Related Manuals for nifty SD64 Series
Summary of Contents for nifty SD64 Series
- Page 1 SD64 Service Manual MODEL SD64 SERIES SCALE 1.000 Niftylift Limited 1525 S.Buncombe Road Greer SC 29651 www.niftylift.com e-mail: niftyusa@niftylift.com Tel: 864-968-8881 Fax: 864-968-8836 M50810/03...
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Page 3: Table Of Contents
SD64 4X4X4 Service Manual 1 INTRODUCTION AND GENERAL INFORMATION ................1 1.1 Foreword ..............................1 1.1.1 Defined maintenance terms......................1 1.2 Warranty...............................2 1.3 Scope..............................2 1.4 General maintenance information ......................3 1.4.1 Pre-maintenance checks.......................3 1.4.2 Maintenance information.......................3 1.4.3 Frequent inspection........................4 1.4.4 Annual inspection .........................5 1.5 Maintenance safety information......................5 1.5.1 Personal injury prevention ......................5 1.5.2 Machine damage prevention ......................5 1.5.3 Diesel system safety........................6... - Page 4 SD64 4X4X4 Service Manual 3.3.12 In-line fuel filter replace......................27 3.3.13 Exhaust system inspect ......................28 3.3.14 Fan belt check .......................... 28 3.4 Base assembly ........................... 29 3.4.1 Tire condition check ........................29 3.4.2 Tire pressure check ........................29 3.4.3 Track rod end lubrication (daily)....................29 3.5 Drive hub gearbox ..........................
- Page 5 SD64 4X4X4 Service Manual 5.3.1 Overview ............................52 5.3.2 Charging system.........................52 5.4 Hydraulic system overview........................53 5.5 Hydraulic pumps..........................54 5.6 Hydraulic valve blocks ........................54 5.7 Brake release ............................54 5.8 Steering ..............................54 5.9 Electrical control system overview.......................55 5.10 Control logic .............................55 6 TROUBLESHOOTING GUIDE......................56 6.1 Troubleshooting information........................56 6.2 Platform function fault finding......................56 6.3 Engine fault finding..........................57...
- Page 6 SD64 4X4X4 Service Manual Notes English US 10/20...
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Page 7: Introduction And General Information
SD64 4X4X4 Service Manual Introduction and general information Foreword The purpose of this manual is to provide the owner, service engineer or technician with information to service and maintain the Niftylift. Prior to carrying out any maintenance or operating the Niftylift the operator's manual should be read and fully understood. -
Page 8: Warranty
If after reading this manual you require further information contact us at your nearest office or see the My Nifty section on www.niftylift.com. Niftylift Inc, 1525 S.Buncombe Road, Greer, SC 29651 USA Tel: +01 864 968 8881 Fax: +01 864 968 8836... -
Page 9: General Maintenance Information
SD64 4X4X4 Service Manual General maintenance information Any repair or maintenance work on a Niftylift must be undertaken by a competent person with sufficient training and experience to perform the activity. Basic mechanical, hydraulic, and electrical skills are required to perform routine maintenance and minor repairs to a Niftylift. However, several procedures require specialized skills, tools, lifting equipment and a suitable workshop. -
Page 10: Frequent Inspection
M50180 Engine Operator’s Manual M50292 For easy access to any of the above documents go to www.niftylift.com, register in the 'My Nifty Registration' section, then navigate to the 'My Nifty' section and enter the Niftylift Serial Number. 1.4.3 Frequent inspection The owner of the Niftylift shall make sure that a frequent inspection is carried out in accordance with the manufacturer’s instructions, on a Niftylift:... -
