TABLEOFCONTENTS
PageNo.
SAFETY INSTRUCTIONS.......................................................................................3
INTRODUCTION………………………………………………………………………….5
SAFETY FEATURES..............................................................................................6
ASSEMBLY..............................................................................................................7
OPERATION............................................................................................................9
MAINTENANCE.......................................................................................................11
SPARE PARTS........................................................................................................12
DISC SET-UP……………………………………………………………………………...16

3
SAFETY
Farm machinery is dangerous if operated incorrectly so please read this manual in its entirety
prior to operating the machine.
No operator, however experienced in farm machinery operation, should attempt to use
any machine they have not been competently trained to use. Your local Department of
Agriculture can help you with training, as can most Occupational Health and Safety offices,
Agricultural schools and colleges and farm equipment dealerships.
All instructions relating to tractor safety as per the tractor operators manual should be
followed. When making any machine adjustments, stop the tractor engine first and wait for all
moving parts to stop. Maintain the tractor to ensure it remains safe to use. Do not operate
faulty or damaged equipment.
Extreme caution should be taken when fitting equipment to the tractor’s three point
linkage. Avoid standing between the implement and the tractor when coupling machinery.
All machines should be mounted and retained correctly. All guards must be kept in
place and correctly maintained. P.T.O. shafts must be correctly attached and secured to both
the tractor and the machine. Decals must be visible and legible at all times. Keep well clear of
all moving parts.
Keep all people and animals at a safe distance from all moving parts. Children must not
be allowed to operate this equipment and all passengers must have the same level of
protection as the operator.
Wear protective clothing where appropriate.
Never operate when tired (not alert) or in poorly lit areas and stay alert for humps and
other hidden hazards. Remove all timber, rocks and foreign objects prior to operation.
Avoid operating the machine in wet conditions.
Exercise extreme caution when changing direction on hills. Avoid sudden movement,
sudden breaking, high speeds, rough terrain and steep slopes.
If machine starts to vibrate, stop tractor, turn off engine and investigate.

4
After striking a foreign object or if there are doubts about the performance of the
machine, stop the tractor as described and check if machine is making excessive noise.
Extreme caution must be taken when working in public areas (roadsides etc). It is
recommended that flaps and chains are fitted to slashers when operating in public areas.
These are available as optional extras. Rear flaps are compulsory in public areas.
Watch overhead clearance and beware of underground pipes and cables.
Where fitted, hydraulic hoses and fittings must be maintained so as to prevent damage.
Do not modify this equipment in anyway, or use it for any other purpose than it was
designed to do.
Never work under unsupported machines or adjust unsupported machines. Do not
enter the danger zone where a load being carried by a machine could fall on you, for example
a round bale from a bale fork, a log from a carryall or material from a rear end loader.
These instructions should be used in conjunction with any local regulations regarding safety ie
OHS.
Maintenance is essential for safe operation. Ensure maintenance is carried out
regularly by people qualified to do so. This is of particular importance on P.T.O.
drive machines where driven parts can fly off at high speed if wearing parts are
not properly maintained.
FAILURETOFOLLOWTHESEINSTRUCTIONSAND
PROCEDURESMAYRESULTINEQUIPMENT
MALFUNCTION,ORDAMAGE,SERIOUSINJURYOR
EVENDEATH.

5
INTRODUCTION:
This manual was developed specifically for the machine you have purchased. The information within is
to assist you in preparing, operating and maintaining your machine. Please read and understand the
contents of the manual completely before attempting to operate your machine, paying special attention
to all safety details. With our policy of continuous improvement, products and specifications may change
without notice and without incurring the obligation to install such changes on any unit previously
delivered.
RM80 Trailing Offset Disc Cultivators
Gibbins Rawling have been making ploughs since 1878 - over 100 years of experience! The RM 80
offset disc cultivating plough is designed for extremely tough Australian conditions. It is similar to the
RM75 with the main difference being in the greater number of bearings and shorter axles in the disc
gang assemblies. It is an ideal disc for both primary and secondary tillage on 75 H.P. to 165 H.P.
tractors. The gang bolt axles are made from 40mm square high tensile steel and all bearings are
greaseable. Fitted with 610mm x 5mm (24” x 3/16”), 610mm x 6mm (24” x ¼”) or 660 x 6mm (26” x ¼”)
scalloped discs. Single pressure screw can be adjusted to transfer weight to the rear of the cultivator,
resulting in even disc penetration. Easy gang adjustment provides a perfect level finish. Hydraulic ram
and hoses for wheel lift are standard. Fully adjustable drawbar and pronged scrapers are standard on the
RM80 with options of formed scrapers for heavy soils.
MACHINESPECIFICATIONS
20Plate 24Plate 28Plate 32Plate
Approx. weight 1700kg 1970kg 2190kg 2510kg
No. Bearings 8 12 12 16
Cutting Width 2.3m (7’6”) 2.74m (9’) 3.2m(10’6”) 3.66m (12’)
No. Axles 4 6 6 8
WARRANTY
John Berends Implements P/L warrants each new product sold to be free from defects in material and
workmanship, under normal use and service, as outlined in the operators manual, for a period of 12
months.
This warranty is void if any damage to the machine has been caused by misuse or non genuine parts
have been used or any repairs have been made by any persons other than authorised dealer service
personnel.
The manufacturer/dealer is not obligated to any transportation charges incurred in the repair or
replacement of parts.
This warranty does not exclude any condition or warranty implied by the Trade Practices Act 1974 or any
other legislation which implies any condition which cannot be excluded.
Copyright 1998 This Safety Manual is copyright and no part may be reproduced without
the written permission of John Berends Implements.

