Page 1
44-100 Gliwice ul. Toruńska 14 e-mail mandam@mandam.com.pl Phone: 032 232 26 60 Fax: 032 232 58 85 TIN: 648 000 16 74 REGON (statistical No.): P – 008173131 OPERATION MANUAL DISC HARROW GAL-K XL 5.0 m, 6.0 m, 7.5 m Revision II Gliwice 2025...
Page 2
Operation manual GAL-K XL EC DECLARATION OF CONFORMITY FOR THE MACHINE Pursuant to the Ordinance of the Minister of Economy of 21 October 2008 (Journal of Laws No. 199, item 1228) and the Directive of the European Union 2006/42/EC of 17 May 2006 MANDAM Sp.
Machine identification The identification data of the GAL-K XL disc harrow can be found on a rating plate on the drawbar. The rating plate contains basic information about the manufacturer and the machine, as well as the CE mark.
➢ Information on spare parts can be found: www.parts.mandam.com.pl +48 668 662 289 parts@mandam.com.pl authorised distributors of machines from Mandam Sp. z o. o. ● 1.1. Information and warning signs Remember! When using the disc harrow, special care should be taken in areas marked with special information and warning signs (yellow stickers).
Page 6
Operation manual GAL-K XL Safety signs Meaning of the safety sign Keep a safe distance from foldable and moving parts of the machine Do not reach into the crushing area if parts may move Pressurised liquid jet - bodily harm...
Page 7
Operation manual GAL-K XL Safety signs Meaning of the safety sign Contact information for the spare parts department Designation of hydraulic system couplings Note about riding ban on rollers Opening sequence of a machine equipped with a hydraulic wing lock...
The harrows produced are available in widths: 5.0m, 6.0m and 7.5m. Fig. 2. construction of the GAL-K XL disc harrow (1 - drawbar, 2 - centre frame, 3 - right frame, 4 - left frame, 5 - right hand bearing disc, 6 - left hand bearing disc, 7 - side screen, 8 - running gear, 9 - roller, 10 - lighting) 2.2 The purpose of the disc harrow GAL-K XL...
The GAL-K XL units are equipped with their own chassis with a braked axle, for which a pneumatic system is used. NOTE! MANDAM provides a 5-year guarantee on maintenance-free hubs...
Operation manual GAL-K XL • permissible axle loads and transport dimensions must not be exceeded, • use only original safety and split pins, • do not approach the disc harrow while it is being raised or lowered, • it is not permitted to stay between the tractor and the disc harrow when the engine is running, •...
Operation manual GAL-K XL weights. • In the resting position, the machine, when uncoupled from the tractor, should maintain a stable equilibrium. • The support foot should be rested on a stable surface. It is forbidden to use foot pads that may cause instability of the support.
Operation manual GAL-K XL 3.5 Compliance with standards Our unit has been designed and manufactured in accordance with the safety standards of the engineering industry in force on the day the unit was launched. In particular, the following legislation and standards have been taken into account: •...
3.7 Description of residual risk MANDAM Sp. z o.o. makes every effort to eliminate the risk of accidents. There is a residual risk that could result in an unfortunate accident. The greatest danger occurs when: •...
Page 15
Operation manual GAL-K XL if damaged, e.g. pressure lines), • make sure that the machine's pressure hose couplings fit into the sockets on the tractor, • check the tightness of the individual bolts and nuts, • check the air pressure in the wheels in accordance with the manufacturer's recommendations, •...
Operation manual GAL-K XL – distance of the centre of gravity from the rear axle (if the manufacturer does not specify this parameter, enter 0.45). 4.1 Preparing the disc harrow The disc harrow is usually supplied ready for sale. Due to the limitations of transport facilities, it is also possible to deliver it in a partially dismantled state - this usually involves disconnecting the roller.
Operation manual GAL-K XL 4.2 Coupling the harrow to the tractor The tractor wheel tyre pressure should be in accordance with the manufacturer's recommendations. The lower links of the three-point hitch should be at an equal height, at a spacing corresponding to the spacing of the lower suspension points. When connecting the disc harrow to the tractor, the harrow should stand on firm and level ground.
Operation manual GAL-K XL 4.3 Mounting the seeder on the disc harrow using the APV PS as an example Mounting the seeder on the mounting plate Spreader plates with hose connection (shown in green) Hexagonal rod holder and attachment Figure 7 On the left it shows the installation of the seeder on the mounting plate, on the right the hose...
Operation manual GAL-K XL To fix (fig. 7) the APV PS seeder, it is necessary to: 1) Fix the APV seeder mounting plate (fig. 7 item 3) to the machine by screwing it to the harrow structure with screws (fig. 7 item 2), 2) Position the seeder (fig.
Operation manual GAL-K XL 4.4 Operation and adjustment 4.4.1 Automatic machine wing lock On machines with folding sections, an automatic wing lock is fitted that requires no additional operation. The lock uses a mechanism consisting of an actuator and a hook (Figure 9).
