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SPIERINGS AT7 Manual

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MANUAL SPIERINGS TRUCK AT7
Introduction
Dear User,
This manual provides the user of the Spierings folding crane with information concerning the crane's construction,
function and operation. Also detailed, technical descriptions and maintenance instructions are given in the
maintenance section of this manual.
© Copyright Spierings Kranen.
All rights reserved.
No part of this publication may be reproduced or published, in any form or in any way, by print, photo print, microfilm or any other means without prior written permission
from the manufacturer.
I
AT7-EN-070103 aangepast 26-7-2018.docx

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Summary of Contents for SPIERINGS AT7

  • Page 1 MANUAL SPIERINGS TRUCK AT7 Introduction Dear User, This manual provides the user of the Spierings folding crane with information concerning the crane's construction, function and operation. Also detailed, technical descriptions and maintenance instructions are given in the maintenance section of this manual.

  • Page 2: Liability Clause

    2.2. If at any work site of the Spierings truck/crane the safety rules and regulations are more strict than those laid down in the manual, or possible additions thereto, these stricter rules are to be complied with under penalty of expiry of the guarantee and with exclusion of every liability.

  • Page 3: Explanation Of The Symbols Used

    MANUAL SPIERINGS TRUCK AT7 Explanation of the Symbols Used CAUTION! Wear safety goggles! Wear gloves! Wear safety shoes! Wear a helmet! Put on safety belt! Check / test! Manual action! Automatic action! Incorrect! Good ! Information! AT7-EN-070103 aangepast 26-7-2018.docx...

  • Page 4: Table Of Contents

    Battery Charger Remote Control Batteries ..............2-6 2.2.12. Fire Extinguisher ..................... 2-6 2.3. Control Panel ......................... 2-7 2.4. Operating the Air-conditioning ....................2-17 2.5. Driving the Spierings Crane ....................2-18 2.5.1. Starting ........................2-18 2.5.2. Driving off........................ 2-18 2.5.3. Reversing........................ 2-18 2.5.4.
  • Page 5 3.1.8. Fire Hazard ....................... 3-2 3.1.9. Cleaning Components ....................3-2 3.2. Maintenance Chart for the AT7 Truck ..................3-3 DIESEL ENGINE ..........................4-1 4.1. Service Inspections at Commencement of Operations ............. 4-2 4.2. Access to the diesel engine ....................4-2 4.3.
  • Page 6 MANUAL SPIERINGS TRUCK AT7 4.10. Poly V-Belts ......................... 4-15 4.10.1. Poly V-Belts Replacement ..................4-15 4.10.2. Poly V-Belt on the Cooler Pump ................4-15 4.10.3. Poly V-Belt Generator .................... 4-16 4.11. Exhaust system ........................4-16 DRIVE SYSTEM ..........................5-1 5.1.
  • Page 7 MANUAL SPIERINGS TRUCK AT7 8.5. Hoses and Couplings Hydraulic System .................. 8-4 8.6. Hydraulic Brake Power Axle 1 ....................8-5 8.6.1. Check Oil Level ......................8-5 8.6.2. Change Oil ........................ 8-5 PNEUMATIC SYSTEM ........................9-1 9.1. Primary System: Brake System ....................9-1 9.2.

  • Page 8: General Data At7

    1. General Data AT7 The AT7 carriage is especially designed for the Spierings SK2400 folding crane. Extra attention is paid to a safe and comfortable transport to the work site. The crane is suited for driving on public roads, fully equipped with counterweight and tools.
  • Page 9 MANUAL SPIERINGS TRUCK AT7 Steering: With regard to the steering, we distinguish between road and off the road steering. • Road steering: Axles 1 to 3 are mechanically steered by means of the steering wheel, axle 4 remains rigid and, depending on the driving speed, axle 5 steers along in opposite direction up to 30 km/h, axles 6 and 7 up to 50 km/h respectively.
  • Page 10 MANUAL SPIERINGS TRUCK AT7 Identification: • Engine number: on the valve cover or on the water pump. • Carriage frame number: on the identification shield in the co-driver's leg-room (see Picture 1-2) and stamped in the right frame girder in front of the first axle. (see Picture 1-3).