6
SafetyFeatures
1. SERIAL NUMBER (Decal – inside frame)
2. WARNING DECAL
3. BERENDS DECAL (Top of frame)
2
1 3

7
MACHINE ASSEMBLY
GANG ASEMBLY
CAUTION: Due to the size and awkward nature of the trailing discs it is important that all
components are adequately supported.
As there are a number of sizes of discs available, refer to the attached set-up sheet on the
back page in this manual. It provides approximate measurements to suit your discs.
Adjustments may need to be made to suit different ground conditions.
Both gangs are different so distinguish which is the front and which is the back prior to
assembly. The scrapers are mounted at the rear of each gang.
FRONT GANG:
Position the front gang under the main frame in the approximate position it will be secured in.
Starting with the left hand side (direction of travel), place the front “U” bolt (Pt 3375) over the
main frame side-members, with the thread pointing down. The left hand side front “U” bolt will
be located in front of the main frames’ front cross member. Bring the two frames together and
placing the clamp plate (Pt 3381) under the gang frame, secure with nuts and spring washers.
The front “U” bolt on the right hand side should be placed behind the main frames’ cross
member and the clamp plate secured with nuts and spring washers. Secure the back two “U”
bolts on the front gang in their appropriate positions, making sure that threads always point
downwards.
REAR GANG:
When attaching the rear gang, the simplest way may be to reverse the main frame and front
gang over the rear gang. Alternatively, lift the back of the main frame up and support it whilst
rolling the rear gang into position. Starting with the right hand side, place the rear “U” bolt
approximately 225mm behind the main frame cross member and using the clamp plate secure
the frames with nuts and spring washers. On the left hand side of the rear gang, the rear “U”
bolt should be 610mm from the same cross member and secure using the clamp plates and
nuts and spring washers provided.
DRAWBAR ASSEMBLY
Generally the drawbar runs in the right hand half of the pull bar. For initial set up, position the
drawbar approximately 280mm from the right hand side of the pull bar. Tighten the drawbar
plates (Pt 3388) securely with the four bolts, nuts and spring washers provided. The height
adjustment of the drawbar must be set so it is pulling fairly straight when in the ground.
Therefore the front gang is neither lifting out of the ground nor dipping into the ground. The
correct setting and adjustment may be made to the drawbar by connecting it to either the
bottom or top of the tractor connecting point. Additional height adjustment can be obtained by
turning the drawbar upside down and connecting it at either the top or bottom of the tractor
connecting point. This should only be done if the adjustment has run out on the tension
springs. Should the discs not be travelling straight it may require the drawbar to be
repositioned along the pull bar until the optimum setting is achieved. The parking jack
(optional) can be used to raise the tractor end of the drawbar. If possible allow the tractor
drawbar to float by removing bars or stabiliser chains which will allow the discs to track straight.

