AS MOTOR AS 940 Sherpa 4WD RC Workshop Manual
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AS MOTOR AS 940 Sherpa 4WD RC Workshop Manual

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WORKSHOP MANUAL
01/2021 EN
AS-MOTOR Sherpa
AS 940 4WD RC
Service Information
Adjustment, maintenance and repair
instructions

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Summary of Contents for AS MOTOR AS 940 Sherpa 4WD RC

  • Page 1 WORKSHOP MANUAL 01/2021 EN AS-MOTOR Sherpa AS 940 4WD RC Service Information Adjustment, maintenance and repair instructions...

  • Page 2: Table Of Contents

    Drive lever – traction drive activation. p. 45 3.1. Drive lever – remove drive lever activation element p. 46 3.2. Drive lever activation elements – angle sensor p. 48 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 3 • Activating and finishing p. 104 • Procedure p. 93 Personal notes p. 105 Error codes (shown in the display of the remote control): • Overview – causes and remedy p. 94 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 4 Workshop Manual AS 940 Sherpa 4WD RC: Table of contents: 3/3 Important safety notice for this RC device: workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 5: Introduction

    Deviating device versions (first series/current series) Safety instructions Since the market launch of the AS 940 Sherpa 4WD RC in November 2015, Only authorised AS-MOTOR Workshops are allowed to execute the activities technical changes of the device have been made on a constant basis.

  • Page 6: Warning "Welding Tasks

    Accidents with severe or fatal injuries can be the result. All original wear parts, all original blades and many original spare parts bear the stamped AS-MOTOR logo, as well as the EXXXXX and/or G XXXXXXXX part number. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 7: Accessories

     Standard tyres (front and rear) AS 940 4WD XL, AS 940 4WD RC  Spray paint 400 ml, colour orange, RAL 2000 Accessory is not available as spare part in "parts&more.org" (PAM). Order is the same as for machines. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 8: Online Service Portal "Parts-And-More.org" (Pam) 1/2

    Access to the online portal "parts-and-more.org": Every official AS-Motor dealer has access to the online service portal via his customer number. Login access to the system occurs via the website: www.parts-and-more.org workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 9 Shopping cart Complete overview Device and Parts direct selection assembly selection highlighted red Spare parts list Spare part function Parts information Change notifications Availability Other useful functions workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 10: General Information

     Only attach hoists on the main frame, only the main frame can bear the  Covers, protective cloths, muffler weight.  Tank, fuel tap, carburettor, engine, transmission, battery, hydraulic system  Safeguard the device against tipping over or falling. for leaks workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 11 8. Press the emergency stop switch on the device. 8. Result: The engine must switch off. 9. Result: It must: The engine must switch off and the status light on the device must be continuously illuminated. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 12 Material is subject to fatigue; hairline cracks can develop. 4. Select operating mode MC. (Example: blade bars) 5. Unlock traction drive. (Lever on the hydrostatic transmission) 6. Activate the parking brake. (Drive lever in position "P") workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 13 9. Result: At full speed the blade must come to a complete standstill in less than 5 seconds. The status lights on the device must go out. Check hydrostatic transmission See section "Drive system". workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 14: Cleaning And Maintenance Intervals

    By the user when the engine is at a standstill B Yearly or every 50 operating hours By the user when the engine is running Through the authorised workshop workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 15: Tyre Sizes, Wheel Dimensions, Tyre Pressures 1/2

     Slow pressure loss of a tyre indicates that there is a thorn in the tyre.  Tubed tyres cannot be easily used without a tube.  Next page: Overview TABLE "Wheels" workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 16 18 x 9.50-6 15 psi / 1.00 bar 24 psi / 1.65 bar Terrain Optional Tightening torque wheel bolts: Rear wheels: 100 Nm  Front wheels: 40 Nm  workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 17: Nbb Radio Remote Control 1/2

    The specified range of 100 meters is only achieved if there are no obstructions (trees, houses) or weather conditions (fog) that interfere with the radio connection. Channel Signal 100 meters Obstructions (houses, trees, etc.) interfere with the radio signal and reduce the range of the radio remote control. 100 meters workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 18: Tightening Torques For Bolted Connections

    433.1 - 434.75 MHz. Interferences can also come from the engine. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 19: Meaning Of The Led Display Of The Nbb Control Box

    General information Meaning of the LED display of the NBB control box workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 20: Je Error, Installtion And Calibration

    Switch“ and switch an the transmitter till Procedure by AS 750 RC, AS 751 RC „Jt“ will display. and AS 940 RC similar Frequency Swith now releae workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 20 www.as-motor.com...