  • Page 11: Operation

    MANUAL SPIERINGS TRUCK AT7 2. Operation 2.1. Introduction to the Truck Picture 2-1 Bumper The bumper, equipped with lighting fixture, can be folded up to hitch on a trailer. Truck Cab In addition to driving the crane, the control panel in the truck cab can be used to operate the outrigger system and to adjust the axles' height.
  • Page 12 MANUAL SPIERINGS TRUCK AT7 Left-hand Engine Cowling At this side under the engine cowling, the following parts are found: Control box Grease container for automatic lubrication system Auxiliary steps Oil filling pipe Picture 2-3 Outriggers At both sides of the truck there are 2 extending outrigger beams (4), and to each beam a hydraulically operated outrigger (1).
  • Page 13 MANUAL SPIERINGS TRUCK AT7 Right-hand Engine Cowling At the right-hand side of the truck under the engine cowling, the following parts are found: Air cleaner Combined cooler (intercooler/radiator/oil cooler) with hydraulically driven fan. Soundproof side Picture 2-5 Fuel Tank The fuel tank is integrated in the frame at the rear of the truck. The tank capacity is 725 litres and can be filled through a filler neck at the rear, right-hand side of the truck.

  • Page 14: Truck Cab

    MANUAL SPIERINGS TRUCK AT7 Outrigger Plates Directly behind the truck cab 4 steel outrigger plates in all can be carried. They can be put in place by means of a hoisting arm mounted at the crane's outer tower. 2.2. Truck Cab 2.2.1.

  • Page 15: Sun Blind

    MANUAL SPIERINGS TRUCK AT7 2.2.7. Sun Blind To prevent sunlight from blinding you, a sun blind is mounted above the windscreen for the driver and the co- driver. Pull down the blind with the joggle in the middle of the blind. The blind will remain in the desired position.

  • Page 16: Battery Charger Remote Control Batteries

    MANUAL SPIERINGS TRUCK AT7 2.2.11. Battery Charger Remote Control Batteries The charging unit for the batteries of the remote controls is found at the left under the dashboard at driver's side. Picture 2-12 Every remote control comes with 2 batteries each.

  • Page 17: Control Panel

    MANUAL SPIERINGS TRUCK AT7 2.3. Control Panel Longitudinal differential lock Control lever direction indicator / windscreen wiper interval Transverse differential lock Steering wheel Transfer case high/low Control Lever Retarder/Cruise Control/Engine Speed Control (ESC) Switch alarm light Airport Lighting Aeronautic warning lamp...
  • Page 18 MANUAL SPIERINGS TRUCK AT7 Switch Longitudinal Differential Lock Switch on the longitudinal differential lock, when while driving off-road the vehicle has too little or no traction. The longitudinal differentials will be locked. Switch Transverse Differential Lock Switch on the transverse differential lock when while driving with longitudinal differential lock, the vehicle still has insufficient traction.
  • Page 19 MANUAL SPIERINGS TRUCK AT7 13. Switch All Axles up/down With this switch the cylinders of all axles are simultaneously retracted or extended (e.g. during outrigger operation) 14. Switch Axles 1 and 2 up/down With this switch the cylinders of axles 1 and 2 can be extended or retracted simultaneously.
  • Page 20 MANUAL SPIERINGS TRUCK AT7 20. Switch outrigger front left-hand side retract/extend 21. Switch outrigger beam rear left-hand side retract/extend 22. Switch outrigger rear left-hand side retract/extend 23. Switch outrigger front right-hand side retract/extend 24. Switch outrigger beam front right-hand side retract/extend 25.
  • Page 21 MANUAL SPIERINGS TRUCK AT7 26. Switch outrigger beam rear right-hand side retract/extend 27. Switch Outrigger Controls on/off Switch off the outrigger controls as soon as the outriggers are no longer operated. Do the same while the crane is being rigged up/down or during hoisting operations. The remote control is also de- activated.
  • Page 22 MANUAL SPIERINGS TRUCK AT7 29. Speedometer with milometer and trip recorder The truck has a standard speed limiter of 83 km/h. The total mileage and the trip recorder are shown in the display under the speedometer dial. It also shows the time, which may be adjusted through the digital tachograph.
  • Page 23 MANUAL SPIERINGS TRUCK AT7 Flashes: If the AdBlue-level is in reserve. Error message display When the yellow error message lamp E in Picture 2-15 is activated, the respective error message can be shown next to the symbol. Air pressure circuit 1 with air pressure indicator Active: After start up.
  • Page 24 MANUAL SPIERINGS TRUCK AT7 Hydraulic Oil Pressure Flashes + yellow When the hydraulic oil pressure exceeds 350 bar. lamp: Have the malfunction repaired as soon as possible. Hydraulic Oil Temperature Flashes + yellow When the hydraulic oil temperature exceeds 80°C.
  • Page 25 MANUAL SPIERINGS TRUCK AT7 35. Control lever direction indicator / windscreen wiper interval Picture 2-17 With this switch the driving direction is indicated. Pushing the switch forward switches on the full beam headlight. By pulling the switch backwards, you can give light signals.
  • Page 26 MANUAL SPIERINGS TRUCK AT7 With this control panel, various axle steering programs can be selected. (For explanation please refer to chapter 2.13) 48. Monitor Camera/Navigation System This screen shows the navigation system or the image from the reverse camera (see enclosed manual).

