IBEX TS51C User manual

2020-05.2
Ibex TS51C Drum Mower Assembly and
Quick Start Guide

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Contents
Scope and Purpose .............................................................................................................................................. 4
Uncrating............................................................................................................................................................. 4
Guard Installation................................................................................................................................................ 6
Three Point Hitch................................................................................................................................................ 7
Blade Installation ................................................................................................................................................ 8
Attaching the Drum Unit to the Three Point Hitch............................................................................................. 9
Attaching the Drum Unit .................................................................................................................................. 12
Transport Lock.................................................................................................................................................. 13
PTO Drivelines ................................................................................................................................................. 14
Pivot Restrictor ................................................................................................................................................. 15
Guard Installation.............................................................................................................................................. 15
Lubrication........................................................................................................................................................ 17
PTO Safety Warnings ....................................................................................................................................... 18
Cutting the PTO Shaft to Fit the Tractor .......................................................................................................... 18
Installing the PTO Shaft.................................................................................................................................... 22
Figure 1 lifting the drum assembly ......................................................................................................................... 4
Figure 2 parts ready to assemble............................................................................................................................. 4
Figure 3 bag of hardware. ....................................................................................................................................... 5
Figure 4 hardware sorted out. ................................................................................................................................. 5
Figure 5 the large guard installs on the gearbox facing the tractor......................................................................... 6
Figure 6 the guard with the notched out area is installed on the drum unit as shown (cutout may look different
on your machine) .................................................................................................................................................... 6
Figure 7 the third guard is installed on the remaining location on the 90 degree gearbox..................................... 6
Figure 8 install the pins in the arms as shown on both sides .................................................................................. 7
Figure 9 attached to lift arms .................................................................................................................................. 7
Figure 10 level the 3 point hitch unit with the top link........................................................................................... 8
Figure 11 blade tool ................................................................................................................................................ 8
Figure 12 installing a blade..................................................................................................................................... 8
Figure 13 move the drum unit over to the three point hitch assembly like this...................................................... 9
Figure 14 swivel tee assembly ................................................................................................................................ 9
Figure 15 the cap and hardware are shown here for the swivel tee ........................................................................ 9
Figure 16 swivel tee in place for next step ........................................................................................................... 10
Figure 17 short swivel pin..................................................................................................................................... 10
Figure 18 align holes in arm to swivel tee ............................................................................................................ 10
Figure 19 holes aligned to allow pin to pass......................................................................................................... 11
Figure 20 pin through and nut started................................................................................................................... 11
Figure 21 top spring arm installed with pin blocked up by using a 2x4............................................................... 11
Figure 22 hardware to attach spring arm to lower arm......................................................................................... 12

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Figure 23 top spring arm attachment to lower arm............................................................................................... 12
Figure 24 push the lower arm down to line up with drum unit............................................................................. 12
Figure 25 holes are close to being aligned............................................................................................................ 13
Figure 26 nut and washer installed on pivot pin................................................................................................... 13
Figure 27 transport lock and rubber grip installation............................................................................................ 13
Figure 28 connect the driveline with one-way clutch........................................................................................... 14
Figure 29 guard chains attached ........................................................................................................................... 14
Figure 30 shaft with slip clutch end...................................................................................................................... 14
Figure 31 restrictor plate with hardware............................................................................................................... 15
Figure 32 plate shown installed from side ............................................................................................................ 15
Figure 33 front guard has 6 holes ......................................................................................................................... 16
Figure 34 eight sets of fasteners used for attaching guard frame ......................................................................... 16
Figure 35 curtain installed with 2 holes for toe guard facing forward.................................................................. 16
Figure 36 curtain straps secure to the guard frame ............................................................................................... 17
Figure 37 correct oil level in drum gearbox.......................................................................................................... 17
Figure 38 PTOs installed to mark overlap ............................................................................................................ 18
Figure 39 mark overlap length.............................................................................................................................. 19
Figure 40 cut off length marked............................................................................................................................ 19
Figure 41 plastic tube cut...................................................................................................................................... 19
Figure 42 align end of tube to end of shaft ........................................................................................................... 20
Figure 43 use tube to mark the cut length to steel shaft........................................................................................ 20
Figure 44 shaft is marked to cut off same length as plastic tube .......................................................................... 20
Figure 45 clamp on the part of the shaft that is being cut off, then cut ................................................................ 20
Figure 46 burrs and shavings must be removed.................................................................................................... 21
Figure 47 burrs removed with a file, grinder and power wire wheel.................................................................... 21
Figure 48 spread grease inside outer shaft............................................................................................................ 21