  • Page 21: Software

    Attention as of 05/2016, the test resistor was integrated into the RC system Systems before 05/2016 need a resistance cable between the horn and the wiring harness as soon as the horn or receiver is before 05/2016 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 21 www.as-motor.com...

  • Page 22: Frequent Faults And Rectification (Troubleshooting), First

    Rectify the emergency stop situation. Fuse is defective. Replace. (See section "Electrical system") Battery on the device is depleted. Charge battery. (See section "Electrical system") Battery on the device is empty. Replace battery. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 23: Hydrostatic Transmission "Tuff Torq / Kanzaki

    Check engine oil level, top-up. No oil pressure – excessive inclination. Bring device into a level position. Poor, contaminated, or old fuel. Clean fuel system. Refuel with fresh fuel. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 24 MC mode: Safety switches are not activated. Bring drive lever into zero position.  Load seat contact switch through the weight of the  driver. Insert transmitter in the transmitter holder. (Magnetic  switch) workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 25 Smoke coming from engine. Air filter contaminated or soaked with oil. Service or replace air filter. Oil level too high. Reduce oil level to the "max" mark. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 26 Install optional mulch kit. (Maximum grass height for mulch kit 40 cm) The device does not stop when the brake is activated. Brake is incorrectly adjusted, worn or defective. Adjust brake correctly or repair it. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 27 Seat contact switch activated. Exit the driver seat. Device does not drive straight ahead. RC mode: Trim of the steering incorrectly adjusted. Adapt the trim with the rotary knob on the transmitter. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 28: Overview And Maintenance Schedule

    Mower deck switches off after 5 seconds, error message Safety-related switch-off of the mower deck because remote control unit is not operated workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 28 www.as-motor.com...

  • Page 29: The 6 Special Rc Components

    The special RC components Overview 1/4 1. Steering: The AS 940 Sherpa 4WD RC differs from a normal AS 940 Sherpa 4WD in the following components and assemblies: 1. Steering: Steering actuator with gear motor and mechanical clutch. 2. Drive lever: Drive lever (drive lever activation) with gear motor and clutch.
  • Page 30 The special RC components Overview 2/4 2. Drive lever: 3. Blade clutch: workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 31: Cleaning Or Replacing Air Filter And Spark Plug

    The special RC components Overview 3/4 4. Cutting height adjustment: 5. Limited-slip differential: workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 32: Oil Change - Hydrostatic Transmission

    The special RC components Overview 4/4 6. Changeover lever: 7. Control unit and electrical system: workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 33: Changeover Lever - Its Four Functions

    4. Activation – drive lever Cable 1: Steering clutch Drive lever clutch on MC mode. Activates mechanism of the steering clutch. Can be adjusted on both cable stops. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 34 Adjustment only on one cable stop possible. Only on the When switching to RC mode changeover lever. Other cable the shift gate of the drive lever stop is fixed. (Illustration) lifts. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 35 In RC mode the cable pulls on the lever of the activation. The aluminium bushing moves into the spring and the spring is compressed. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 36: Steering - The Steering Activation Element

    If it by chance is (A) and moves the ratchet lever on tooth-to-tooth, it engages (B). briefly after changeover. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 37: Replacement (Repair) Of The Steering Pinion

    When the sheet metal gear element. steering gear is loose, then pull out the steering wheel slightly and take out the gear with feather key and detent edge washer. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 38 Thereafter place the on the opposite side! changeover lever on MC mode. Now put together in the reverse Tighten gear. To do this, sequence. counter by holding the steering wheel. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 39: Replacing The Drive Belt (Hydrostatic Transmission)

    It lightly touches the incorrectly. Quickly switch off steering sensor. the machine. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 40: Assembly Slipper Clutch From Sn 027419060001

    The special RC components 2.2. Assembly slipper clutch from SN 027419060001 1/5 modification kit for machines up to SN 02741906001 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 40 www.as-motor.com...
  • Page 41 2.2. Assembly slipper clutch from SN 027419060001 2/5 Remove steering activation Remove locking switch element Remove bolts of the engine Remove engine hub and steering pinion Remove locking ring workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 41 www.as-motor.com...
  • Page 42 Remove the bearing block Fix the brackets with the mounting ring Push the brackets onto the engine hub until they snap in Mount the bearing shell with 3 bolts workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 42 www.as-motor.com...
  • Page 43 Mount the bearing and tighten the 3 bolts Assemble the bearing block Mount the pressure plate on the engine Mount 3 feather keys on the Mount the sliding disk engine hub workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 43 www.as-motor.com...