  • Page 27: Operating The Air-Conditioning

    MANUAL SPIERINGS TRUCK AT7 2.4. Operating the Air-conditioning The air-conditioning is situated at the truck cab ceiling. (see Picture 2-18). Picture 2-18 On the interior part of the air-conditioning are two rotary switches. Switch B (Picture 2-19) is the selector switch for air delivery of the interior fan.

  • Page 28: Driving The Spierings Crane

    (For all number references please see Picture 2-14) The truck driver must always comply with the local regulations for driving a Spierings crane. While driving and manoeuvring the crane, the driver must be aware of the crane's unusual form, measurements and steering characteristics.

  • Page 29: Stopping

    2.6. Gear Change The AT7 is fitted with an automatic transmission, so there is no clutch pedal in the truck cab. The controls needed to get the crane moving are control lever (65) and rotary switch (66) on the central console and the accelerator pedal.

  • Page 30: Manual Gear Change

    MANUAL SPIERINGS TRUCK AT7 Picture 2-21 2.7. Manual Gear Change In view of easy operation it is not wise to often use the manual gear change function. For manual gear change push the gear lever to the left. The two arrows and four bars on the display disappear. If the crane is not moving, the display only shows the number of the selected gear.

  • Page 31: Brake System

    2-digit code: In this case error code 74. 3-digit code: The four bars stand for a hundred. In this case error code 174. You can ask Spierings Kranen or ZF Friedrichshafen AG for the meaning of these error codes. 2.8. Brake System The crane is equipped with four brake systems: •...

  • Page 32: Braking With The Retarder

    MANUAL SPIERINGS TRUCK AT7 2.8.4. Braking with the Retarder For slowing down when driving at high speed or on long stretches down-hill, the use of the retarder is advisable. It reduces the wear on the operating brake. The retarder is activated with the control lever at the right of the steering column.

  • Page 33: Cruise Control (Cc)

    MANUAL SPIERINGS TRUCK AT7 By pushing the lever forwards (towards C) the Bremsomat is turned off. 2.9.3. Cruise Control (CC) The Cruise Control enables you to drive at a constant speed without having to operate the accelerator. The cruise control only works when the speed is over 30 km/h.

  • Page 34: Variable Speed Limiter

    MANUAL SPIERINGS TRUCK AT7 2.9.4. Variable Speed Limiter The variable speed limiter enables you to set a speed limit. It will only work if the actual speed is over 30 km/h. By turning the lever tip (1, Picture 2-22) briefly on “LIM”, the actual speed is set as speed limit. This value can be increased/decreased by moving the lever up/down (towards D).

  • Page 35: Driving Off The Road

    MANUAL SPIERINGS TRUCK AT7 2.10. Driving off the Road The truck driver must always comply with the same regulations as while driving a crane on public roads. 2.10.1. Off-the-Road Mode Transfer Case When driving off the road or when low speed is required (e.g. driving with erected tower) you can shift the transfer case to off-the-road mode (low, 3).