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Scope and Purpose
This guide is limited to Ibex TS51C drum mowers (also labeled as Galfre FR/G 130). The guide covers models
manufactured in 2020 and forward.
This manual is a guide to aid in the assembly and start-up basics only. Consult the operations manual for
instructions on usage and safety.
Uncrating
Heavier components can be lifted out of the crate, using lift straps or chains, if a lift is available.
Figure 1 lifting the drum assembly
If no lift is available, the crate will need to be cut open for easier access. Remove the smaller parts, then slide
the drum unit out of the crate onto the ground. The drum mower bottom skids drag across the ground during
use, so it is alright to drag them to the location that you plan to use for assembly.
Lay out the parts so you can see everything in one place.
Figure 2 parts ready to assemble.

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Take the bag of parts and sort them out in like groupings. It makes finding the hardware much easier during
assembly.
Figure 3 bag of hardware.
Figure 4 hardware sorted out.
Grease the PTO drivelines before assembly. Also grease the plastic fittings on the free rotating plastic guards.
It’s much easier to do before assembly. Consult the driveline manuals that are attached to the PTO drivelines for
instructions on lubrication. Keep the driveline manuals for future reference.

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Guard Installation
The plastic guards for the drivelines are easier to install before assembling the mower.
Figure 5 the large guard installs on the gearbox facing the tractor
Figure 6 the guard with the notched out area is installed on the drum unit as shown (cutout may look different on your machine)
Figure 7 the third guard is installed on the remaining location on the 90 degree gearbox

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Three Point Hitch
The 2 lift pins must be secured to the 3 point hitch. Position the three point hitch so the two arms face up. Find
the two lift pins and the 2 smaller roll pins (spring pins) shown below. Oil the holes in the pins and the hitch
then oil the roll pin. Secure the roll pin with locking pliers and drive through the holes with a hammer. The pins
can be installed in a different configuration than shown, for example if the width of your tractor’s lift arms is
narrow, you may want to install the pins facing inward.
Figure 8 install the pins in the arms as shown on both sides
Move the 3 point hitch assembly over to the back of your tractor. Attach to the tractor lift arms and install the
lynch pins.
Figure 9 attached to lift arms
Lift the 3 point hitch unit up and install the top link pin. Adjust the length of the top link to make the 3 point
hitch close to straight up and down.

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Figure 10 level the 3 point hitch unit with the top link
Blade Installation
The 6 cutting blades that come with the mower are installed and changed with the blade tool. The blade tool is
stored on the top of the spring arm that connects the 3 point hitch to the drum unit, shown here fully assembled.
Figure 11 blade tool
Find the 6 blades and separate them. Install them with the beveled edges face up. Using the blade tool, pry open
the drums and install the blade by fitting the hole of the blade over the pin inside. For safety purposes, never
place your hand or fingers inside the opened space between the discs. Position the tool, raise the arm, install the
blade, and let the tool arm down. Be sure the blade is on the pin and swings freely.
Figure 12 installing a blade

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Attaching the Drum Unit to the Three Point Hitch
Place the drum unit so that it is oriented as shown in Figure 13. Be sure the PTO spline shafts face each other.
Figure 13 move the drum unit over to the three point hitch assembly like this
You will use the swivel tee subassembly shown below to connect two lift arms to the three point hitch
assembly.
Figure 14 swivel tee assembly
Figure 15 the cap and hardware are shown here for the swivel tee
Put the swivel tee through the hole, without the cap, so that the cap goes on top. Install the nut & bolt only until
you feel some resistance – don’t tighten all the way as the bolt will need to come back out to mount the top arm
later. You will need either an adjustable wrench or a 30mm socket to secure the nut.

