Kuhusu DRUM BRAKES

drum brake is a brake that uses friction caused by a set of shoes or pads that press outward against a rotating cylinder-shaped part called a brake drum. The term drum brakeusually means a brake in which shoes press on the inner surface of the drum.

Ndani mwa MANUAL TRANSMISSION

The function of any transmission is transferring engine power to the driveshaft and rear wheels (or axle halfshafts and front wheels in a front-wheel-drive vehicle). Gears inside the transmission change the vehicle’s drive-wheel speed and torque in relation to engine speed and torque. Whatever However this a video preview of on how a MANUAL TRANSMISSION works.

Jinsi TURBO ya kwenye gari inafanya kazi

Sana sana engine za diesel zinategemea mafuta na upepo (bila moto wa spark plug) na tena kuna wakati unafika wakati upepo unaoingia kwenye engine unapunguwa na kusababisha engine kufanya kazi haijakamilika! Kwahiyo hii TURBO inafanya kurudisha upepo wa exhaust, yaani ule unaotoka kwa exhaust, urudi ufanye kazi kama ule upepo wa kawaida unaotoka inje ya gari!

AIR CONDITION (A/C) system ya gari

Ile chemical au refrigrant au maji ya A/C inazunguka hivii;
COMPRESSOR inaongeza pressure na kuisababisha kupata joto, CONDESSOR inapokea na kuweza kupoza (cool) hii A/C alafu inaenda kwenye DRYER amabao inajaribu kutoa maji inaoweza kuwa ime dillute hii A/C juu ya kupoa. Sasa EXPANSION VALVE inafanya hii A/C kuwa kwenye pressure na temperature ya chini kabla kwenda kwenye EVAPORATOR ambao inasambaza upepo ubaridi ndani kwenye gari. Anyway, jaribu kuangalia hii video uone zaidi

WHY DISK BRAKES USED AT FRONT & DRUM BRAKES AT REAR WHEELS

Kuna aina mbili za brake systems. DISC amabo mara nyigi zinawekwa mbele (front) au na nyuma, na zile za DRUM amabo lazima ziwekwe nyuma.

DISC BRAKES
Disc brakes, zinaoneka na kama ile CD ya muziki yaaani they use a flat, disk-shaped metal rotor that spins with the wheel. Ukikanyaga kwenye hizi brake, caliper na squeeze brake pads kwenye disc,  yaani, just as you would stop a spinning disc by squeezing it between your fingers, and slows the wheel.

 DRUM BRAKES use a wide cylinder that is open at the back, kuonekana kama ile ngoma ya muziki wa traditional. Ukikanyaga brake pedal, zile curved shoes ndani ya hii drum, zinakuwa pushed outwards, rubbing against the inside of the drum and slowing the wheel.

TOFAUTI KATI YA, DISC & DRUM, BRAKES
>>> Disc brakes ziko na ubora sana kuliko drum brakes for several reasons. Kwanza, disc breaks do a better job dissipating heat (kupoteza joto).

>>Mara nyigi au kila uki brake mara kwa marara au gafla kwa nguvu  (hard stops) au wakati unashuka mulima, disc brakes take longer than drum brakes to lose effectiveness!

>>Disc brakes ni bora kwakati nvua (wet weather), kwasababu ile centrifugal force tends to fling water off the brake disc and keep it dry, whereas drum brakes amabo ziko kama ndoo, they will collect some water on the inside surface where the brake shoes contact the drums.

WHY MANY CARS USE REAR DRUM BRAKE? Braking causes the car’s weight to shift forward; as a result, about 70% of the work is done by the front brakes. That’s why front brakes tend to wear out faster. Drum brakes are less expensive to make than disc brakes, largely because they can also double as a parking brake, whereas disc brakes require a separate parking brake mechanism.  Anyway, angalia hii video uone tofauti na ufanji kazi.