Page 11: Annual Inspection
SD64 4X4X4 Service Manual 1.4.4 Annual inspection The owner of the Niftylift shall make sure that an annual inspection is performed no later than thirteen (13) months from the date of the prior annual inspection. The inspection must be made by a person qualified as a technician on the specific type of Niftylift or one having similar design characteristics. -
Page 12: Diesel System Safety
SD64 4X4X4 Service Manual 1.5.3 Diesel system safety Escaping fuel under pressure can penetrate the skin causing serious injury. Do not attempt work on the fuel system without proper training and safety equipment. Seek immediate medical attention in the event of fuel penetrating the skin. 1.5.4 Hydraulic safety Hydraulic oil escaping under pressure can penetrate... -
Page 13: Environmental Awareness
SD64 4X4X4 Service Manual 1.5.6 Environmental awareness When draining fluids, ensure they are collected in a suitable container and spillages are avoided. Used batteries must be disposed of in the correct manner as waste is harmful to the environment. Consumables such as oils, rags and gloves should also be disposed of correctly in accordance to local regulations as waste is harmful to the environment. -
Page 14: Specifications
SD64 4X4X4 Service Manual Specifications Information correct at time of print, refer to serial number of the Niftylift. Engine specifications Feature Kubota V1505 Type Water cooled 4-cycle, 4 cylinder diesel engine Fuel Diesel fuel grade 2-D Engine oil See section 2.4.2 Mass (Dry weight) 110kg (243 lbs) Displacement... -
Page 15: Function Times
SD64 4X4X4 Service Manual Function times Function Up/right/out/down/left/in Time, (Seconds) Rotation (180°) Tele in Rotation (180°) Tele out Links Luffing Tele out Luffing Tele in Fly boom Telescope (luffed up) Cage rotate Machine Speed High revs Low revs Engine speed 2400±50 rpm 1500±50 rpm Niftylift drive speed FWD/REV... -
Page 16: Fluid Properties
SD64 4X4X4 Service Manual Fluid properties 2.4.1 Fluid volumes Fluid Volumes Hydraulic oil tank 80.0 L (21.13 US Gal) Fuel tank 80.0 L (21.13 US Gal) Engine oil 6.0 L (1.58 US Gal) Coolant Approx. 4.5 L (1.19 US Gal) 2.4.2 Engine oil specifications Engine... -
Page 17: Engine Coolant Specifications
SD64 4X4X4 Service Manual 2.4.5 Engine coolant specifications Use permanent type (PT) for the Kubota V1505 engine. When anti-freeze is mixed with water, the ratio must be less than 50%, see table below. Freezing Point Boiling Point Volume % Volume % Engine Anti-freeze Water... -
Page 18: Torque Settings
SD64 4X4X4 Service Manual Torque settings Bolt quality/size Tightening torque in Nm (lbf·ft) Plated Unplated Grade 10.9 12.9 10.9 12.9 7 (5) 10 (8) 12 (9) 8 (6) 11 (8) 13 (10) 17 (13) 25 (18) 29 (22) 19 (14) 27 (20) 32 (23) 34 (25) -
Page 19: Hydraulic Hose And Fitting Torque Specifications
SD64 4X4X4 Service Manual Hydraulic hose and fitting torque specifications BSP (Solid Black Nut) Soft Seal Positional/Banjo/Block Fittings O-Ring Seal Female (ISO 8434) (ISO 6149 & 1179) Size Thread Torque Nm (lbf·ft) Size Thread Torque Nm (lbf·ft) 1/4” - 19 25 (18) 1/4”... - Page 20 SD64 4X4X4 Service Manual Metric (S-Series) Soft Seal Positional/Banjo/Block Elastomeric Seal Male (9974/3869) Fittings (ISO 6149 & 1179) Torque Nm (lbf·ft) Thread Torque Nm (lbf·ft) Thread Steel Aluminium M12 X 1.5 35 (26) M12 X 1.5 40 (30) 20 (15) M14 X 1.5 45 (33) M14 X 1.5...
- Page 21 SD64 4X4X4 Service Manual UNF bolts Dowty Seal Positional / Banjo Bolts Size Thread Torque Nm (lbf·ft) 1/4” - 19 40 (30) 3/8” - 19 75 (55) Dowty Seal 9/16” - 18 40 (30) Positional/Banjo English US 10/20...
