Property of American Airlines

Transcription

1 Vestergaard - VTS ON 1973 (1-4) American Airlines

2 MAINTENANE 4.1 MAINTENANE The following are comments to the schematic maintenance program presented in the end of this chapter. 1. BASI UNIT 1.2 leaning of hydraulic tank At least once a year the hydraulic tank must be cleaned and rinsed thoroughly. 1.3 Hydraulic filters ( ) At least once a year, filters H19 and H41 must be exchanged. 1.4 Hydraulic system - overall check - heck the hydraulic system for leakages daily. To be able to locate any leakage, for example at connections and couplings, keep all hoses, pipes, valves and cylinders constantly clean. This is to ensure the operationality of the hydraulic system. 1.6 Inspection of fluid tank At least once a year the fluid tank should be inspected thoroughly. 1.9 heck of fluid counter (M) 1. To check the fluid counter, use automatic servicing and spray into reservoir. 2. When water flows out of the hose, press STOP and reset. By that there will be no return suction. 3. rosscheck the amount of fluid in the reservoir and the amount indicated on the fluid counter at start. For more information, we refer to the special instructions heck of pumpsm ( ) When servicing the fluid pump, follow the special instructions. This is to ensure the operationality of the fluid system Fluid system - overall check - heck the fluid system for leakages daily. To be able to locate any leakage, for example at connections and couplings, keep all hoses, pipes and valves constantly clean. The cleaning includes as well the inside as the outside of the fluid system Inspection of waste tank At least once a year the waste tank ought to be inspected thoroughly. The inspection can be done by entering the tank through the manhole. 4.1 PAGE 1 / 4

3 MAINTENANE 1.19 Vacuum pump ( ) Flush vacuum pump every day - see chapter 2, section 2.13, leaning, for description Waste system - overall check - heck the waste system for leakages daily. To be able to locate any leakage, for example at connections and couplings, keep all hoses, pipes and valves constantly clean. The cleaning includes as well the inside as the outside of the waste system Vacuum check valve F192 ( ) In order to ensure an optimum of vacuum in the tank during servicing, the vacuum valve must be inspected and cleaned every day. - Open manhole cover F40 to access the vacuum valve. We recommend that you verify the vacuum after inspection and cleaning - 0,25 bar should be created when in operation. Refer also to section 1.19 for daily flushing of the vacuum pump Option not chosen 2. HASSIS 2.1 hassis - overall check Service on the chassis is to be carried out in accordance with the manufacturer s recommendations. However, it must be noticed that this kind of operation is very unusual (few kilometres of driving, but many working hours with the engine running idle), and the maintenance procedure must be adapted accordingly. To increase serviceability/lifetime of the chassis and due to the environment the unit works in, we recommend that a yearly complete paint/corrosion inspection is done on chassis parts like framework, springs, stabilizers, axles, engine, air system etc. including bolts/nuts. Should any parts show signs of missing paint or beginning corrosion, we recommend that the parts are thoroughly cleaned and repainted/retreated against corrosion to avoid corrosion to develop. 3. FLUID SYSTEM Property of American Airlines 4.1 PAGE 2 / 4

4 MAINTENANE 4. HEATING SYSTEM () Fuel heating system () (M) The fuel heating system protects the machine room and the tanks against freezing during operation of the unit. The fuel heater has a fixed setpoint and starts up if the temperature in the machine room drops below approx. +10 (an the chassis ignition is on). This fixed setpoint is given through a 1.8 kohm resistor mounted in the electrical panel. For testing the fuel heater a 2.15 kohm test resistor is mounted, too. When this restistor is used as setpoint, the fuel heater will start up if the temperature in the machine room drops below approx If, for some reason, the fuel heater does not start up, check also the circuit breakers Option not chosen Option not chosen harger for truck battery () Battery charger: - heck the function Option not chosen Option not chosen 5. OPTIONS () Elevating platform () As specified int the maintenance charts, the lifting system must be inspected throughly both with regard to construction elements, welding and the hydraulic components. Further the tightening of all bolts and nuts must be checked as specified. For service and maintenance instructions, please refer to special instructions in chapter PAGE 3 / 4