  • Page 36: Transverse Differential Lock

    MANUAL SPIERINGS TRUCK AT7 2.10.3. Transverse differential lock If after engaging the longitudinal differential lock there is still too little traction, also the differentials in the axles may be locked with switch "transverse differential lock" (2). To keep the transverse differential lock engaged, the button must be pressed.

  • Page 37: Off-The-Road Mode

    MANUAL SPIERINGS TRUCK AT7 2.12.2. Off-the-Road Mode In order to reach maximum ground clearance the crane can be put in off-the-road mode. Proceed as follows: • Turn on the axle height adjustment (18) • Extend all axle cylinders (13). (The cylinder will not extend fully, so there is some suspension travel left).

  • Page 38: Control Panel Axle Steering

    MANUAL SPIERINGS TRUCK AT7 2.13. Control Panel Axle Steering CAUTION! The crane must be in transport mode for all steering programs. So NEVER activate a steering program when driving with rigged up tower! It goes for all steering programs that the transverse differential lock should NEVER be...

  • Page 39: Small Turning Circle

    MANUAL SPIERINGS TRUCK AT7 2.13.1. Small Turning Circle This steering program enables an extra small turning circle. The maximum driving speed is limited to 20 km/h. Axles 1 to 3 are mechanically steered through the steering wheel, depending on the driving speed axles 4, 5, 6 and 7 steer along in opposite direction.

  • Page 40: Crab Steering

    MANUAL SPIERINGS TRUCK AT7 2.13.3. Crab Steering In case of crab steering all axles steer in the same direction, so you may drive to or from an object diagonally. The maximum driving speed is limited to 20 km/h. Axles 1 to 3 are steered mechanically with the steering wheel.
  • Page 41 MANUAL SPIERINGS TRUCK AT7 Remove the safety clips from the 2 pins in the box girders and pull out the 2 pins (Picture 2-24. Slide the rear part to the front until the pins can be inserted in the next hole. Then lock them with the safety clips.

  • Page 42: Towing The Crane

    MANUAL SPIERINGS TRUCK AT7 2.16. Towing the Crane Always contact Spierings Kranen before towing the crane. 2.16.1. Towing When the Diesel Engine Still Runs When the crane must be towed and the diesel engine still runs, following steps must be taken: •...
  • Page 43 MANUAL SPIERINGS TRUCK AT7 The steering pumps driven by the diesel engine, no longer supply oil, so the power steering will be largely lost. Only the emergency steering pump supplies oil for the power steering. However, it only supplies oil as long as the crane is moving.

  • Page 44: Maintenance

    MANUAL SPIERINGS TRUCK AT7 3. Maintenance “Normal operating conditions” stand for: • the forty-hour five days week • 15.000 – 20.000km/year • Ambient temperature: -15 to 40°C All oil and filter specifications are found in chapter 11. Technical Data 3.1. Safety Comply with all warning and safety regulations as mentioned in this manual.

  • Page 45: Oils And Coolant

    MANUAL SPIERINGS TRUCK AT7 3.1.5. Oils and coolant Different kinds of oil and lubricant, coolant, window washer fluid, battery acid and diesel oil can be harmful to your health when touched. Avoid any physical contact with these substances! 3.1.6. Environment...

  • Page 46: Maintenance Chart For The At7 Truck

    MANUAL SPIERINGS TRUCK AT7 3.2. Maintenance Chart for the AT7 Truck 2-Monthly Annual Maintenance Component Maintenance Daily Maintenance Weekly Maintenance 2-Yearly Maintenance 5-Yearly Maintenance Maintenance (15,000km) Diesel Engine Engine oil Check Change Oil filter Replace Cooling system Check Coolant Check...
  • Page 47 MANUAL SPIERINGS TRUCK AT7 2-Monthly Annual Maintenance Component Maintenance Daily Maintenance Weekly Maintenance 2-Yearly Maintenance 5-Yearly Maintenance Maintenance (15,000km) Pneumatic system Air dryer filter Replace Air vessels Draining Water separator Draining Brake pressure Check Hoses and couplings Check Lubrication Central lubrication...