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Page 22: Preventative Maintenance
SD64 4X4X4 Service Manual Preventative maintenance Maintenance schedules 3.1.1 Engine maintenance Maintenance is required at periodic or hourly intervals. The total active, booms active, and drive active hours are displayed in the menu screen on the basket and ground display units. Operation Engine Oil ●... -
Page 23: Machine Maintenance
SD64 4X4X4 Service Manual 3.1.2 Machine maintenance Operation Gearbox Oil ● ● Battery condition ▲ Hydraulic oil level ▲ Return filter ▲ Pressure filter ▲ Hydraulic oil and filters ● ● Telescopic boom wear pads ▲ Hose Trunking and Energy Chain ▲... -
Page 24: Consumables
SD64 4X4X4 Service Manual Consumables Consumable items required for maintenance can be found in Table 1. Table 1: Consumables Type Detail Frequency Engine oil 10W30 / 15W40 Engine oil filter Spin on filter See section 3.1.1 Diesel fuel filter Cartridge or filter element Engine coolant Antifreeze Hydraulic oil... -
Page 25: Data, Safety And Specification
SD64 4X4X4 Service Manual 3.2.1 Data, safety and specification Data, safety and specification details are listed in Table 2. Table 2: Data and Specification Type Detail Number Hydraulic oil ISO VG 46 Hogarth 46.pdf White grease Renolit CZ2 RENOLIT CZ 2_sds.pdf Black EP grease Multis MS 2 msds.pdf... -
Page 26: Engine
SD64 4X4X4 Service Manual Engine 3.3.1 Power tray Certain procedures require the engine power tray to be swung away from the superstructure. Never start the engine without the power tray retaining bolt installed. THE POWER TRAY RETAINING BOLT MUST BE INSTALLED AND WARNING TIGHTENED TO THE SPECIFIED TORQUE BEFORE STARTING THE ENGINE. -
Page 27: Engine Oil Level Check
SD64 4X4X4 Service Manual 3.3.2 Engine oil level check 1) Check with the Niftylift on level surface before starting or more than 5 minutes after stopping the engine. 2) Remove oil level dipstick (1) and wipe clean. 3) Insert dipstick and remove to check oil level. 4) If low, add correct specification oil to the oil filling port (2) until the upper limit of the dipstick is reached. -
Page 28: Engine Oil Replace
SD64 4X4X4 Service Manual 3.3.3 Engine oil replace ONLY CARRY OUT THIS PROCEDURE WITH THE ENGINE OFF AND CAUTION COOLED. WHEN DRAINING ENGINE OIL, PLACE A CONTAINER UNDERNEATH THE NOTICE ENGINE AND DISPOSE ACCORDING TO LOCAL REGULATIONS. 1) Remove the drain plug located on the engine oil sump and drain the oil into a suitable container. Note; This will be easier if the oil is warm. -
Page 29: Engine Coolant Level Check
SD64 4X4X4 Service Manual 3.3.5 Engine coolant level check DO NOT STOP ENGINE SUDDENLY, IDLE ENGINE FOR 5 MINUTES BEFORE NOTICE STOPPING. WORK SHOULD BE CARRIED OUT AFTER LETTING THE ENGINE AND RADIATOR COOL OFF COMPLETELY (A MINIMUM OF 30 MINUTES AFTER STOPPING ENGINE). -
Page 30: Engine Coolant Replace
SD64 4X4X4 Service Manual 3.3.6 Engine coolant replace DO NOT STOP ENGINE SUDDENLY, IDLE ENGINE FOR 5 MINUTES BEFORE NOTICE STOPPING. WORK SHOULD BE CARRIED OUT AFTER LETTING THE ENGINE AND RADIATOR COOL OFF COMPLETELY (A MINIMUM OF 30 MINUTES AFTER STOPPING ENGINE). -
Page 31: Coolant Hoses And Clamp Bands Check
SD64 4X4X4 Service Manual 3.3.7 Coolant hoses and clamp bands check BE SURE TO CHECK RADIATOR HOSES AND CLAMPS PERIODICALLY. IF CAUTION RADIATOR HOSE IS DAMAGED OR COOLANT LEAKS, OVERHEATING OR SEVERE BURNS MAY OCCUR. 1) Check radiator hoses are securely fixed every 200 hours of operation or 6 months, whichever comes first. -
Page 32: Air Filter Element Maintenance
SD64 4X4X4 Service Manual 3.3.9 Air filter element maintenance DO NOT APPLY OIL TO THE AIR FILTER; YOUR NIFTYLIFT IS FITTED WITH NOTICE A DRY TYPE AIR FILTER. AVOID TOUCHING THE ELEMENT EXCEPT WHEN CLEANING. 1) Open the evacuator valve (1) once a week under ordinary conditions, daily when used in a dust rich environment. -
