Manitowoc GHC75 Maintenance Instructions Manual
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Manitowoc GHC75 Maintenance Instructions Manual

Telescopic crane
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Crane Care
Maintenance instructions
GHC75
Telescopic crane
Preliminary
Version: 1.0
Read this manual prior to performing any task!

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Summary of Contents for Manitowoc GHC75

  • Page 1 Crane Care Maintenance instructions GHC75 Telescopic crane Preliminary Version: 1.0 Read this manual prior to performing any task!
  • Page 2 GHC, 3, en_US Preliminary © 2017 GHC75 Telescopic crane 21.12.2017...
  • Page 3 Grove alebo priamo spoločnosť Grove Maschinen- fabrik GmbH. Če jezika navodil za uporabo ne bi razumeli, stroja ne smete dajati v obratovanje. Po potrebi se obrnite na svojega regionalnega prodajalca z izdelki Grove. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 4 Spare parts and accessories authorized by the manufacturer. Grove will not be held responsible for any parts or accessory products that have not been approved. Other applicable documents Hydraulic diagram Electrical diagram Spare parts catalog Copyright ©2017Grove Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 5: Table Of Contents

    5.8 Checking the air intake system........53 5.9 Check the V-ribbed belt drive........53 5.10 Exhaust after-treatment system........ 54 5.10.1 Change and/or clean the DEF dosing unit filter..54 5.10.2 Visual check of the exhaust after-treatment system for damage, leaks........55 Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 6 10.1 Hydraulic hose lines..........90 10.2 Bleed hydraulic pumps..........90 10.3 Depressurizing the hydraulic system......91 10.4 Change hydraulic leakage oil filter......91 10.5 Change the hydraulic oil return filter......93 10.6 Change hydraulic hoses........... 94 Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 7 12.1 Check the oil level of the winch gear...... 104 12.2 Change the winch gear oil........104 12.3 Maintaining the brake..........105 Static load-bearing steel components......106 13.1 Checking static load-bearing parts and steel compo- nents for damage............ 106 Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 8: Maintenance Schedule

    (bolts, cotter pins, etc.). Visual inspection of all straps: Fastening, lubrication and wear Wire cable: uncoil and then coil up again under sufficient ten- sion After 100 OH at the latest, then every 100 OH Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 9 After 50-100 OH, then every 50-100 OH/monthly Slewing gear: clean oil filter After 250 OH/6 weeks, then monthly Slewing gear: Lubrication After 250 OH/6 weeks, then every 150-200 OH/weekly Check and clean hydraulic oil cooler. Check and clean combina- tion cooler Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 10 Visually check for leaks Check antifreeze. All winches: lubricate bearing bushes. Both crawler gearboxes: Check oil level and check for leaks. Crawler track: check the chain tension. Sprocket: check bolts for firm seat using appropriate means. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 11 Return filter: replace filter element Leakage oil filter replace filter element Ventilation filter: replace filter element Hoisting winches: change oil. Both travel gears: Change oil After 250 OH/6 weeks, then every 2000 OH/yearly Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 12 Testing the slew ring bolts must be performed by an expert from an independent specialist company / an independent institute. Unrestricted further use of the slewing ring bolts must be verified with a certificate. Otherwise, replace the slewing ring screws! Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 13: Safety

    Conduct a function check to ensure faultless operation. Do not introduce operating fluids to the environment, and dis- pose of used operating fluids in an environmentally-friendly manner. Only the crane owner or his representative may release the machine following maintenance tasks. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 14: Symbols In The Manual

    Possible danger zones include: Areas in which persons can be struck by the slewing motions of the machine. Areas in which persons can be injured by the machine moving, rolling or tipping over. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 15: Personal Protective Equipment

    At working heights above 3.00 m, using a fall arrest safety harness is a legal requirement. Hearing protection Hearing protection protects against hearing loss due to noise. Fig. 3: Hearing protection Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 16 Fig. 7: Safety shoes Restraining system The restraining system secures the operator in his seat and serves to reduce the consequences of an accident for the operator. 201702280950 Fig. 8: Restraining system Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 17: Environmental Protection