8
WHEEL ASSEMBLY
Position the axle (less the wheels) underneath the main frame between the two gangs. The
two arms of the axle should be facing forward with the main shaft at the rear. The axle lug
(transport lug), which later connects to the hydraulic ram, should be on the right side of the
machine when facing the direction of travel. This axle lug will line up with the opposing
transport lug on the main frame of the plough. Attached to the underside of the main frame are
locating mounts for the axle blocks. There are two pair of axle blocks (Pt 3376) provided, one
pair for each side of the axle. Lift the axle up so it is hanging just below the locating mounts.
CAUTION: As the axle is fairly heavy it is advised that a lifting device is used (eg crane or
lifting jib) to position the axle. The axle must be sufficiently supported when attaching it
to the main frame to prevent it from falling on the person assembling the machine.
Place one of the axle blocks in each of the locating mounts and lift the axle up so as to hold
the block in position. Position the other two axle blocks underneath the axle and hold them in
place using the U-bolts (Pt 3375) provided.
Note: The axle blocks have a recessed semi-circular section, which should be positioned
facing the outside of the main frame (where the axle is welded to the arms).
The U-bolts should face downwards as they do in the gang set-up. Secure all four U-bolts
using the spring washers and nuts provided. Ensure the wheel blocks are still positioned in the
main frame locating mounts.
Fit the flotation tyres (Pt 3373) to the two hubs (PT 3365) and secure with wheel nuts (Pt 3374)
provided. For easy maintenance it is best to have the tyre valves facing outwards. Ensure the
tyres are inflated to the recommended pressure of 45-60PSI
PRESSURE SCREW BAR
Screw the main threaded rod into the main hollow bar and position the first set of nuts/washer
as shown on the right hand side of the diagram below. Place first spring along the shaft and
from the rear of the machine, slide the entire bar (threaded rod end) through the hexagon
knuckle on the vertical mast of the draw bar. The pressure screw bar should then be
connected to the wheelkit axle using in the pin/clip provided. It is suggested that the slotted
hole position be used to begin with. Slide on the second spring and screw on the last set of
nuts/washer. The spring tension should be set up so that the machine is kept stable during
cultivation. For initial set-up refer to the measurements below.
40mm
thread 140mm
thread
1060mm from end of thread
to last half nut
½ Nut
Full Nut
Flat
washer
½ Nut

9
HYDRAULIC RAM AND HOSES
Attach the main body section of the hydraulic cylinder to the bottom hole of the transport lug
on the main frame. Connect the extending rod end of the cylinder to the bottom hole of the
transport lug located on the wheel axle. Secure with clevis pins and clips. Attach the hydraulic
hoses to the ram and fit couplings to the other end of the hoses. Keep the hoses well clear of
the gangs. This is achieved by elevating the hoses using the hose spring (Pt 3389) and clamps
(Pt 3390) which are attached to the drawbar. It may be necessary to secure the hoses to the
main frame further using plastic ties provided. Connect the hoses to the remote hydraulics of
the tractor.
Note: The transport bar is usually used when no hydraulics are available. For example: towing
the discs with a utility. If the transport bar (Pt 3360) is being used, the hydraulic cylinder may
need to be connected with the ports facing the ground. The side port on the hydraulic cylinder
may also need to be used to prevent the bar interfering with the hydraulics.
OPERATION
Once all safety procedures have been followed, start the tractor and raise the disc cultivator off
the ground using the hydraulics.
TRANSPORT
Use the transport bar provided at all times when transporting over long distances. This
prevents the hydraulic ram from being damaged. The transport bar is connected to the upper
hole of the transport lug on the main frame and the upper hole of the transport hole on the
wheel axle. Secure using the pins provided. Remember to remove the transport bar before
using the ram. The bar may remain connected to the rear hole and be flipped backwards when
not in use. By doing this, it is clear of the ram’s movements and always handy when required.
Turning
When turning with the implement whilst cultivating, always turn into the vee of the gangs (to
the right). Otherwise if turning away from the vee of the gang (to the left) the discs are to be
raised clear of the ground until the turn is completed. If this is not done, excessive strain may
be placed on the tractor and discs, eventually causing damage.
Stopping
Lower the cultivator, stop the tractor engine (removing the ignition key) and apply the park
brake. Ensure that the cultivator is well supported when not in use. If detaching the drawbar,
use the parking jack to hold the drawbar in place
CAUTION: When the cultivator is on the ground, yet not linked to the tractor, it may be
unstable. Ensure the machine is prevented from rolling backward or forward.
Levelling the machine
The only positive way to ensure the machine is level, is to work through the ground at the
desired depth. Whilst the discs are still in the ground, check the penetration at each end of the
gang frames. Should the machine require levelling because the discs are lifting out or digging
into the ground, the best suggested method of adjusting is to raise the machine clear of the
ground and adjust the tension springs as required. If one side is digging in more than the other