Page 33: 3.3.11 Fuel Filter Replace
SD64 4X4X4 Service Manual 3.3.11 Fuel filter replace FUEL ESCAPE - PLACE A SUITABLE CONTAINER UNDERNEATH THE WORK WARNING AREA AND DISPOSE FUEL ACCORDING TO LOCAL REGULATIONS. 1) Locate the fuel filter on the side of the engine and clamp both the fuel pipes on the filter housing. 2) Using a filter wrench or strap, remove the fuel filter (1). -
Page 34: 3.3.13 Exhaust System Inspect
SD64 4X4X4 Service Manual 3.3.13 Exhaust system inspect ONLY CARRY OUT THIS PROCEDURE WITH THE ENGINE SWITCHED OFF CAUTION AND COOLED DOWN. BEWARE OF HOT ENGINE COMPONENTS. THE POWER TRAY RETAINING BOLT MUST BE INSTALLED AND WARNING TIGHTENED TO THE SPECIFIED TORQUE BEFORE STARTING THE ENGINE. 1) Open the Engine (right hand) canopy. -
Page 35: Base Assembly
SD64 4X4X4 Service Manual Base assembly 3.4.1 Tire condition check Tires should be checked every week. Worn or defective tires can impair safety and machine handling. Check the tires have sufficient tread and there are no cuts, bulges, abrasions or damage to the tire tread and sidewall. -
Page 36: Drive Hub Gearbox
SD64 4X4X4 Service Manual Drive hub gearbox 3.5.1 Oil replace WHEN DRAINING OIL, PLACE A SUITABLE CONTAINER UNDERNEATH THE NOTICE GEARBOX AND DISPOSE ACCORDING TO LOCAL REGULATIONS. 1) Manufacturer’s specifications require this procedure to be carried out after the first 50 hours, then every 2500 hours or once a year. -
Page 37: Batteries
SD64 4X4X4 Service Manual Batteries MAKE SURE SUITABLE EYE PROTECTION AND CLOTHING ARE WORN WARNING WHEN MAINTAINING THE BATTERIES. MAKE SURE THERE IS ADEQUATE VENTILATION WHEN CARRYING OUT MAINTENANCE ON THE BATTERIES. CONTACT WITH CONCENTRATED SULFURIC ACID RESULTS IN RAPID WARNING DESTRUCTION OF BODY TISSUE VIA BURNS. -
Page 38: Pressure Filter Check (Weekly)
SD64 4X4X4 Service Manual 3.7.3 Pressure filter check (weekly) With the Niftylift running and the oil temperature at 40°C (104°F), observe the pressure filter condition indicator (located on the rear of the power tray). If visual indicator is red, the respective pressure filter element should be replaced once the oil has cooled sufficiently. - Page 39 SD64 4X4X4 Service Manual Suction filter 7) Open the engine (right hand) canopy and place a suitable container underneath the suction filter. 8) Using a filter wrench or strap, remove suction filter (1). 9) Replace suction filter, apply a film of oil to the seal of the filter.
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Page 40: Telescopic Boom
SD64 4X4X4 Service Manual Telescopic boom 3.8.1 Wear pad check (monthly) 1) With the links down and the telescope boom fully retracted, check that there are no loose, missing, or defective components in the superstructure end of the telescope boom. This includes wear pads, shims, spacers and fasteners. -
Page 41: Boom Pivot Pin Check (Daily)
SD64 4X4X4 Service Manual 3.8.3 Boom pivot pin check (daily) Check the respective locking device on each boom pivot pin is installed and secure. 3.8.4 Boom pivot bushes lubricate (yearly) At yearly intervals lubricate all DU pivot bushes (1) on the Fly boom, Links and Telescope assemblies. SCALE 1.000 Use a dry PTFE aerosol lubricant spray. -
Page 42: Boom Rotation Gear
SD64 4X4X4 Service Manual Boom rotation gear 3.9.1 Rotation gear engagement check (monthly) 1) Check the play between the rotation ring and pinion. 2) With the telescope boom fully extended, manually push the booms from side-to-side. A small amount of play is permissible. 3) Inspect the rotation ring for signs of uneven wear, damage or missing teeth. -
Page 43: Rotation Ring Lubrication (Monthly)
SD64 4X4X4 Service Manual 3.9.2 Rotation ring lubrication (monthly) DO NOT CARRY OUT THIS PROCEDURE WHILST THE ENGINE IS RUNNING. CAUTION 1) Two grease nipples (1) are located 180° apart on the inner rotation ring. 2) Connect a flexi-end grease gun up through the base to the grease nipple. 3) Pump the grease gun two to three times as required. -