    They must not be introduced to the environment. Disposal must be carried out by a specialist disposal company. Diesel fuel Diesel fuel contains poisonous substances. It must not be intro- duced to the environment. Disposal must be carried out by a spe- cialist disposal company. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 18: Machine

    Paint damage can be caused by external factors or cracks and deformations in the steel structure. Protective equipment: Protective clothing Protective gloves Safety shoes Hard hat Park the machine. Secure the machine against being restarted without authori- zation. Inspect all accessible painted surfaces for damage. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 19 Protective clothing Protective gloves Safety shoes Hard hat Inspect all attachments, access ladders, walkways, railings of the uppercarriage and tools for proper mounting and damage. ð Tighten or replace fasteners as needed. Replace damaged components. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 20: Basic Cleaning Of The Machine

    ð Recognize general damage and deformation. Document every visible change to the wire rope. 3.2 Basic cleaning of the machine Personnel Interval The machine operator Every 50 operating hours / weekly Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 21 Pay attention to the corrosivity class of the coating. – Check the corrosion protection and have touched up or restored as needed. – Check all lines for damage and leaks. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 22 Remove firmly adhering contamination with a sponge or brush. Rinse off the machine with clean water. Clean the cab windows and mirrors with a commercial glass cleaner. After cleaning works, carry out a visual and function check of the machine. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 23: Check And Lubricate The Manual Lubrication Stations

    Park the machine. Completely extend the outriggers. Extend the main boom. Fold in the main boom to 0°. It may be necessary here to switch to setup mode. Secure the machine against being restarted without authori- zation. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 24 Derricking cylinder, lower Output side winch bearing point Boom mounting Boom mounting Slewing ring, inner Slewing ring, inner Slewing ring, inner Slewing ring, inner Slewing ring, inner Slewing ring, inner Slewing ring, inner Slewing ring, inner Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 25 Remove the excess grease and dispose of it correctly. Remove the protective cap from the lubricating nipple, which is positioned in the front third of the main boom. Lubricate the lubricating nipple. ð The rear, upper sliding blocks are lubricated. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 26: Check Fill Level

    Apply a thin layer of lubricating grease with a brush. 3.4 Check fill level Personnel Interval The machine operator Every 10 OH / daily Once every 250 OH / approx. 4-6 weeks after commissioning Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 27 Slewing ring lubrication pump lubri- 1.2 l cant tank Windshield washer system tank Diesel fuel tank 200 l The filling quantity specifications are reference points. The fill levels shown on the respective part are authoritative. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 28 Too little or too much coolant can reduce the diesel engine performance and damage the diesel engine. Using the wrong coolant can damage the diesel engine. F & operating fluids list. Determine coolant level, Operating fluid, F & operating manual chapter: Appendix. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 29 5 %. Turn the ignition key to 0 position. Secure the machine against being restarted without authori- zation. Open the service flap. Check DEF tank for contamination and clean as needed. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 30 Too low or too high a hydraulic oil level can lead to reduced performance and to damage to the parts of the hydraulic system. The use of unsuitable or contaminated hydraulic oil can lead to damage to the parts of the hydraulic system. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 31 Completely retract all cylinders. Open the service flap. Check the hydraulic oil level on the sight glass. ð The hydraulic oil level must reach MAX on the sight glass. Add hydraulic oil as needed. Close the service door. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 32 The cycle for the automatic lubrication process is factory-set to one hour. If needed, additional lubrication processes can be introduced. The preset lubricating cycle can be shortened. Shorter intervals between lubri- cation are needed, Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 33 The pump may require up to 10 minutes following complete draining to reach full performance. Fill the central lubrication pump's container from above via the filling nipple or - if available - via the filling opening, up to the MAX marking. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 34 Windshield washer fluid Park the machine. Secure the machine against being restarted without authori- zation. Open the left service door. Check the windshield washer fluid reservoir level. Add washer fluid as needed. Close the service door. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 35: Welding

    Cover vulnerable components with fireproof material. Drilling and welding is prohibited on the following components: – Boom parts – Load-bearing frame parts – Engine – Hydraulic tank – Fuel tank – Fuel-carrying and oil-carrying components Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 36: Oils And Lubricants

    Environmentally friendly lubricants are mandatory especially in water conservation areas and nature reserves. Only synthetic, ester-based biolubricants may be used. See the list of operating fluids for more information. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 37: Coolant

