12.1.2. Service of assemblies of rotary fists
Removal and dismantling
Components of assembly of a rotary fist
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- Weaken nuts of a forward wheel.
- Car front also establish to Poddomkratta it on the props got under frame longerons. Remove a forward wheel.
- Remove a nave of a wheel and a power shaft.
- Remove the forelock and give a koronchaty nut of fastening of the spherical hinge(s) of a tip of steering draft (thirsts) for the rotary lever of a fist. Apply to an ear of the rotary lever a podboyka or baizes of the hammer and, tapping up to fish soup from the opposite side, beat out a hairpin (i) of the spherical hinge(s) from the lever.
- Give bolts of covers of the top and lower bearings and remove assemblies of covers with adjusting laying from a rotary fist. Mark covers and laying - at assembly they has to be established in former provisions.
- Give bolts of fastening of a guard of an epiploon. try to remember the adjusting provision of a lock bolt of turn and quantity of turns which was required for its reversing. Remove guards.
- Remove a rotary fist from a bridge case pin, then remove a basic ring, an epiploon and a mud-stripper.
- By means of a drift take from a pin of the bridge of a cup of the top and lower bearings and a stopper.
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Cleaning and check of a condition of components
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- Wash out all components, except for epiploons, in the cleaning solvent and dry them compressed air.
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In order to avoid getting injured or damage of bearings do not rotate them, blowing in compressed air. |
- Check bearings and their cups for existence of cavities, signs of wear and damages. In case of need make replacement.
- Examine a rotary fist and a pin of a case of the bridge on existence of signs of wear, cracks and other damages. Remove small agnails by means of a grinding stone.
- Check an epiploon, a sealant and a mud-stripper for existence of cracks and other damages.
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Authors of this manual recommend to make replacement of an epiploon and mud-stripper of a rotary fist regardless of their state. If the sealant of a cover of the bearing needs replacement, it is necessary to remove a bearing cone from a cover. |
- Replace all defective components.
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Assembly and installation
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If in the description of the procedure especially not a slander lubricant type, then use of universal lubricant on a lithium basis is meant. |
Assembly is made as it should be, the return to a dismantle order.
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- Establish new traffic jams and cups of the top and lower bearings in a bridge pin, having used for this purpose a tubular drift (see an accompanying illustration).
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- Grease sponges and an external wall of an epiploon of a rotary fist and put on a mud-stripper, an epiploon and a basic ring a bridge pin.
- Grease a pin of the bridge and establish on it a rotary fist. Do not establish in a fist an epiploon at this stage of assembly.
- Fill cones of the top and lower bearings lubricant, establish assemblies of bearings and adjusting laying on a rotary fist (in former provisions) and strongly tighten fixing bolts.
- Having established a rotary fist in rectilinear situation, hook on a steelyard for an ear of the rotary lever, having disposed it at an angle 90 ° to the lever approximately in 170 mm from the axial line of the bridge (see an accompanying illustration).
- Measure the effort which is required for turn of a fist on a bridge pin. If the result of measurement goes beyond an interval of 0.6 ÷ 1.75 kgfs, execute adjustment, having picked up adjusting laying of cups of the top and lower bearings of new thickness.
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Track that the total thickness of adjusting laying of the top and lower covers were identical in order to avoid violation of centering of position of a rotary fist. |
- Tighten bolts of fastening of covers of bearings with effort of 30 ÷ 40 Nanometers. Impose about 50 g of lubricant on an external surface of an epiploon and a mud-stripper, and also the reciprocal surfaces of a rotary fist.
- Establish a basic ring in a rotary fist, assembled track an epiploon and a mud-stripper that cuts of locks of a basic ring and a mud-stripper appeared in the lower part of assembly of a fist. Establish guards and a lock bolt of turn in former provisions.
- Connect the sharovy hinge(s) of steering draft (thirsts) for the rotary lever and tighten a koronchaty nut (i) with effort of 46 ÷ 54 Nanometers. Install the new forelock(s).
- Establish into place a nave of a wheel and a power shaft.
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