10
it may be necessary to shift both gangs across so as to transfer the weight away from the side
dipping in.
Wheel set-up
There are a couple of points regarding the setting of the wheel for depth. If the wheels are right
in the air whilst cultivating, all the weight of the frame bears on the gang frames. If the plough
is digging in one side the gangs would need to be adjusted so that the weight of the frame is
on the side which is not digging in. This can only be done within the bounds of the amount of
offset of the machine to the tractor. On the converse side, if the machine is being carried on
the wheels, the frame can be moved so that it carries the side digging in more and stops it
diving in. Remember to always set the wheels at the same position. Setting at ground level
works better than right in the air. If you don’t set the wheels at the same position each run your
setting is different and it make it difficult to work out what your other changes are doing. If the
tractor has a float position then this can be used to keep wheel depth constant.
Tractor behaviour
Should the tractor pull any way but straight, after the machine has been set correctly in a level
position, then the reason can always be contributed to the amount of drag set up by the discs
passing through the ground. This drag can vary to a great extent because of the condition of
the soil eg. wet, dry, sand, clay. As it would be impossible to give an answer to all these
situations, due to the large variation in soil, we will provide the following example:
The machine, when set up correctly, is found to be pulling the tractor badly to the left hand
side. The correction method used in this instance was to slide the draw bar to the extreme right
hand side of the pull bar, resulting in the desired tracking of the tractor. A tractors incorrect
pulling behaviour would be due to an uneven working pressure on the discs and by trying the
following methods there will be a solution, which will correct the tractor’s direction so it will
maintain a straight line to the direction of travel.
a) Check the gangs are set at the correct angles or try an alternate angle (refer (d))
bearing in mind the closer you have the gangs at 90to the frame the lesser the
penetration.
b) Place the draw bar in different positions along the pull bar and vary the angle with each
setting until the optimum is achieved
c) Evenly adjust springs either up or back along the pressure screw. This step is used to
transfer more work to either the front or rear gangs, by digging the discs deeper into the
ground, thus increasing the drag on one or the other gang. When this work is shared
evenly between the two gangs, the tractor will cut straight and true. To increase the
work load of the front gangs, fit the pressure screw in the hole position on the wheelkit
axle (see next section).
d) If you do not wish your machine to have an uneven penetration, e.g. back gang cutting
deeper than the front gang or vice-versa, as described in (c), then the drag is also
affected by the angle of the disc. The greater the angle, the greater the drag, the less
the angle, the less the drag and penetration. So adjusting the angles is another
alternative.
Increasing penetration
As mentioned above (c), greater penetration by the front gang can be achieved by running the
pressure screw in the hole position (rather than the slotted position). When the wheels are
lifted off the ground there will be a transfer of weight from the tractor to the front gang. The
higher the lift the more pressure is created and the greater the front disc penetration. However
this can also affect how true the machine runs and therefore other alterations may need to be
made (see above). Always set the wheels at the same position to ensure each job cuts the
same depth.

11
MAINTENANCE
When doing any type of maintenance on this machine, always follow the safety steps
described in this manual. Use only authorised genuine parts for replacement.
The cultivator must be adequately supported under its body (Make certain it cannot fall).
Bolts, Nuts and Bronze Bushes
Keep all bolts tight, in particular gang bolts. All bronze bushes should be checked each season
as they are a wearing part and may need replacing.
Gang Bolts
Don’t forget to keep the gang bolts tight with regular checks, particularly when the machine is
new (when the machine is new friction will cause the disc and spacers to wear in). The gang
bolt is vulnerable to damage or breakage if not in tension and damage caused because of
loose gang bolts would void warranty.
Cast Axle Bearings
Don’t lubricate cast axle bearing blocks (this will cause a type of graphite “abrasive paste”
which will cause expensive wear to the high tensile axle.
NOTE: Bearing blocks (Pt 3376) are in matching halves and can be turned over or replaced if
wear occurs.
Lubrication
Lubrication plays a very important part in extending the life of wearing parts.
1) Threaded rod - should be kept covered with a smear of grease to keep nuts and thread
corrosion FREE.
2) Wheel hubs - are pre-packed with grease and should only need attention at the end of
each season, unless dusty conditions cause seals to break down. Force wheel bearing
grease between rollers cone and cage, using hand method or grease packing
equipment. Add grease in wheel hub between hub between caps and fill hub cap.
Wheel Bearing Adjustment
Tighten adjusting nut while rotating or oscillating wheel until the wheel binds slightly. Back off
castellated type nuts between 1/6 to ¼ turn. Wheel should now turn freely, having between
.001” and .010” end play. Lock with split pin securely at this position.
Disc Bearings
These are a flanged greaseable bearing and should be kept adequately lubricated. The seal
inside is designed to allow purging of the grease as long as a normal steady force with a hand
pump gun is applied. A general guideline is every 8-10 hours, perhaps at the end of the days
work. Two to three pumps should be sufficient to prevent moisture ingress and therefore
possible corrosion . Ensure that foreign objects are not allowed to wrap around the bearings. If
they are not removed they may work their way into the bearing and cause failure.
Wheel kit
Check tyre pressure is between 45 and 60 psi. Wheel must run freely on axle and yoke must
be lubricated.
Note: Bearings are replaceable if necessary.