  • Page 44: Blade Belt Replacement

    8Nm + Loctite 222 Mount the bearing and the Mount the sterring pinion on the pressure plate on the steering steering activation element pinion 8Nm + Loctite 222 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 44 www.as-motor.com...

  • Page 45: Drive Lever - Traction Drive Activation

    Spring pack (A) must be slightly tensioned in RC mode. In MC mode, the gears are Mechanism must move easily. separated. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 46: Drive Lever - Remove Drive Lever Activation Element

    Place the changeover lever on Unscrew screws. MC mode. Unscrews screws of the cover Unscrew screw. (branch deflector). Take off cover. Take out drive lever activation in this position. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 47 Tip/note: Tip/note: First fit on all screws loosely, PAM shows you all parts and and only tighten them the install sequence in the thereafter. exploded drawings. (See section "Introduction") workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 48: Drive Lever Activation Elements - Angle Sensor

    Angle sensor unscrewed. Sensor cable pointed In this 90 degree position the downward! guide of the position encoder See illustration above. (Y) can be taken off. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 49 (both pointing downward)! Important: Always install the aperture of the position encoder in the direction of the cable of the angle sensor. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 50: Cutting Height Adjustment - Spindle Drive With Limit Switches

    Setting the zero position of the Coming from the lowest cutting pointer: position, the pointer should move to this position "highest Mower deck in highest level = cutting height" position. transport position ("0"). workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 51: Checking The Blade Enclosure

    73 orange By unscrewing the connection nut, the microswitch holder can be adjusted. The retighten the nut and try out the end positions. Rule: "Holder upward, end position upward". workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 52 Both switches are normally "1" both switches are also opened. open contacts. Please pay attention to the plug pin assignment of the switches. For each switch one pin is not assigned. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 53: Blade Enclosures Removal

    Red cable in the middle, blue cable on top removed and the curved path is moved Red cable in the middle, orange cable left upward or downward. Important: Holder upward, end position downward workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 54: Blade Clutch Activation - Gear Motor With End Position Detection

    By pulling off the engine plug adjusted via the slotted holes. connector, the blade clutch can be tested without the engine running. (Switch on, pair, and briefly press and test the Start button) workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 55: Limited Slip Differential - Spindle Drive

    Install situation, (viewed from the rear). differential drive diagonally into a pit. Bring two wheels to spin (no contact). When switching on the lock the rear axle will be blocked. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 56: Blade Brake, Blade Bearing And Blade Clutch

    Limited-slip differential off -12.5 V The NBB control box takes the current from the connection 5 seconds after reaching the "Off" position. View from the rear View in removed status workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 57: Electrical System

    Select measuring range, connect measuring leads, in the flow direction Resistance diode a low resistance value is shown, in the blocking direction a resistance value in the MΩ range is shown workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 58: Circuit Diagram As Sherpa 940 Rc / 940 Rc Us 1/2

    16. Sensor drive lever 17. Motor drive lever 18. Starter 19. Start relay 20. Main switch 21. Ignition 22. Emergency stop 23. Carburetor valve 24. Main relay 25. Generator 26. Battery workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 59: Adjusting The Blade Enclosure

    Electrical system Circuit diagram – AS Sherpa 940 RC / 940 RC US 2/2 Main switch "On" Supply signal workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 60: Electrical Components (Overview)

    Angle sensor, steering Limited slip differentials activation activation Steering activation Ignition relay Seat contact switch 12 V charging socket Hour meter Plug-in fuses Solenoid starter switch Drive lever activation element workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 61: Cabling - Steering Activation, Seat Contact Switch 1/3

    Red cable in the middle. is engaged in the three openings. Power supply of the gear Plug connection of the seat motor. contact switch. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 62: Cabling - Cutting Height Actuator And Blade Clutch Actuator

    Important: Pay attention to the blade clutch activation element! pin assignment. In each case one pin remains free. orange workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 63: Cabling - Switches, Status Lights, Horn, Emergency Stop, Solenoid Switch

    Status light left and rocker Horn and status light right. switch "On/Off". Status light left and rocker Solenoid starter switch switch "On/Off". red-black Status light right, horn and emergency stop switch. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 64: Testing The Sensor - Drive Lever Position And Steering 1/2

    With the angle sensor and install measuring adapter. With the controller move towards the controller move towards the stops of the drive lever stops of the steering workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 65: Section "Drive Lever (Return Force)