  • Page 48: Diesel Engine

    MANUAL SPIERINGS TRUCK AT7 4. Diesel Engine Picture 4-1 As drive source the Spierings AT7 is fitted with a DAF-turbo diesel engine with intercooler. Technical Data Brand/type: DAF MX-375 S1 Fuel system: Water-cooled 6 cylinder 4-stroke diesel engine with direct injection...

  • Page 49: Service Inspections At Commencement Of Operations

    The truck's diesel engine will be fully serviced. Also the oil in the truck's entire drive line will be changed. The oil used by Spierings Kranen is synthetic oil (75W90). This oil can remain in all drive line components for a duration of two years.

  • Page 50: Engine Oil

    Turn the filler neck out as indicated in (Picture 4-4). Always top up engine oil of the same brand and type. (When in doubt please consult Spierings Kranen.) Check the oil level with the dipstick. (4.3.1 Check the Engine Oil Level.) Picture 4-4 AT7-EN-070103 aangepast 26-7-2018.docx...

  • Page 51: Change Engine Oil

    MANUAL SPIERINGS TRUCK AT7 4.3.3. Change Engine Oil Change the engine oil every 15,000km or at least once a year and during the annual inspection. Make sure the truck stands on level ground. Preferably run the engine till it reaches operating temperature and turn it off.

  • Page 52: Oil Filters Engine

    MANUAL SPIERINGS TRUCK AT7 4.4. Oil Filters Engine 4.4.1. Oil Filter Replacement Replace the oil filter every 15,000 operating hours and during the annual service inspection under normal operating conditions. Put a sufficiently big trough under the oil filter (1) at the left of the sump (2). (Picture 4-6).

  • Page 53: Centrifugal Filter Replacement

    MANUAL SPIERINGS TRUCK AT7 4.4.2. Centrifugal Filter Replacement Replace the centrifugal filter every 15,000 operating hours and during the annual service inspection under normal operating conditions. Clean the housing (3) and its surroundings. (Picture 4-8). Remove the central bolt (4) and remove the housing.

  • Page 54: Cooling

    MANUAL SPIERINGS TRUCK AT7 4.5. Cooling Carefully check every two months for leaks in hoses, lines, couplings as well as for damage of radiator, intercooler and fan. The DAF diesel engine is water-cooled. The radiator together with the intercooler are found at the right-hand side under the engine cowling in horizontal position.

  • Page 55: Top Up Coolant

    MANUAL SPIERINGS TRUCK AT7 4.5.2. Top up Coolant Prevent pouring cold coolant in a warm engine. If it is inevitable under special circumstances, it should be done very slowly while the engine is running. Coolant is a harmful substance. Protect the eyes and skin when you are handling Set the heater in the truck cab to max.

  • Page 56: Antifreeze

    MANUAL SPIERINGS TRUCK AT7 If it is hot, leave the engine to cool down properly. Set the heater in the truck cab to max. “warm”. so the heater valve fully opens. Remove the cooling system filler cap. Place a trough beneath the drain plugs.

  • Page 57: Air Inlet System

    MANUAL SPIERINGS TRUCK AT7 • With cold or hot water Preferably use a cold cleaning agent. Leave it to soak about 10 minutes and rinse it with a bound jet stream of water in longitudinal direction of the fins, in order to prevent damage.

  • Page 58: Air Cleaner Cartridge Replacement

    MANUAL SPIERINGS TRUCK AT7 4.6.2. Air Cleaner Cartridge Replacement Replace the air cleaner cartridge annually under normal operating conditions. Make sure the engine is not running. Open the right-hand cover of the engine cowling. Release the clips (1) at the side of the air cleaner lid (2) and remove the lid (Picture 4-12).

  • Page 59: Oil Pump Gearbox

    MANUAL SPIERINGS TRUCK AT7 Make sure the engine is not running. Unscrew lid (1) from the filter housing (2) (you can hear air expanding in the filter housing) and pull the lid together with the filter element (3) from the filter housing.

  • Page 60: Fuel Filter/Water Separator

    MANUAL SPIERINGS TRUCK AT7 Make sure the engine is not running. First you take out the old oil. At the bottom there is a T piece with a plug. This will get the old oil out. Once the oil has been removed, the plug can be put back again.