    The concentration must be checked at the next oppor- tunity, at the latest however before temperatures reach freezing. The appropriate coolant must be added to protect against freezing and corrosion. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 38 Information The coolant must be changed if a routine check of the coolant level reveals the presence of lubricating oil or noticeable cloudiness. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 39 Replace the sealing cap on the expansion tank. Run the diesel engine at low idle for five minutes. Check the coolant level and add as needed. See the engine manufacturer's operating manual for change inter- Change intervals vals. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 40: Cab

    Turn the ignition key to I. Open the air nozzles. Switch on the blower. With the button, select the desired heating or cooling mode. Set the desired temperature using the temperature control. Check the internal temperature and blower performance. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 41: Cleaning The Recirculating Air Filter

    Replace the filter element if it has been damaged or it is too dirty. Insert the cleaned filter element or a new filter element into the filter cartridge. Information The arrows on the filter element must point toward the back of the cab. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 42: Cleaning The Fresh Air Filter

    Insert the cleaned filter element or a new filter element. The colored side of the filter element must point toward the interior of the cab. Close the cover. Close the cover closures with a screwdriver. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 43: Diesel Engine Service

    Observe applicable environmental standards for disposing of oil and oil filters. Information Observe the engine manufacturer's operating manual. Only mix the same type of or identical (same specification) oils, lubricants and operating fluids from the same manufacturer. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 44 Check the engine oil level Dipstick Oil filler neck Park the machine in horizontal position. Run engine for approximately 2 minutes until the system is filled with oil. Shut down the drive engine. Open rear right maintenance door. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 45: Changing The Engine Oil And Oil Filter

    – Never use compressed air to clean the interior of the housing. The condition of the air filter is monitored by the SENCON. When SENCON symbol air filter contaminated, the SENCON displays the following icon: Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 46: Change The Air Filter - Tier 4F

    Dust discharge valve 5.4.2 Change the air filter - Tier 4f Read through the safety information before starting work. Information – Replace the main filter during every cleaning. – Replace the safety filter during every other cleaning. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 47: Cleaning The Air Filter Pre-Separator

    Open the locking clamps of the pre-separator cover (7). Carefully clean the pre-separator of the air filter with com- pressed air. Attach the air filter cover (7) using the locking clamps. Close the service door. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 48: Change Air Filter Cartridge

    Read through the safety information before starting work. Air filter cover Locking clamps (3 each) replacement cartridge Handle safety cartridge Nose Open the locking clamps (2) of the air filter cover (1) and remove the air filter cover. Remove replacement cartridge (3). Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 49: Check And Clean Combination Cooler

    (maximum 2 bar). Radiator If contaminated with grease and oil, clean the radiator fins Expansion tank using cold-cleaning agent and a steam cleaner. Sealing cap Check radiator for leaks and damaged cooling fins. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 50: Diesel Pre-Filter

    24 months. Whichever comes first. – Also comply with the additional instructions, "Cleaning the cooler", see Appendix, Chapter 11.6 CLEANING THE COOLER. 5.6 Diesel pre-filter Service door Housing of filter cartridge Vent screw Drain valve Screw cap Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 51 Drain water and contamination from the water container until fuel flows out. Close the drain valve (4). Unscrew the screw cap (5) from the housing (2) and pull out the filter element that is fastened to it. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 52 Screw the screw cap (5) with new filter element into the housing (2) to the stop. Ensure tightening torque is at 50 Nm (442.53 lbf in)! Dispose of old filter element and O-rings. Close the service door (1). Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 53: Diesel Fine Filter

    Switch off the machine and safeguard it against unauthorized restart before starting the tasks. Reinstall the protective covering after maintenance work. Information To check, tension and change the belt drives, refer to the directions in the operating instructions of the engine manufacturer. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 54: Exhaust After-Treatment System

    Take off the filter seal. Clean the filling filter with water. Replace the filter seal. Place the filling filter into the DEF tank opening. Screw the lock onto the DEF tank. Close the service door. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 55: Visual Check Of The Exhaust After-Treatment System For Damage, Leaks