Page 44: Repair Procedures
SD64 4X4X4 Service Manual Repair procedures General 4.1.1 Fuses The main replaceable fuses on the Niftylift are as follows: • 125A - Battery Power Circuit, • 125A - Diesel Engine Starter Motor and Alternator. Prior to the replacement of any fuse, determine the cause of the fault. Do not replace the fuse until the cause of the fault has been remedied. -
Page 45: Platform/Basket
SD64 4X4X4 Service Manual Platform/basket 4.2.1 Footswitch - contact switch replace The footswitch is used to provide power to the Niftylift controls. Remove 1) Isolate Niftylift from power supply. (See section 1.5.4). 2) Remove bolts (1) and (2) and remove the footswitch cover and rubber gasket. -
Page 46: Booms
SD64 4X4X4 Service Manual Booms Booms are safety critical components, please contact your nearest Niftylift approved dealer for further information. 4.3.1 Energy chain link One of two types of energy chain may be installed, please follow the respective instructions below. Remove 1) Operate telescopic boom to access the worn or damaged link. -
Page 47: Power Tray
SD64 4X4X4 Service Manual Power tray 4.4.1 Exhaust ONLY CARRY OUT THIS PROCEDURE WITH THE ENGINE OFF AND COOLED. CAUTION THE POWER TRAY RETAINING BOLT MUST BE INSTALLED AND TIGHTENED WARNING TO THE SPECIFIED TORQUE BEFORE STARTING THE ENGINE. Remove 1) Open the Engine (right hand) canopy. -
Page 48: Fan Belt
SD64 4X4X4 Service Manual 4.4.2 Fan belt ONLY CARRY OUT THIS PROCEDURE WITH THE ENGINE OFF AND CAUTION COOLED. THE POWER TRAY RETAINING BOLT MUST BE INSTALLED AND WARNING TIGHTENED TO THE SPECIFIED TORQUE BEFORE STARTING THE ENGINE. Remove 1) Open the Engine (right hand) canopy. 2) Remove the power tray retaining bolt. -
Page 49: Throttle Solenoid
SD64 4X4X4 Service Manual 4.4.3 Throttle solenoid ONLY CARRY OUT THIS PROCEDURE WITH THE ENGINE OFF AND COOLED. CAUTION BEWARE HOT ENGINE COMPONENTS. Remove 1) Open the Engine (right hand) canopy. 2) Isolate Niftylift from power supply. (See section 1.5.4). 3) Record measurement A. -
Page 50: Base Assembly
SD64 4X4X4 Service Manual Base assembly 4.5.1 Steer cylinders MAKE SURE SUITABLE EYE PROTECTION AND CLOTHING ARE WORN WARNING WHEN OPENING THE HYDRAULIC CIRCUIT. RISK OF BURNS - ALLOW THE HYDRAULIC OIL SUFFICIENT TIME TO CAUTION COOL BEFORE DRAINING. PLACE A SUITABLE CONTAINER UNDERNEATH THE WORK AREA AND NOTICE DISPOSE OIL ACCORDING TO LOCAL REGULATIONS. - Page 51 SD64 4X4X4 Service Manual 14) From underneath the base, remove 2 bolts (1), 2 washers and 2 nuts from the track rods. 15) Remove steer cylinder and connected hoses. 16) Observe the position of the hydraulic hoses and disconnect from the steer cylinder. 17) Remove the wear pads (2) from the steer cylinder.
- Page 52 SD64 4X4X4 Service Manual 28) Remove container from underneath the respective valve block and dispose of any oil in accordance with local regulations. 29) Close the control (left hand) canopy. 30) Operate the machine and check hydraulic system until oil temperature reaches 40°C (104°F). Check operation and inspect for leaks.
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Page 53: Shock Absorber
SD64 4X4X4 Service Manual 4.5.2 Shock absorber Shock absorbers should be checked for damage, leaks and correct damping operation. Replace as necessary. Remove 1) Ensure the Niftylift is in its stowed position. 2) Center the steering so wheels point straight ahead. - Page 54 SD64 4X4X4 Service Manual 12) Remove the upper suspension cup (7) and retain shim (8) x1 on front suspension or x3 on rear suspension. 13) Remove the coil spring (9). 14) Remove lower bolt and 2 washers; discard the Nyloc nut. 15) Remove the shock absorber (10).
