Removal components
Before removing a component, clean the area where it is installed.
- Close the holes created when removing the component with process plugs.
- To prevent fluid leakage and foreign particles from entering the system, immediately cap the ends of the fuel, oil, and hydraulic lines disconnected during component removal. Plastic caps or plugs are suitable for this purpose.
- Close the open ends of the oil passages with wedge-shaped, wooden plugs or clearly visible plastic stoppers.
- Immediately after removing the component, place it in the appropriate container; use an individual container (tray) to store the removed component and the parts removed from it.
- Before removing a component, prepare a work area for disassembling it, a container for storing it, and markers or stickers for labeling it.
Disassembly
Maintain extreme cleanliness in the workplace. This requirement must be strictly observed when working with brake, fuel or hydraulic system components. Particles of dirt or cleaning rags can cause serious damage if they get inside these systems.
- Blow out all internal cavities, crevices, oil passages and fuel passages with compressed air. Replace any rubber O-rings damaged during disassembly.
- Mark the mating surfaces with paint to ensure correct assembly of the unit. Do not use a scriber or cutter for this purpose - mechanical impacts may cause cracks or damage parts.
- Wire the mating parts together. This will prevent incorrect assembly. (for example roller bearing components).
- Attach tags with wire to parts that need to be replaced with new ones, as well as to parts that need to undergo defect detection. Keep these parts separate from parts suitable for reassembly.
- Never dispose of components until new parts are purchased. Only after making sure that they are identical can you dispose of the old part.
Detergents
Use only recommended cleaning agents or equivalent substitutes to clean parts. If volatile substances are used for cleaning, ensure that the work area is effectively ventilated. If the units contain components that may be damaged by the action of cleaning agents, their use should be avoided.
The text of the article was taken from the website [lrman.ru]
Inspection
Before reassembly, all components must be carefully inspected for signs of wear and damage.
- Inspection of components should only be carried out after they have been thoroughly washed. Even minor oil stains may hide emerging defects.
- If it is necessary to measure the dimensions of a part in order to compare its dimensions with the permissible ones, then the appropriate measuring tool should be used. (johansen tiles, micrometers, dial indicators). Make sure that the measuring tool and fixtures are checked and in good condition.
- If the dimensions of a part are outside the maximum permissible values or the part shows signs of damage, it is subject to rejection.
- The part is considered suitable for reinstallation if its dimensions are within the specified tolerances and it shows no signs of damage. To measure the clearance in plain bearings, use the 'Plastigauge' 12, type PG-1 device.
Comments on this article