    Close the left service door. 5.10.2 Visual check of the exhaust after-treatment system for damage, leaks Personnel Interval Service Technician Every 500 OH The machine operator Once every 250 OH / approx. 4-6 weeks after commissioning Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 56 In particular, carry out the fol- lowing visual checks. Visual check Particular features Visible soot discharge, particularly on Black substance the clips Visible DEF deposits® White substance Visible coolant deposits Greenish substance Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 57: Uppercarriage

    ð If the preload pressure is outside tolerance, replace the pressure accumulator or have it refilled with nitrogen. Remove the pressure gauge. Every 10 years/20,000 operating hours, arrange for a pressure test and an internal inspection of the pressure accumulator by a spe- cialist. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 58: Servicing Battery Connections

    Check terminals and cable connections of batteries: Switch over battery disconnect switch (1). Clean terminals and cable connections of batteries (2). Check for firm seat and grease with terminal grease. Return battery disconnect switch (1) to its initial position. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 59: Slewing Gear

    (same specifications) from one manu- facturer! 6.3.2 Check the slewing gear oil level Lower attached loads and the boom to the ground. Park the machine in horizontal position. Shut down drive engine and safeguard it from being restarted. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 60 (approximately quarter full mark on the oil expansion tank). The oil level can vary according to the oil temperature, up to a three-quarter filling is possible. Top up oil in accordance with specification if necessary. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 61: Change Slewing Gear Gear Oil

    Screw in connection piece with hose (4) until the waste oil drains through the hose. Collect used oil in a suitable con- tainer. Unscrew connection piece with hose (4). Screw cover nut (3) back on. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 62: Check The Slewing Gear Fastening Bolts

    Screw oil expansion tank (5) cover closed. Operate for 2 hours, then re-check the oil level. 6.4 Check the slewing gear fastening bolts Personnel Interval Service Technician Annually / every 2000 OH Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 63: Check Ballast Elements - Ballast Rods

    6.5 Check ballast elements - ballast rods Drive engine as per the description in Chapter: Turn off starting/stopping operation/diesel engine. Thoroughly clean the machine. Check the ballast elements for firm seat. If necessary, retighten all hex nuts on the ballast rods. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 64: Undercarriage

    Consequently the tension on both crawler tracks must be checked regularly to exclude the possibility disruption of operation. The sag value for the chain tension is 50 mm. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 65 Information Consistently correct tension of the crawler tracks increases the service life of the components of the undercarriage. In addition, the tension of the crawler tracks must be adjusted depending on the machine's operating conditions. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 66: Spring Tensioning Fixture - Adjusting The Chain Tension

    If the chain is tensioned too tight, loosen valve (F) slightly so that the excess lubricating grease escapes via the vent opening and chain loosens. Reattach cover (D), washers (C), and the screws B. Repeat the procedure on the opposite crawler track. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 67: Checking The Tightening Torque Of Base Plate Bolts

    If one or more base plates (B) must be replaced together with the corresponding bolts (C)- (D), then the bolts must be thoroughly lubricated and tightened to the values stated in column "lubricated". Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 68: Checking The Travel Drive Oil Level

    Place a container under the lubricating point plug. Slowly loosen the lubricating point plug until oil comes out of the threaded hole. If too much oil comes out, tighten the plug. If no oil comes out, add oil. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 69: Changing The Travel Drive Oil

    Loosen the closure for lubricating point (1) so the oil can flow out better. Loosen and remove the closure for lubricating point (2). Let the used oil drain completely. Tighten the closure of the lubricating point (2). Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 70: Check Crawler Chain Tension

    The track is properly tensioned when the sag measurement "X" in the middle of the track wheel carrier is at least 70 mm or at most 80 mm. Adjust the track tension as needed. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 71: Slewing Ring

    Secure the machine against being restarted without authori- zation. Check all fastening nuts on the slewing gear with a torque wrench, width xx mm, on firm ground, and tighten if neces- sary. Tightening torque = xx Nm Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 72: Tighten Slewing Ring Bolts

    Use a torque wrench to tighten the slewing ring bolts of the inner race (1) in a cross pattern, in accordance with the drawing. Use an extension for the torque wrench. If necessary drive over a pit. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 73: Measure Slewing Ring Backlash