  • Page 61: Draining The Water Separator

    MANUAL SPIERINGS TRUCK AT7 4.9.1. Draining the Water Separator Drain the water separator every week. Rig up the tower in upright position. Unscrew the drain plug (3) at the bottom of the water separator some turns and drain the water.

  • Page 62: Poly V-Belts

    MANUAL SPIERINGS TRUCK AT7 4.10. Poly V-Belts 4.10.1. Poly V-Belts Replacement Check the V-belts every 15,000 operating hours under normal operating conditions and during the annual service inspection. Caution: Always use the same type Poly V-belt. 4.10.2. Poly V-Belt on the Cooler Pump...

  • Page 63: Poly V-Belt Generator

    MANUAL SPIERINGS TRUCK AT7 4.10.3. Poly V-Belt Generator Turn off the electrical power to the system by means of the main battery switch (switch 67) Loosen the tension pulley lock nut (17mm key). Caution: The tension pulley can be fixed temporarily by means of a 4-5 mm thick pin.

  • Page 64: Drive System

    MANUAL SPIERINGS TRUCK AT7 5. Drive System Picture 5-1 shows the AT7 drive system make-up. Picture 5-1 Diesel Engine Automatic transmission with torque converter / retarder Transfer case 5.1. Gearbox The ZF 12TC2740 is a fully automatic gearbox with a torque converter / retarder. This gearbox has 14 gears (12x forward, 2x reverse) which are changed electro pneumatically.

  • Page 65: Check Oil Level Gearbox

    MANUAL SPIERINGS TRUCK AT7 5.1.2. Check Oil Level Gearbox Check the oil in the gearbox every two months under normal operating conditions. To prevent measuring errors, the oil level should not be checked immediately after operation. The oil temperature should be under 40°C.

  • Page 66: Check Oil Level Torque Converter / Retarder

    MANUAL SPIERINGS TRUCK AT7 5.1.4. Check Oil Level Torque Converter / Retarder Check the oil in the torque converter / retarder every two months under normal operating conditions. To prevent measuring errors, the oil level should not be checked immediately after operation.

  • Page 67: Oil Filter Torque Converter / Retarder Replacement

    MANUAL SPIERINGS TRUCK AT7 Reinstall the drain plugs (tightening torque 60 Nm). Pour fresh oil (approx. 18 litres) through filler neck (1) until level A (picture 5-5) is reached. Engage the parking brake and shift the gearbox in neutral N. Run the engine until the oil level has dropped to level C, in order to fill the heat exchanger and connecting lines with oil.

  • Page 68: Transfer Case

    MANUAL SPIERINGS TRUCK AT7 5.2. Transfer Case The transfer case is a STEYR model VG2701/400. This transfer case distributes the torque at input shaft (1) over 2 driven shafts (2 and 3). (Picture 5-7). Driven shaft (2) is for driving the driven axles 1,3 and 4.

  • Page 69: Change Oil In Transfer Case

    MANUAL SPIERINGS TRUCK AT7 Shaft (1) is the input shaft and shaft (2) is the drive shaft for driving driven axles 1, 3 and 4. (Picture 5-8). Make sure the truck is standing on level ground. Unscrew the plug from the filler hole (1). (Picture 5-8).

  • Page 70: Axles

    MANUAL SPIERINGS TRUCK AT7 5.3. Axles Picture 5-9 7 Kessler & Co Axles Axle No. Steered Driven Differential End Reduction Axle 1 Mechanical Single 7.33 Axle 2 Axle 3 Mechanical Feed-through 7.29 Axle 4 Only: off-the-road Mechanical Feed-through 7.29 Axle 5...

  • Page 71: Check The Oil Level In The Differentials

    MANUAL SPIERINGS TRUCK AT7 5.3.2. Check the Oil Level in the Differentials Check the differentials oil level every two months under normal operating conditions. To prevent measuring errors, the oil level should not be checked immediately after operation. The oil temperature should be under 40°C.

  • Page 72: Change Oil In Differentials

    MANUAL SPIERINGS TRUCK AT7 5.3.3. Change Oil in Differentials Under normal operating conditions change oil every year during the annual inspection. Caution! The differentials and the oil are hot when the truck has run for a considerable amount of time.