    10 A 20 A A 24 volt gear motor is installed on the steering, due to its torque curve and its power curve in 12 volt operation. Measuring adapter workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 66: Mode Of Operation Of The Angle Sensors

    This notch must always point in the direction of the cable of the angle sensor. If this is not the case the angle sensor outputs a wrong signal. Hall Sensors workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 67: Checking The Steering, Blade Clutch And Height Adjustment Switches

    Check the switches for contamination and function. The switches must be free of grass residues and cuttings. There must be no material between switch tongue and switch, this can cause a failure of the functionality. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 68: Voltage Supply Nbb Control Box, Battery Charging Current And Fuses

    10 A Safety switch Emergency stop switch, seat Full throttle: approx. 13.9 V contact switch, blade clutch monitor, cutting height monitor 10 A Main switch Main switch, on-board power socket workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 69: Testing Power Coil And Regulator

    Measured value: approx. 30 V Resistance: approx. 1.3 ohms Idle: approx. 13.0 V Full throttle: approx. 14.0 V Caution: AC voltage workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 69 www.as-motor.com...

  • Page 70: Microswitch Overview

    High adjustment transport Closer contact 1 - 3 closed open open position Blade "ON" Open contact 1 - 2 closed open Messerkupplung "Aus" Closer contact 1 - 3 open closed workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 71: Installation Instructions - Faraday Cage

    The interference radiation of the ignition is intercepted by the sheet metal element under the NBB control box and is fed into the battery via a ground cable. Ground cable Sheet metal element partnumber G06927412 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 72: Checking The Battery

    When cornering this motor runs faster or slower. The servomotor is activated via a linkage. It must be ensured that the linkage is not bent. This can cause a blocking of the front angle. Adjustment unit Adjustment motor workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 73: Battery Does Not Charge

    Hydraulic system Axle drive front 2/2 Hydraulic system diagram Front axle Rear axle workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 74: Workshop Operation

    So it can be activate and it works for approx. 3 Minutes. After this it has to be activate new. Attention: during this time the blade function is deactivate. Please take a look at page 102/103. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page...

  • Page 75: Operating Elements

    Brake pedal (right) brings the rod, open the threaded fittings drive level into position "P" via (4), adjust the rod by turning it, a Bowden cable. and relock it. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 76 Adjustment "play-free" on the cable fastening, without the lever being activated. Test: Activation of the brake pedal brings the drive lever into position "P" before it touches the frame. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 77: Seat Spring Package G06980045

    AS 940 Sherpa 4WD RC from 027417080036 AS 940 Sherpa 4WD from 021917080011 AS 940 Sherpa 4WD XL from 026417080011 AS 920 2WD from 027617080001 AS 940 Sherpa 4WD XL US from 028017080001 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 78: Installation Instructions

    Bowden cable in a loop to the element left side of the vehicle Detach Bowden cable on the Install Bowden cable on the MC – RC changeover and drive lever activation element remove cable workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 79: News From February 2019

    AS 940 Sherpa 4 WD 21917080011 since Juni 2018 AS 940 Sherpa 4 WD XL 26417080011 AS 940 Sherpa 4 WD XL, US 28017080001 AS 940 Sherpa 4 WD RC 27417080036 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 79 www.as-motor.com...

  • Page 80: Engines, New Emission Standard

    - Changed carburettor (plastic) AS 915 Sherpa 2WD AS 920 Sherpa 2WD #027617110003 AS 940 Sherpa 4WD #021917110001 AS 940 Sherpa 4WD XL #026417110022 AS 940 Sherpa 4WD RC #027417110001 workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 80 www.as-motor.com...

  • Page 81: Calibrating

    2. When a change in the mechanical systems has changed the teach values, Teaching – maximum drive lever settings (forward/reverse)  and the machine no longer functions faultlessly. 3. When the teach values are no longer right due to other influences. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 82: Teaching - Overall (Steering And Drive Lever) 1/3

    Use the joystick to move the drive lever "Drive forward" to "Max." forward speed and hold it there. Store position by activating the "Horn" button. (Machine emits a horn tone) p.t.o. Continued next page. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 83 (machine emits a horn tone). After releasing the joystick the steering can move toward the middle position. Activate the "Channel change" button. Steering does not move. Continued next page. p.t.o. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 84 Test straight-ahead movement with equal tyre pressure in RC mode on flat and level terrain. If necessary repeat teaching of the steering. (See instruction set "Teaching steering" p. 57-60). workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 85: Teaching - Middle Position Of The Drive Lever 1/2