Page 21
Operation manual GAL-K XL Figure 10 Machine opening sequence: 1- lift the machine up to its maximum, 2- fold the machine wings into the "closed" position. 3. Then, having made sure that the hook of the hydraulic wing lock mechanism will allow the machine's wings to be unlocked, you can proceed to open them fully (fig.
Page 22
Operation manual GAL-K XL 4. When opening the machine's wing arms, ensure that the ends of the arms are at the correct height, preventing them from snagging on the ground (fig. 12). Figure 12 Machine opening sequence: opening the machine with special attention to the height of the arm ends from the ground.
Operation manual GAL-K XL 4.4.3 Side frame levelling Side frame levelling: If you notice an abnormality in the machine's level, screw or unscrew the end of the actuator. Firstly, the lock nut is loosened with a size "50" spanner and then the actuator end is adjusted with a size "41"...
Operation manual GAL-K XL Figure 14 View of the actuators with nut for levelling the side frames (1 - lock nut; 2 - adjustment spot with spanner 41) 4.4.4 Levelling the roller frame Figure 15 View of the roller frame actuator with nut for levelling the machine (1 - lock nut; 2 -...
"dropping" the tip should be screwed, while if the roller frame is facing "up" the actuator tip should be unscrewed. (Fig. 15) 4.4.5 Disc harrow working depth GAL-K XL The working depth is determined by the position of the roller, whose arms are adjustable by actuators.
Page 27
On the GAL-K XL disc harrow, the position of the individual working units must be preset before starting work in the field. It is also necessary to level the machine longitudinally with the tractor's top link or drawbar turnbuckle and transversely with the right lower link hanger.
Operation manual GAL-K XL 4.4.6 Setting up work units Setting up the machine correctly for operation Position the machine parallel to the ground (see fig. 19). The front drawbar must be aligned horizontally. It is forbidden to operate the machine with the drawbar at an...
Operation manual GAL-K XL 5 Braking system 5.1 Hydraulic double-circuit brake Side view Front view Figure 21 Hydraulic double circuit brake scheme (A - mounted on trolley) Diagram of the dual-circuit hydraulic brake with the most important operating elements of the GAL-K...
Page 30
Operation manual GAL-K XL Figure 22 Overview view of the two-line hydraulic brake system. Figure 23 Valve with marked components. Figures 23 and 24 show the respective valve plans with the designations of the most important wires and connectors, where they denote in sequence: •...
Page 31
Operation manual GAL-K XL Figure 24 Plan showing the connectors on the tractor side. • CT – output port (of brake actuators or load sensing valve, if fitted), • ST – output port (spring brake sections of the combined SAHR actuators - SL port), •...
Page 32
Operation manual GAL-K XL Figure 26 Marking where the metal cable is connected to its dedicated housing. If the braking system contains an automatic load detection valve of type 206104/xx, connect the SL-A port of the automatic brake valve to the SL port of the load detection valve.
Page 33
Operation manual GAL-K XL line connector, starts the tractor engine and releases the parking brake. The device provides all standard trailer braking functions when the driver brakes. If the trailer is disconnected from the tractor, the automatic brake valve activates the automatic emergency braking function.
Page 34
Operation manual GAL-K XL Figure 29 Port of artificial connection of the remaining coupling connectors. Mode 3 - Deactivation of automatic brake function: To deactivate the automatic brake function (if towing a trailer by a non-two-wheel tractor or other type of vehicle):...
Page 35
Operation manual GAL-K XL • Press the activation slider (as in the image on the right) until it is fully extended. The signalling device will move downwards generating a switch on manual mode operation; • Pump oil from the reservoir into the spring brakes using a hand pump.
Page 36
Operation manual GAL-K XL Figure 31 Activation slider positions in manual operation and standard driving position. Two alternative procedures are allowed for filling the installation's oil tank after installation. To do that: • Unscrew the oil plug from the top and fill the tank with the correct amount of oil*;...
Operation manual GAL-K XL Check the oil level in the tank regularly: the level must always be between the „max” and „min” positions on the oil level indicator. If the oil level is below the minimum, follow one of the previously described procedures to refill the tank.
Page 38
Operation manual GAL-K XL Figure 33 Machine chassis with valve block installed (1 - valve block with electric control, 2 - control panel with joystick, 3 - supply output of valve block, 4 - supply output of machine wing folding/unfolding hydraulics)
Page 39
Operation manual GAL-K XL Figure 34 Flow regulator (1 - flow regulator, 2 - supply connection P, 3 - connection to valve block A, 4 - return line, 5 - output to tractor; A - flow control knob) Figure 35 Valve block - side view (1 - electrically operated directional control valves)
Page 40
Operation manual GAL-K XL Figure 36 Valve block - side view (1 - A inlet connections, 2 - B outlet connections) Figure 37 Connection of flow regulator to valve block (1 - supply line, 2 - return line)
Page 41
Operation manual GAL-K XL Table 2 Technical data of the flow controller Technical data of the flow controller Fluid viscosity ISO 3448 Filtration ISO 4406, 25 μm Maximum flow at port P 120 L/min Maximum flow at port A 70 L/min...
