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12.1.2. Service of assemblies of rotary fists

Removal and dismantling

Components of assembly of a rotary fist

1 — bolts
2 — a persistent bolt
3 — a cover
4 — adjusting laying
5 — a guard
6 — a mud-stripper
7 — an epiploon
8 — a basic ring
9 — a rotary fist

 PERFORMANCE ORDER

  1. Weaken nuts of a forward wheel.
  2. Car front also establish to Poddomkratta it on the props got under frame longerons. Remove a forward wheel.
  3. Remove a nave of a wheel and a power shaft.
  4. 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.
  5. 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.
  6. 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.
  7. Remove a rotary fist from a bridge case pin, then remove a basic ring, an epiploon and a mud-stripper.
  8. By means of a drift take from a pin of the bridge of a cup of the top and lower bearings and a stopper.

Cleaning and check of a condition of components

 PERFORMANCE ORDER

  1. Wash out all components, except for epiploons, in the cleaning solvent and dry them compressed air.

In order to avoid getting injured or damage of bearings do not rotate them, blowing in compressed air.

  1. Check bearings and their cups for existence of cavities, signs of wear and damages. In case of need make replacement.
  2. 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.
  3. Check an epiploon, a sealant and a mud-stripper for existence of cracks and other damages.

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.

  1. Replace all defective components.

Assembly and installation

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.

 PERFORMANCE ORDER

  1. 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).
  1. 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.
  2. 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.
  3. 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.
  4. 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).
1 — a steelyard
2 — a rotary fist
  1. 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.

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.

  1. 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.
  2. 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.
  3. 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).
  4. Establish into place a nave of a wheel and a power shaft.