12
SPARE PARTS
ORDER SPARE PARTS THROUGH YOUR ORIGINAL SUPPLIER OR YOUR LOCAL
JOHN BERENDS IMPLEMENTS DEALER.
Always quote the machine serial number or product number, spare part number and its
part name as stated in the operator’s manual.
Glossary of terms
c/w = Complete with
sw = Spring Washer
n.s.s. = Not serviced separately
a.r. = As required
fw = Flat Washer
RM 80 Top Frame
Key No Part No Quantity Description
1 1564 1 Main Frame
2 3375 8 ‘U’ bolt for gangs c/w nut/sw
3 3381 8 RM.19 Plate suit ‘U’ bolt
4 1559 1 Front cross bar
5 3387 2 Bush
3386 4 Square washer
1879 2 Bolt/nut/sw
6 1558 1 Drawbar (no plates/bolts)
7 1557 2 Draw bar plates
8 1879 7 Bolt/nut/sw
9 3398 2 Drawbar tongue bolt/nut/sw
10 3397 1 Drawbar tongue
11 1556 1 Pressure screw bar (pipe end)
12 1640 2 Spring
13 1555 1 Pressure screw bar (threaded rod)
14 3346 1 Plain washer
15 3345 2 Locknut
16 3361 1 Pin for pressure screw bar
17 1940 1 Linch pin
18 3399 1 Jack
19 3390 1 Clamp for spring
20 3389 1 C.9 Spring
21 3392 1 Retaining bolt suit spring
22 1577 1 Hydraulic cylinder (inc. clevis pins)
23 1578 1 pair Hydraulic hoses & fittings suit RM80

13
RM 80 Top Frame
1 2
3 4 5
6
7
11 13 12
10
9
8
14 & 1516 & 17 19
20
21
18
22 & 23

14
1
2 & 3
4
5
6
7 8
10
11
12
13
14
7
15
11
17
16
RM 80 Gang Assembly
Key No Part No Quantity Description
1 1581 Gang Frame
2 3332 ar C.163 – 3 disc gang bolt axle
3333 ar C.164 – 4 disc gang bolt axle
3334 ar C.165 – 5 disc gang bolt axle
3 3345 1 per axle Half lock nut (hexagon)
1593 1 per axle Full nut (hexagon)
4 0576 ar P.594 Head washer
5 1955 ar Bolt/nut/sw suit scraper clamp
6 3340 ar Bolt/nut/sw suit hanger bracket
7 1591 ar Scraper - state length
8 3341 ar Scraper clamp
9 0568 ar P.592 Disc spacer spool
10 ar Disc - refer disc list
11 0572 ar P.591 Bearing spacer spool
12 3342 ar Hanger bracket
13 3343 ar Bearing bolt/nut/sw
14 0585 ar Flanged disc bearing complete
15 0570 ar P.590 Bearing spacer spool
16 0574 ar P.593 End washer (nut end)
17 3346 1 per axle Plain washer
9

15
1
2
18
17
RM 80 Wheel Assembly
Key No Part No Quantity Description
1 3360 1 Transport bar
2 3361 2 Pin suit transport bar
1940 2 Linch pin
3 3362 2 Seal suit FAD hub
4 3363 2 Inner bearing & cup suit FAD hub
5 3365 2 Hub, FAD
6 3364 12 Stud suit FAD hub
7 3366 2 Outer bearing & cup suit FAD hub
8 3367 2 Flat washer
9 3369 2 Castellated nut
10 3368 2 Split pin
11 3370 2 Hub cap
13 3371 2 6 stud rim
14 3372 2 Tube
15 3373 2 Tyre
16 3374 12 Wheel nut
17 3375 4 ‘U’ Bolt
18 3376 4 P.552 Wheel blocks
19 1569 1 Main axle
20 3377 1 Bronze bush
20
19
16
13, 14 & 15

16
A
E
G
F
685mm
Model A B C D E F G H
20 PLATE 115mm 610mm 305mm 420mm 535mm 180mm 330mm 380mm
24 PLATE 350mm 845mm 540mm 655mm 770mm 415mm 565mm 615mm
28 PLATE 585mm 1080mm 775mm 890mm 1005mm 650mm 800mm 850mm
32 PLATE 820mm 1315mm 1010mm 1125mm 1240mm 885mm 1035mm 1085mm
C
B
D
H
570mm
200mm
370mm
280mm