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Next get the shorter of the two swivel pins as seen in Figure 17. It usually has the washer and nut attached.
Figure 17 short swivel pin
Align the two holes on the support arm so that they centered to the bushing. The pin will not go through and the
plastic bushings could be damaged if the holes are not well aligned first. You can use an adjustable height stand
such as a chair to hold up the arm while aligning the holes. Take note of the orientation of features so that it is
installed right side up.
Figure 18 align holes in arm to swivel tee
Figure 16 swivel tee in place for next step

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Adjust the centers of the holes to be concentric and well-aligned before attempting to push the pin through.
Figure 19 holes aligned to allow pin to pass
Drive the pin through. Fit the washer and the nut. The nut takes a 30mm wrench. Do not over tighten, just snug.
Use a screwdriver, or something that will fit through the hole in the round head to keep the pin from turning.
Figure 20 pin through and nut started
The top spring arm will fit onto the top cap as shown. Again, do not over-tighten as it needs to be able to pivot.
Before removing the bolt from the top cap, raise the three point hitch on the tractor and cut a 2 foot length of
2x4 to support the lower arm. Let the three point hitch down so it is resting on the 2x4. This way the pin will not
fall out of the hole when the hardware is removed on the top.
Figure 21 top spring arm installed with pin blocked up by using a 2x4

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Next, get the hardware to secure the spring arm to the lower lift arm as shown in Figure 22.
Figure 22 hardware to attach spring arm to lower arm
Connect the lower arm to the top arm as shown in Figure 23. Be sure the bolt goes through the loop on the
spring inside the top arm. The lower arm will need to be raised up at an angle to line everything up.
Figure 23 top spring arm attachment to lower arm
Attaching the Drum Unit
Position the drum unit so that the center pivot holes line up when the arm assembly is pushed down. If you are
working by yourself, using a ratchet strap to pull down the spring loaded arm will make this operation easier.
Figure 24 push the lower arm down to line up with drum unit
The centers must be lined up before driving the pin through the hole. Use a long screwdriver, long punch, or
something similar to line up the holes. Do not force the pin through, as you can damage the plastic bushings. A
little oil on the pin can help. Use the top link to adjust the angle and adjust the three point height on the tractor
to put in best position. Use patience as the pin will not go through easily until it is lined up well. Try nudging
the drum unit to get all holes aligned at the same time.

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Figure 25 holes are close to being aligned
Put the washer and nut on the pivot pin, but do not over-tighten.
Figure 26 nut and washer installed on pivot pin
Transport Lock
Install the transport lock for the spring arm as shown. Use a mallet to drive the rubber grip over the pin as
shown. There are 2 rubber grips, use the smaller of the two.
Figure 27 transport lock and rubber grip installation

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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PTO Drivelines
The PTO driveline with the one-way clutch shown in the picture below is installed between the 3 point hitch
and the drum unit. Install the wider clutch end so that it is attached to drum unit.
Figure 28 connect the driveline with one-way clutch
Attach the guard chains so that the guards do not spin for your safety.
Figure 29 guard chains attached
The driveline with the slip clutch is attached between the 90 degree gearbox and the tractor. The slip clutch (the
wider end with the springs) attaches to the mower, while the other end attaches to the tractor.
Figure 30 shaft with slip clutch end

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Pivot Restrictor
The drum unit pivots to adjust to the terrain while cutting. The pivot restrictor keeps the mower from pivoting
too far and also secures it while in transport mode. Gather the parts shown in Figure 31 with two 19 mm
wrenches. Take care to face the head of the bolt out as the clearance with the handle is tight. Only 3 of the 4
washers are used.
Figure 31 restrictor plate with hardware
Figure 32 plate shown installed from side
Assemble as shown in Figure 32. The clamp handle should be tightened during transport to keep the drums
from pivoting down and possibly dragging. During mowing, the handle is loosened so that the mower pivots
freely within the range allowed by the slot in the restrictor plate.
Guard Installation
The front guard frame has 6 holes and a pin that slides into the tubing of the rear frame as shown.

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Figure 33 front guard has 6 holes
The 8 sets of hardware shown in Figure 34 are used to fasten the guard frames. Align the pin in the front frame
to the hole in the rear frame, then bolt on. Do not install the bumper guard yet (the double-T shaped frame seen
in Figure 35), as the curtain must be fitted first. You will need 2 wrenches that are 17mm for these nuts and cap
screws.
Figure 34 eight sets of fasteners used for attaching guard frame
Install the curtain with the 2 cutout holes facing forward, as the bumper guard goes through these holes.
Figure 35 curtain installed with 2 holes for toe guard facing forward
Secure the bumper guard with the remaining screws. Secure the curtain with the included straps.

