Repair of the engine YMZ-238

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2019-11-13 21:20:08

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The Diesel engine JAMZ-238 (Yaroslavl motor plant) is installed on many commercial vehicles, including heavy trucks MAZ and KAMAZ. This model engine earned wide acclaim drivers, and all thanks to the high torque and reliable operation. But all the same engine, like many other units, will sooner or later require repair. In this article we will discuss the process of preparing the engine YMZ-238 to repair.

YAMZ 238It Should be remembered that before the unit will go to a special area, it should be thoroughly rinsed. And only after all of its parts are deprived of any traces of dust and dirt, you can proceed to the next stages.

Each operation on repairs of YAMZ-238 must be performed with special tools and devices that you want to apply for a particular type of work. For example, removing bearings, bushings and rollers shall be made for a puller. If such a device there, remove these parts with the help of the mandrel. In any case, you should not beat a hammer on any parts in the hope that it will be removed. Of course, this engine, though it seems at first glance, huge and massive, but action with the use of sledgehammers and similar tools can lead to very unpleasant consequences, including a major overhaul of the engine YAMZ-238.

YAMZ 238 featureCharacterization of all pairs of parts is such that when removing one of them the unit will not work properly. Therefore, if the repair is not to be confused with the location of the paired parts and worse – to forget about installing them. And belong to this category, such parts as the rods and bushings of the transfer pump, the Cam shaft of the fuel high-pressure pump, needle injectors, and many others.

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One of the main stages of preparation of engine for overhaul is its removal from the vehicle. This process does not like mistakes, so all necessary detail as described in the manual trucks. It should be added that the removal of the motor is best done using 4 steel hooks. And this is done in the following way – by four eye-bolts clinging to these parts, and by means of a chain and winch (or other equipment with a lifting mechanism) up the entire unit.

Before repairs need to be concerned about the temporary storage location of the engine. Preferably, YAMZ-238 was installed on any stand, we should not forget about the pallet, which is also vulnerable to damage.

And finally, a brief instruction on how to disassemble this unit:

  1. YAMZ 238Carefully Unscrew the bolts on the clutch housing (it is important not to damage the drive shaft of the transmission).
  2. Remove the nuts on the clutch cover and disassemble the clutch pressure plate.
  3. Removable front and middle disks (for motors YAMZ 238 modifications-K) and slave (for all other models motor).
  4. Remove from the mounts, the starter (there are 2 pinch bolts), generator air brake, its compressor and fan Assembly.
  5. Remove air filter and four side stub.


Article in other languages:

AR: https://tostpost.com/ar/cars/19885-ymz-238.html

BE: https://tostpost.com/be/a-tamab-l/37599-ramont-ruhav-ka-yamz-238.html

DE: https://tostpost.com/de/autos/37217-reparatur-motor-jamz-238.html

ES: https://tostpost.com/es/coches/36983-reparaci-n-de-motor-yamz-238.html

HI: https://tostpost.com/hi/cars/21571-ymz-238.html

JA: https://tostpost.com/ja/cars/19522-ymz-238.html

KK: https://tostpost.com/kk/avtomobil-der/37949-zh-ndeu-oz-alt-ysh-yamz-238.html

PL: https://tostpost.com/pl/samochody/39427-remont-silnika-yamz-238.html

PT: https://tostpost.com/pt/carros/39091-repara-o-de-motores-jamz-238.html

TR: https://tostpost.com/tr/arabalar/34448-onar-m-motor-jamz-238.html

UK: https://tostpost.com/uk/avtomob-l/38338-remont-dviguna-yamz-238.html

ZH: https://tostpost.com/zh/cars/27351-238.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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