    The slewing play must be measured in four upper carriage set- tings, each 90° apart. The first measurement is carried out in the direction of travel. Use a dial gage with a measuring preciseness of 0.01 mm. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 74 In the service after 8 000 operating hours, the value measured at measuring point 2 (3.9 mm) exceeds the sum of the reference value (0.6 mm) and the value of the maximum permissible increase in slewing ring play (3,2 mm). Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 75: Rotary Connection

    Rotate uppercarriage in both directions several times to dis- tribute the grease. Repeat the process until the rotary connection is completely filled with grease. Assembly / lubrication Number of lubricating nip- point ples Rotary connection Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 76: Slewing Ring Lubrication

    Check whether an uninterrupted film of lubricant is present. Repeat the lubrication process if necessary. Information Lubricate the slewing ring every 10 operating hours or daily (depending on operating conditions)! Check the lubricant tank weekly and top up lubricant if necessary! Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 77 Shut down machine and secure it against unauthorized restart before starting maintenance tasks. Attach warning sign on the operating elements. Remove the lubrication device (1). Checking the plastic skid (2) for wear (minimum 28mm). Replace the plastic skid if necessary. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 78 Crane Care Rotary connection > Slewing ring lubrication Adding grease Open cover (1). Add lubricant. Close the cap. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 79: Load Hoist Mechanism

    Screw tightening torque in Nm Quality 1350 10.9 1950 12.9 1150 2300 8.2 Check the limit switch on the winch Personnel Interval Service Technician Particular interval: every 100 OH Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 80: Check Securing Of The Winch Load Foot

    Hydraulic and/or pneumatic supply lines must be depressurized. Protective equipment: Safety shoes Protective gloves Protective clothing Special tool: Spanner Park the machine. Secure the machine against being restarted without authori- zation. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 81: Change Winch Gear Oil

    Do not stand underneath a suspended load. Checking the winch oil level If, when checking the winch gear's oil level, a continuous loss of oil is recorded, adjust the winch gear and resolve the cause of the leak. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 82 Observe the recommendations on the operating fluid list. Mixing operating fluids of different types and/or the use of unsuitable lubricants can cause machine damage. Protective equipment: Protective clothing Safety goggles Hard hat Safety shoes Hygiene protection gloves Fall arrest safety harness Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 83: Lubricate Winch Bearings

    With winches that have a hose on the oil release screw, unscrew the hose blind plugs and carry out the work steps analogously. 8.5 Lubricate winch bearings Personnel Interval Service Technician Every 6 months Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 84: Check The Splined Shaft Connection On The Winch

    Before start-up, check the winch to make sure that all protec- tion devices have been attached and are functioning. Do not stand underneath a suspended load. Secure the winch drive and additional equipment from uninten- tional start-up. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 85 Check the drive-side splined shaft connection. ð The involute spline connection should show no plastic deformation or abrasive wear. If damage can be seen on the involute spline connections, the affected parts must be replaced immediately. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 86: Rope

    Observe the valid manufacturer's instructions and stand- ards for the monitoring of rope end connections. Ropes that are used despite wear, overload, misuse, damage or incorrect maintenance, can malfunction. This can result in serious injury and even death. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 87 Table 1. If there is obvious damage, do not operate the winch until the deviations have been checked by staff trained in the operation, safety, and maintenance of this winch. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 88: Lubricate Rope

    – reduction of the rope diameter during oper- ating time 9.2 Lubricate rope Personnel Interval Service Technician Every 500 OH The machine operator Once every 250 OH / approx. 4-6 weeks after commissioning Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 89 Let the lubricant dry. – The lubricant solution drying time depends on the sur- rounding temperature. – Typical procedures for applying lubricant are lubrication via paintbrush, drop-lubrication, spray nozzle lubrication, and pressure lubrication. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 90: Hydraulic System

    Allen key, width 12 mm Lint-free cleaning cloth Park the machine on secure, even ground. Secure the machine against being restarted without authori- zation. Depressurize the hydraulic system. F Section Depressurizing the hydraulic system. Open the service flap. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 91: Depressurizing The Hydraulic System