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Figure 36 curtain straps secure to the guard frame
Lubrication
The correct oil for both the 90 degree gearbox and the drum unit reservoir is a gear oil near 90 weight (80W90
is commonly found in stores) that is rated for EP, or extreme pressure.
The 90 degree gearbox is filled to the bottom of the fill hole/fill level hole on the side.
The gearbox over the drums contains about 3 liters of oil. The oil is not easily visible, so use a straw or the like
to check the level. About 1-3/4 to 2 inches of oil is the correct level.
Do not overfill the gearboxes. Having the gearboxes too full of oil will cause overheating, foaming and
premature failure of the lubricating oil. If you are uncertain how to properly fill the gearbox with oil, please
contact your dealer for advice.
Verify that there is oil in the 2 gearboxes and lubricate all grease points. Some of the grease points will take
more grease than usual the first time they are lubricated due to filling up the air space between the bushings.
Figure 37 correct oil level in drum gearbox

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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PTO Safety Warnings
Read the manuals that are supplied with your PTO’s before operating the machinery. Failure to follow all safety
procedures in the manufacturer’s literature could lead to equipment damage, personal injury or death.
The primary PTO shaft is supplied long because the length of the draw arms on tractors vary. It is
typical to have to remove excess length from the PTO before using the implement with your tractor. If
you have more than one tractor, it is important to cut the shaft for the tractor you will be using the
implement with. Mark the PTO with permanent marker as to which tractor it is to be used with to avoid
confusion that could lead to damage. Using a PTO shaft that is too short can cause the PTO to separate
during use that could lead to damage of personal injury.
The PTO shaft must never completely collapse in use, because to do so would put the weight of the
implement attached to the tractor pushing against the PTO’s of the tractor and implement. The output
bearings are not designed for thrust forces pushing the PTO forward into the gearbox, and could cause
severe damage. This could be an expensive repair on the tractor if the PTO bearings or gearing were
damaged due to an improperly fitted PTO shaft. If you have to lift the implement to attach the PTO, then
the PTO shaft is too long and must be cut.
The PTO shaft going to the tractor should have 2 inches of space to retract when the distance between the
splines on the tractor and implement are at minimum. If this is not the case, the PTO must be cut to
avoid damaging the tractor or the PTO shaft. If you need to cut the PTO shaft, see the instructions that
came with the shaft.
Cutting the PTO Shaft to Fit the Tractor
The PTO shaft that attaches to your tractor may be too long to fit and will have to be shortened. The process
discussed here will be different for different models of tractor, so do not use these measurements as they may
not work for another make and model tractor.
First, have the implement attached to the tractor so that it is adjusted as it will be used, and that the PTO splines
on the tractor and the implement are at the same height so the distance between them is at the minimum
condition. Attach both ends of the PTO to the tractor and to the implement with the PTO split apart in two
pieces. The PTO guard on the gearbox is removed for better visibility. Orient the shafts so that they pass by
one-another as parallel as possible.
Figure 38 PTOs installed to mark overlap
Using a straight edge, transfer a mark from the end of the tube section to the other section as shown here and in
the manual that comes with the PTO. This line represents how much the shafts are too long to fit together. The

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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manufacturer of the PTO shafts recommends adding an inch and a half to the amount to cut off the plastic tube
and the steel telescoping tube of each half of the PTO.
Figure 39 mark overlap length
The overlap length is 150mm for our tractor. Add an inch and a half (40mm) to that for our cutoff length. The
amount to cut off is 190mm. That will be 19 cm on a typical ruler. These measurements are metric because the
instructions given by the manufacturer of the PTO are in metric.
Figure 40 cut off length marked
Cut the measured length of plastic tube, leaving the steel shaft inside not cut.
Figure 41 plastic tube cut
Use the cut length of plastic tube to mark the remaining 3 cuts. Align the end of the tube with the end of the
shaft as shown in Figure 42.

Ibex TS51C Drum Mower Assembly Guide Copyright 2020 Ibex Equipment Co.
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Figure 42 align end of tube to end of shaft
Use the other end of the tube to mark the cut length on the steel shaft.
Figure 43 use tube to mark the cut length to steel shaft
Now the shaft is marked to cut the same length as the plastic tube.
Figure 44 shaft is marked to cut off same length as plastic tube
Cut the shaft using a metal cutting blade such as a hack saw, band saw, or similar. When cutting the steel shaft,
clamp it in a vise using the discard end to clamp on. Be sure to wear eye protection.
Figure 45 clamp on the part of the shaft that is being cut off, then cut