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6 MAINTENANE HARTS 4.2 MAINTENANE HARTS For more detailed maintenance information, see chapter 4-1. Service intervals have been organized in the following groups: Service intervals A B After working hours or every Day 3 months year Service codes are as follows: Service code Lubricants to be used when performing the service: E L A l heck Service to be done Exchange Lubricate/Replenish Adjust lean Lubricants No. Recommended type Article no. Alternative 1 Nulon LEP Statoil Greaseway ah 92 or Shell Albida EP2 ( ) 2 Texaco Rando HD Statoil Hydraway HM32 Shell Tellus S 32 Elf Elfolna DS 32 astrol Hyspin AWS 32 Agip OSO 32 ESSO Univis N32 2 ESSO Univis HVI Shell Tellus Arctic ( ) 3 SAE 15W opper paste PB Grade SAE 20W PAGE 1 / 4

7 MAINTENANE HARTS Maintenance of VTS A B Type X 1. BASI 1.1 ( ) ( ) Level check of hydraulic oil. Renew oil every 2nd year leaning of hydraulic tank Hydraulic filters H19 and H41 Hydraulic fittings, valves, and pipes Pumps and motors H1+H2+H3+H4+H26 Fluid tank, Inspection Manhole covers F39 and F40 Bearings of hose reel, F34, heck fluid flow indicator / fluid counter heck fluid pressure: F13 and F14 -L -L E--l 2 I l l E See special instructions L L 1 L L 1 -A -A Filters F18 l l Pumps F2+F3+F42 Fluid fittings, valves, pipes,tank See special instructions l l heck all functions on operation panel 1.17 Door hinges L L Waste tank, inspection 1.19 ( ) Vacuum pump, F1 l 4.2 PAGE 2 / 4

8 MAINTENANE HARTS Maintenance of VTS A B Type X 1.20 Waste fittings, valves, pipes, tank I I 1.21 Manhole cover, F40 L L ( ) HASSIS 3. FLUID HEATING () () Vacuum check valve, F192 Option not chosen HASSIS Maintenance of chassis Oil level in chassis engine Type to be specified by manufacturer hassis engine - coolant level Type: Original coolant/ liquid Tyre: Pressure: General conditions. Pressure (see chassis specification) Fuel heating system Option not chosen I-A I-A I-A See manual for chassis -L -L -L -L -L -L -L -L -L () Option not chosen () () Battery charger and engine heater Option not chosen Option not chosen 4.2 PAGE 3 / 4

9 MAINTENANE HARTS Maintenance of VTS A B Type X 5. OPTIONS () Elevating platform -A ( ) Immobilizer 4.2 PAGE 4 / 4

10 ADJUSTMENTS 4.3 ADJUSTMENTS ADJUSTMENT OF HYDRAULI SYSTEM ( ) Adjustment of hydraulic pressure and flow: ( ) (M) heck and adjustment of hydraulic presure: - Mount presure gauge in H85. - Activate lift down in platform (keep activating until fully down) - Keep activation lift down. Adjust H9 to 180 bar. - Remove pressure gauge in H85 heck and adjustment of hydraulic flow: - Activate degerm pump in platform; - Adjust H31so that F2 rotates with 3300 ± 200 rev/min ADJUSTMENT OF DEGERM SYSTEM ( ) (M) Speed Tolerance Adjust on: Rev. of degerm pump (3300 rpm) ±200 rpm H31 - Adjust maximum pressure of the individual pumps according to the diagram. Pressure adjustment procedure is as follows: - Mount a coupling counter part with a ball valve on F41. - Engage degerm pump in platform. - lose ball valve on counter part slowly. - Read actual pressure on F19. - Adjust F13 to pressure indicated in fluid diagram. - Disengage degerm pump, open ball valve to release water pressure and dismount coupling counter part OPTION NOT HOSEN PAGE 1 / 2

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