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Page 55: Stabilizer Microswitch
SD64 4X4X4 Service Manual 4.5.3 Stabilizer microswitch Remove 1) Ensure the Niftylift is in its stowed position. 2) Lower the stabilizer to mid position. 3) Place a suitable support underneath the stabilizer foot. 4) Isolate Niftylift from power supply. (See section 1.5.4). 5) Cut the cable tie (1) to release the wiring harness. - Page 56 SD64 4X4X4 Service Manual 10) Loosen gland (4). 11) Undo bolts (5) and remove switch. 12) Remove front cover (6). 13) Record the position and disconnect four wires. 14) Withdraw wiring from switch. Install 15) Insert wiring into switch. 16) Connect wiring to switch terminals as observed in step 13.
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Page 57: System Overview
SD64 4X4X4 Service Manual System Overview Power system The main hardware for this system consists of the following: (1) 25kW Kubota V1505 Diesel engine (2) Drive Hub and Flange (3) 250 bar (3626 psi) 45cc Swash Pump (4) 16cc Engine Gear Pump. English US 10/20... -
Page 58: Boom System
SD64 4X4X4 Service Manual Boom system 5.2.1 Booms valve The boom control valve contains the ON/OFF solenoid and Pressure Reduction Valve (PRV) for the boom controls. 5.2.2 Boom switches Mounted on the tele-knuckle and the booms down/centralising post located on the top of the base, and operated by any of the booms raising and/or the telescopic boom extending, these switches control both the operation of the Tilt Alarm Sensor, and the drive speed control function. -
Page 59: Hydraulic System Overview
SD64 4X4X4 Service Manual Hydraulic system overview A simplified version of the hydraulic system is shown below in block diagram format. Brief descriptions of the operation of individual blocks are given below. Component details, valve arrangement and connections are shown in the hydraulic schematics. Please refer to the hydraulic schematics in conjunction with the electric schematics listed in “Technical Documents”... -
Page 60: Hydraulic Pumps
SD64 4X4X4 Service Manual Hydraulic pumps The Niftylift is equipped with two hydraulic pumps. The first, a variable displacement (swash) pump and the second a fixed displacement engine (gear) pump. See Pump Specifications table for information. Pump Specifications Swash Pump Engine Pump 45cc Variable Displacement Pump 16cc Triple body, aluminum, external gear... -
Page 61: Electrical Control System Overview
SD64 4X4X4 Service Manual Electrical control system overview CAGE USER INPUTS CAGE CAGE CONTROL SiOPS WEIGH SAFETY INPUTS BASE USER BASE ENGINE INPUTS CONTROL SUPPLY OUTPUTS VALVES 5.10 Control logic Component level details and connections are provided in the Electric Schematics listed in Table 1.2, “Technical Documents,”... -
Page 62: Troubleshooting Guide
SD64 4X4X4 Service Manual Troubleshooting guide Troubleshooting information This guide is designed to help identify and rectify faults more easily. Known faults are listed below. Your specific Niftylift fault may not be listed here, if not please contact your local Niftylift approved dealer in order for the guide to be continually improved and updated. -
Page 63: Engine Fault Finding
SD64 4X4X4 Service Manual Engine fault finding Problem Solution Cause / Test Check the fuel tank and fuel filter. Remove water, dirt and other impurities Fuel is thick and doesn't flow As all fuel will be filtered by the filter, if there should be water or other foreign matters on the filter, clean the filter with diesel If air is in the fuel filter or injection lines, the fuel pump will not work properly. - Page 64 SD64 4X4X4 Service Manual Problem Solution Cause / Test Clean orifice and needle valve, being careful not to damage the Carbon stuck around orifice nozzle orifice of injection nozzle piece Check nozzle for condition. Replace if necessary Bad valve or excessive wear of rings, pistons and liners cause Inadequate compression.
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Page 65: Gearbox Fault Finding
SD64 4X4X4 Service Manual Gearbox fault finding Problem Solution Cause / Test Hardening of the seals due to Clean area and check for leakage after a few days prolonged storage Oil leakage from seals Seals damaged or worn Contact a Niftylift approved service center Too much lubricant Check oil level (See section 3.5.1) Wheel gear is not correctly...