  • Page 73: Chang Oil In The Hubs

    MANUAL SPIERINGS TRUCK AT7 5.3.5. Chang Oil in the Hubs Under normal operating conditions change oil every year during the annual inspection. Caution! The hubs and the oil are hot when the truck has run for a considerable amount of time.

  • Page 74: Check The Brake Linings

    MANUAL SPIERINGS TRUCK AT7 5.5. Check the Brake Linings Check the brake lining during the annual inspection under normal operating conditions. At the rear of every brake drum can be checked, if the brake lining is sufficiently thick for safe road travel. The brake lining must be replaced if it is worn up to the wear ring at the brake lining rim.

  • Page 75: Steering System

    Hydraulic (auxiliary-)cylinders Main steering cylinder rear axle steering Picture 6-1 shows the steering system's structure. The AT7 steering system can be operated in two modes, i.e. "on the road" and "off the road”. In "on the road” mode, axles 1, 2, 3, 5, 6 and 7 are steered, whereas axles 5, 6 and 7 steer in opposite direction from axles 1,2 and 3.

  • Page 76: Mechanical

    MANUAL SPIERINGS TRUCK AT7 Table 6-1 shows the steering mechanism for each axle. Here we distinguish between: Mechanical (see Picture 6-1) The steering wheel rotation is mechanically converted in the steering gear housing (A) and powered (D) in the movement of the steering rods (B). They for their part operate the steering arms (C) of axles 1,2 and 3.

  • Page 77: Alignment

    Before aligning the truck, the play on the steering arm and rods must be checked. As the crane is fitted with an electronic rear axle steering, we advise that you contact Spierings Kranen when aligning the truck for the first time.

  • Page 78: Electrical System

    MANUAL SPIERINGS TRUCK AT7 7. Electrical System The truck's on-board voltage is 24V. It is supplied by two 12 Volt 165 Ah batteries, series connected. During operation, these batteries are charged by a 24V alternator with a max. charging current of 35Ah.

  • Page 79: Batteries

    MANUAL SPIERINGS TRUCK AT7 7.3. Batteries 7.3.1. Check the Batteries Check the truck's batteries every two months. Caution! Battery acid is harmful for humans and environment. Handle with care! When checking the batteries pay attention to the following: • Is the fluid level still acceptable (top up with distilled water if necessary).

  • Page 80: Batteries Replacement

    MANUAL SPIERINGS TRUCK AT7 7.3.3. Batteries Replacement We advise to first check the batteries' functioning before replacing them. Replace the batteries always by batteries of the same type and measurements. Make sure the engine is not running. (Remove the key from the ignition.) Rig up the crane's tower in upright position.

  • Page 81: Hydraulic System

    8. Hydraulic System The AT7 has a hydraulic tank containing 400 litres, it is divided in 2 compartments of ±200 litres each at both sides of the truck (in the chassis). These compartments are connected by means of a connecting line.

  • Page 82: Changing Hydraulic Oil

    MANUAL SPIERINGS TRUCK AT7 8.2. Changing Hydraulic Oil Change the hydraulic oil every 5 years after oil analysis. To change the hydraulic oil first an oil sample must be analyzed. If you have to change the oil, all hydraulic cylinders (including the suspension cylinders) must be retracted.

  • Page 83: Hydraulic Oil Filter Replacement

    MANUAL SPIERINGS TRUCK AT7 8.3. Hydraulic Oil Filter Replacement Replace the hydraulic oil filters during the annual service inspection under normal operating conditions. 8.3.1. Hydraulic Fine Filter Picture 8-3 The hydraulic fine filter (1) is found under the left engine cowling. (Picture 8-3) In order to reach it, the upper cover must be removed after the tower has been rigged up in upright position.

  • Page 84: Hydraulic Filters

    Check the suspension system accumulators every year under normal operating conditions. The AT7 suspension system has got 14 (7 x 2) accumulators, that are all mounted on the axles' hydraulic suspension cylinders. In order to check the accumulators you need a special HYDAC tool. The pressure should be 110 bar.