Page 42
Operation manual GAL-K XL Figure 38 shows a diagram of the machine's hydraulics using a valve block with electric control. Figure 38 Diagram of the machine's hydraulic system with valve block fitted.
8 Construction and operation of the vibration compensation system of the chassis suspension system (option) On the GAL-K XL disc harrows, a vibration compensation system can be fitted as an option. The vibration compensation system consists of: double-acting actuator, hydro- pneumatic accumulator, pressure gauge, shut-off valve, hose assembly and fittings.
Operation manual GAL-K XL Figure 42 Hydraulic diagram of the vibration compensation system. 8.2 Operation of the vibration compensation system The vibration compensation system is switched on and off using a ball valve (No. 3, Figure 41). When transporting over large unevenness, the hydraulic system should be open - ball valve open (position of lever parallel to oil flow direction).
Operation manual GAL-K XL conditions of the machine. The amount of pressure in the system will vary depending on the type of machine and actuator. • If the factory settings prevent adequate stroke, the gas pressure in the hydro- pneumatic accumulator should be reduced. To do this, unscrew the nut on the back of the accumulator (Fig.
Operation manual GAL-K XL • Once the machine has been unfolded and lowered into the working position (trolley raised as far as possible), the machine must be levelled on the actuator and the tractor's suspension system. • Then adjust the pressure in the shock absorber system to 90bar.
Page 48
Operation manual GAL-K XL Figure 45 The lighting array assembly and its location. NOTE! If the tractor's lighting is obscured by a suspended machine, such lighting should be duplicated on the machine (using dedicated lighting boards) to improve the team's visibility on the road.
Operation manual GAL-K XL own skills and the intensity of the movement, the prevailing visibility and the weather. NOTE! Lighting and warning devices are not part of the equipment of the cultivation roller. The user can purchase them at agricultural machinery dealers.
Page 50
Operation manual GAL-K XL Figure 46 Lubrication points on the GAL-K XL (option with c-ring tandem roller and drawbar suspension)
Operation manual GAL-K XL NOTE! Periodic lubrication is a guarantee of the durability of the machine. The service life and efficiency of the machine depend to a large extent on regular lubrication. Mineral lubricants should be used for lubrication. Lubrication points must be thoroughly cleaned before pressing in or applying grease.
However, if this is not possible, the condition of the protection should be checked from time to time and, if necessary, the rain-washed grease should be replenished. 12.1 Operating the running gear of the GAL-K XL disc harrow Regular control of wheel pressure.
Page 53
Operation manual GAL-K XL • Tightening is complete when no more than half a turn of the hub is caused by vigorous hand rotation. • Partially loosen the nut until the hub rotates freely and repeat the tightening. • After repeated rotation locking, loosen the nut by 30º max. until the immediate nut locking with the pin is possible.
Page 54
Operation manual GAL-K XL Braking adjustment – braking deceleration levelling, should be carried out when: • As the lining jaws wear during use and as a result of the resulting clearance, the braking force decreases, • the wheel brakes brake unevenly and inconsistently.
Operation manual GAL-K XL 12.2 Main machine dimensions Figure 48 Transport dimensions of the GAL-K XL disc harrow with single roller (D - width, L - length, H - height) (see table 4)
Operation manual GAL-K XL 12.3 Specifications Table 4 Technical characteristics of the GAL-K XL disc harrow Parameters Unit Machine type GAL-K 5,0 H XL GAL-K 6,0 H XL GAL-K 7,5 H XL Working width 5,00 6,00 7,50 Hydraulically foldable No. of discs pcs.
Page 57
Operation manual GAL-K XL in headless screws using adhesive to prevent loosening. Replacement of working components Excessively worn working element make it difficult for tools to penetrate and cause an increase in working resistance. The discs should be replaced when their diameter reduces to 490mm for Ø560mm discs and 550mm for Ø610mm discs.
Operation manual GAL-K XL Table 5. Causes and remedies for defects and malfunctions of the GAL-K XL disc harrow Fault, malfunction Reason Repair method - uneven penetration of working - poor levelling of the machine - level the machine longitudinally...
Operation manual GAL-K XL ➢ Once the machine is down, disconnect the suspension system and drive the tractor away. Also, components dismantled from the machine must be stored securely supported on the ground, excluding the possibility of uncontrolled movement. It is advisable to store the machine in a paved and covered area that is inaccessible to bystanders and animals.
Operation manual GAL-K XL 15 Spare parts for the disc harrow GAL-K XL ➢ To search for, price and order original spare parts for MANDAM Sp. z o.o. machin- ery, please visit our website at: www.mandam.com.pl, tab “parts”. ➢ On this page, we provide catalogues and spare parts sheets in PDF format, con- taining up-to-date parts diagrams for each machine, together with their numbers and prices.
Need help?
Do you have a question about the GAL-K XL and is the answer not in the manual?
Questions and answers