    Open the aeration filter (/1) on the hydraulic oil tank. ð The preload pressure is removed. Close the aeration filter. Turn the ignition key to position 0. 10.4 Change hydraulic leakage oil filter Personnel Interval Service Technician Particular interval: during hydraulic oil change Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 92 Screw new filter element onto the return pipe. Insert the hydraulic leakage oil filter into the hydraulic oil tank. Secure leak oil filter with the four hex nuts. Connect the hose connections to the filter head. Screw on the aeration filter. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 93: Change The Hydraulic Oil Return Filter

    ð The pre-tension pressure is released from the hydraulic oil tank. Unscrew the four hex screws. Remove the filter cover from the filter head. If necessary, loosen the middle screw on the filter cover to remove the vacuum inside. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 94: Change Hydraulic Hoses

    Protective equipment: Protective clothing Protective gloves Safety goggles Lower the stick and the boom. Park the machine. Depressurize the hydraulic system. F Section Depressurizing the hydraulic system. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 95 Position 0. When dismantling a defective hydraulic hose, make sure that before opening the successful pressure release, the affected rope connection is checked once more; the threaded union between hose fitting and connection loosen without pressure. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 96 No tensile load due to short hose hydraulic hose length 00674 00673 No tensile load due to short hydraulic hose bend radius 00676 00675 Sufficient distance from neigh- hydraulic hose boring components 00678 00677 No torsion loading hydraulic hose 00681 00679 Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 97 00683 short of; 00684 Protection of loose-lying hydraulic hydraulic hose hoses using hose mounts; 00686 No unsealed places and leaks Hydraulic hose, hose fitting, con- nection 00687 00686 Pre-determined usage period not hydraulic hose exceeded Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 98: Change Hydraulic Oil Reservoir Aeration Filter

    After mounting the hydraulic hoses, check the machine's hydraulic system at maximum operating pressure. 10.7 Change hydraulic oil reservoir aeration filter Personnel Interval Service Technician annually / every 2000 OH Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 99: Change Hydroclean Or Auxiliary Control Filter Filter Element

    Open the aeration filter on the hydraulic oil tank. Close the aeration filter. Open the right service door. Remove the two hex screws. Unscrew the cover. Unscrew the filter cover. Use the handle to pull the filter element out of the filter casing. Preliminary 21.12.2017 GHC75 Telescopic crane...
  • Page 100 Secure the machine against being restarted without authori- zation. Open the right service door. Open the aeration filter on the hydraulic oil tank. Close the aeration filter. Unscrew the filter cover. Pull the filter element out of the filter casing. Preliminary GHC75 Telescopic crane 21.12.2017...
  • Page 101 Damp the screw thread and the O-ring in the filter cover with clean hydraulic oil. Screw on the filter cover until the stop and unscrew a quarter turn. Check the auxiliary control filter for leaks. Dispose of the used filter element as per regulations. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 102: Telescopic Boom

    Repeat the procedure at a boom extension of 35.1 m and at lubrication opening (1) to lubricate the third telescope sec- tion. Repeat the procedure at a boom extension of 34.7 m and at lubrication opening (2) to lubricate the second telescope sec- tion. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 103: Check Telescopic Boom

    The following parts of the telescopic boom must be checked yearly: Bearings Telescopic cylinder Sheaves Information If damage, such as cracks, dents, warping, deformation are sus- pected, contact GROVE Customer Service. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 104: Crane Winch

    Remove the closure of the oil filling (A). Fill with new gear oil until the level (B) is between the MIN and MAX markings. Reinstall the closure of the oil filling (A). Operate the winch. Check the oil level again. Preliminary GHC75 Telescopic crane 21.12.2017...

  • Page 105: Maintaining The Brake

    When replacing a seal, always replace all seals. The brake adjusts itself automatically. At higher pressures and higher activation frequency, small amounts of leak oil on the pis- tons are unavoidable. Preliminary 21.12.2017 GHC75 Telescopic crane...

  • Page 106: Static Load-Bearing Steel Components

    If damage is detected, check the components for structural damage by carrying out a dye penetrant test or magnetic par- ticle test. Involve a specialist for the examination, if necessary. Only trained and qualified specialists are authorized to exe- cute a repair. Preliminary GHC75 Telescopic crane 21.12.2017...

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