  • Page 85: Check Oil Level

    MANUAL SPIERINGS TRUCK AT7 8.6. Hydraulic Brake Power Axle 1 Check the hydraulic oil level every two months under normal operating conditions. Caution! Do NOT use DOT-oil, for oil specifications please refer to the enclosures. The brake for axle 1 is partly hydraulically powered through a separate hydraulic circuit. It has its own small hydraulic reservoir in the cab, behind the co-driver's seat.

  • Page 86: Pneumatic System

    MANUAL SPIERINGS TRUCK AT7 9. Pneumatic System The pneumatic system consists of a primary system and a secondary system. (For the pneumatic diagram please refer to the enclosures) The primary system for the truck's brakes, consists of 3 circuits. The secondary system for the accessories, consists of 2 circuits.

  • Page 87: Secondary System: Accessories And Gearbox

    MANUAL SPIERINGS TRUCK AT7 • Vessel 2 + 3 (100 + 30 litres) These vessels supply the (operating) brake booster of axles 4 to 7. Through the brake pedal, they also supply the control air for operating the relay valves for the (operating) brake boosters of axles 3 to 6.

  • Page 88: Air Vessels

    MANUAL SPIERINGS TRUCK AT7 9.3. Air Vessels Check the air vessels for the presence of condensed water every week. Check the air vessels for condensed water by pressing the drain valve ring under the air vessels. In case of frequent condensed water in the vessel, the air dryer element must be replaced. (See section 9.4.) Picture 9-2 9.4.

  • Page 89: Water Separator

    MANUAL SPIERINGS TRUCK AT7 9.5. Water Separator Drain the water separator every two months under normal operating conditions. The water separator is found in the chassis near the hydraulic tank on the right (behind the girder at axle 3). The water separator is shown in Picture 9-4 and consists of the following...

  • Page 90: Check Brake Pressure

    MANUAL SPIERINGS TRUCK AT7 To clean or replace the filter element, the bolt on the filter element must be loosened by means of a special filter wrench. (Picture 9-7) Picture 9-7 The secondary air circuit pressure (5,5 bar) can be set through pressure relief valve (1, Picture 9-4) on the water separator.

  • Page 91: Lubrication

    MANUAL SPIERINGS TRUCK AT7 Lubrication 10.1. Central Lubricating System Every two months the central lubrication must be checked, on all points that need lubrication. Also make sure to check the grease level in the grease container. Coupling, hinges and bearings are points that need regular lubrication with grease, several so regularly, that a central lubricating system is the perfect solution.

  • Page 92: Grease Points Central Lubricating System

    MANUAL SPIERINGS TRUCK AT7 10.1.3. Grease Points Central Lubricating System A. Pins suspension cylinders top and bottom. B. Stub axles top and bottom C. Suspension bearing steering shaft Picture 10-3 Picture 10-4 10.2. Manual Lubrication The lubrication interval for points that need manual lubrication is every two months.

  • Page 93: Cardan Shafts

    MANUAL SPIERINGS TRUCK AT7 10.2.2. Cardan shafts The universal joints must be lubricated manually. In the universal joint you will find a grease nipple (A) (see picture 10-6). Picture 10-7 (A to N) shows the locations of the universal joints.

  • Page 94: Miscellaneous

    Work to the air-conditioning system should only be carried out by qualified personnel. If the air-conditioning does not function, if must be repaired as soon as possible to prevent more serious damage to the system. If necessary, contact Spierings Kranen. 11-1...

  • Page 95: Technical Data

    MANUAL SPIERINGS TRUCK AT7 Technical Data Diesel Engine Spierings No. Engine oil OLSM00100180 ELF 10W40 = ACEA E4/E5 Oil filter DAF No. 1397765 SERV01150065 Centrifugal filter DAF No. 1376481 SERV01150066 Poly V-belt water pump Poly V-belt generator SAE-J-1034 or ASTM D 3306...

  • Page 96: Enclosures

    MANUAL SPIERINGS TRUCK AT7 Enclosures Enclosure 1 General Enclosure 2 Table of Contents Enclosure 3 General Views Enclosure 4 Electrical Diagrams Enclosure 5 Hydraulic Diagrams Enclosure 6 Views 13-1 AT7-EN-070103 aangepast 26-7-2018.docx...

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