    (Selection maximum position) Switch off transmitter (not the machine) and wait until the machine transitions to interval honking. (Settings will be saved in the receiver) p.t.o. Continued next page. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 86 Test straight-ahead movement with equal tyre pressure in RC mode on flat and level terrain. If necessary repeat teaching of the steering. (See instruction set "Teaching steering" p. 57-60). workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 87: Teaching - Maximum Drive Lever Settings 1/2

    (forward). Switch off transmitter (not the machine) and wait until the machine transitions to interval honking. (Settings will be saved in the receiver). p.t.o. Continued next page. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 88 Machine acknowledges with horn tone. Use the joystick “Drive" to test the drive function. (Middle position and "Max." drive lever positions) (Note: End stops are intentionally not reached) Switch off transmitter and machine. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 89: Teaching - Middle Position, Steering 1/2

    (Machine emits a horn tone) Turn rotary button drive speed to the rabbit. (Selection maximum position) Activate the "Channel change" button. Steering does not move. p.t.o. Continued next page. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 90 Machine acknowledges with horn tone. Use the joystick to test the steering function. (Middle position and "Max." steering deflection) (Note: End stops are intentionally not reached) Switch off transmitter and machine. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 91: Teaching - Maximum Steering Deflection 1/2

    (machine emits a horn tone). After releasing the joystick the steering can move toward the middle position. Place rocker switch "Steering reversal" at normal position (forward). p.t.o. Continued next page. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 92 Machine acknowledges with horn tone. Use the joystick to test the steering function. (Middle position and "Max." steering deflection) (Note: End stops are intentionally not reached) Switch off transmitter and machine. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 93: Troubleshooting And General Test Of The Machine

    See the procedure in the section "General information", Safety test.  Go through the list of Go through frequent faults and rectification error codes. Always from "Troubleshooting". top to bottom. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...

  • Page 94: Overview - Causes And Remedy

    Repair control line Steering microswitch loose or incorrectly Readjust and tighten adjusted Steering microswitch is defective Replace Short circuit between supply line and seat Repair steering control line microswitch workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 95 Middle position of the drive lever not adjusted Re-teach middle position see NBB operating correctly manual Steering microswitch loose or incorrectly Readjust and tighten adjusted Steering microswitch is defective Replace workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 96 Emergency stop due to strong vibration and Drive slower on uneven terrain impact If necessary lower tyre pressure Check blade for imbalance Check engine fastening Engine bonnet loose or open Close / fasten engine hood workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 97 Fuses no. 1-3 (10 A) blown Eliminate the cause that tripped the fuse and replace fuse Cable break in the supply lines or the earth lines Repair of the control system workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 98 Fuses no. 1-3 (10 A) blown Eliminate the cause that tripped the fuse and replace fuse Cable break in the supply lines or the earth lines Repair of the control system workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 99 Fuses no. 1-3 (10 A) blown Eliminate the cause that tripped the fuse and replace fuse Cable break in the supply lines or the earth lines Repair of the control system workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 100 Fuse no. 5 (10 A) blown Eliminate the cause that tripped the fuse and replace fuse Fuses no. 1-3 (10 A) blown Eliminate the cause that tripped the fuse and replace fuse workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 101 (linear actuator) Poor contact in the plug connector of the cutting Ensure good contact, e.g. with contact spray height adjustment element Cutting height adjustment element (linear Replace actuator defective) workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 102 Important: The error code display on the remote control unit occurs according to a prioritisation of the occurring errors. The error with the highest priority is displayed first. For this reason pay close attention to the sequence in which the errors are displayed. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page...

  • Page 103: Emergency Driving Programme

    You have experience in the safe • handling of the device The rotating blade is not a hazard • Restricted cornering does not lead to • hazards workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 103 www.as-motor.com...

  • Page 104: Activating And Finishing

    Notice: If the engine does not start, rescue with the emergency driving programme is not possible Finishing the emergency driving programme: Press the start-stop switch (1) to finish the emergency driving programme. workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Seite 104 www.as-motor.com...

  • Page 105: Personal Notes

    Personal notes workshop manual AS 940 Sherpa 4WD RC 01/2021 EN Page www.as-motor.com...
  • Page 106 AS-MOTOR Germany GmbH & CO.KG Ellwanger Strasse 15 74424 Bühlertann, Germany www.as-motor.de info@as-motor.de www.parts-and-more.org All rights reserved. Reprint, duplication or publication without approval are prohibited. Subject to technical changes.

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