Kuhusu CATALYTIC CONVETER (ya kwenye exhaust pipe)

CATALYTIC CONVETER ni lile dumu pana kwenye mdumu au pipe ya kupeleka upepo chafu kutoka kwenye engine ya gari.  Sasa wakati engine inachoma mafuta na upepo (combustion), kuna mafuta amabao inachoma vibaya …yaaani ni kama wakati unatengeneza ile sigiri ya makaa ya kupika cha kula, ule upepo unaotoka kwanza ni hatari ukikuiingia tumboni…yaaani hii CATALYTIC CONVTER inabailisha upepo ubaya kuwa mzuri yaani oxidising dangerous Carbon monoxide gas into carbondioxide. …Au jaribu ku angalia hii video uone jinsi hii CATALYTIC CONVETER inavofany kazi. ONYO:- Hii CATALYTIC CONVETER iko na sensor, so ukiitoa kuweka pipe ya kawaida gari itapata shida! 

KUHUSU ACCELERATOR PEDAL POSITION SENSOR

Kwenye gari za kisasa hakuna tena ile rod ya chuma ambao ili connect pedal ya accelerator kwenye throttle body.  Siku hizi ni mfumo wa wire au electronic kwamba ukikanyaga kuna sensor inatambua kulinga na jinsi alafu inapeleka message au ujumbe kwenye control box (ECU) au computer, alafu hii Control box inamwambia throttle kunfunguka kulingana itakavyo tambua hii message. Hii video ina maelekezo zaidi.

UJANJA KUPATA NATS PIN (Nissan Anti-Theft System)

Hii software inaweza kusaidia wakati ku program transponder keys to a wide range of Nissan na Infiniti vehicles. 

So kamwe kutemea dealer au mtalaamu juu na wewe unaweza kuweka hii code kwa kutumia aina ya mashine yeyeote!    Yaani, unahitahi>> Date code, the Encrypted Pin na Origin of the Immobilizer system. Hizi details can be found either on the sticker of the IMMU unit around the ignition lock, or on the sticker of the SEC unit located between the steering wheel and the center console.  Jinsi hii video inaonesha

nat-1.png
Type 1 Sticker: IMU Aerial
Location: around the Ignition
Red: Date Code. (Use only the last 6 digits)
Yellow: Encrypted PIN.
Green: Origin.
52335A + 0688 + Mexico = 2095
nat-2.png
Type 1 Sticker: IMU Aerial
Location: around the Ignition
Red: Date Code. (Use only the last 6 digits)
Yellow: Encrypted PIN.
Green: Origin.
42643A + 533E + Germany = 0154
nats-5.PNG

SOFTWARE KUMBUSHA JINSI YA KUPIMA SENSORS, ACTUATORS, CONTROL BOX…nk

Emotoka empya zona zikozesa computer, kati awo neziba enzibu okukozesa oba okukanika. kati kano ka software kakulanga engeri bwezikola oba okuzikanika.

   nyiga wano okudownloadinga omusomo gwazo.  Alafu hii video inaonesha jinsi ya kumitimisa hii program!

kati nga THROTTLE SENSOR bwekolall;lj;
ddfedgddgd

kati oba OXYGEN SENSOR d;d;d;d odlclclc

ekunyonyola OBD code etegeza ki
f;f;f;f


oba ABS SENSOR

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KUTAMBUA & KUTENGENEZA TATIZO KWENYE GARI YAKO MWENYEWE

Hii software imekusanya ma tatizo mengi au yote inaweza kutokea kwenye gari lako. So unaweka tu sign au symptom kwenye gari alafu inakuambia nini shida, jinsi ya kutatua na kuizuia isitokee tena! iko na video na picha! inafanya vizuri kwenye system za WINDOWS 7 kwenda chini!


Alafu hii video inaonesha matumizi na jinsi ya ku download

website ya EPC (BMW)

WWW.REALOEM.COM hata bila kuweka Chasis number inakupa mchora ya kila BMW pamoja na part number. Ukijua part number ni rahisi kupata spare zingine ambao zinaingiliana na hiyo spare unatafuta. Sema tu bora ukiwa na serial number ya hiyo BMW. Serial number ni zile digit saba (7) za mwisho kwenye chasisi au VIN. Kwa mfano, chasisis number 1VXBR12EXCP901213  inakuwa na serial number P901213! Jinsi tumejaribu kuelezea katika hii video! Kumbuka WWW.REALOEM.COM

website ya EPC (Toyota)

www.toyodiy.com ukitaka kujua part number ya kwenye gari ya TOYOTA au ukiwa na part number unaweza kujua part zingine ambao zinaingiriana. Kwa mfano unaweza kuwa unatafuta spare ya Landcruiser (bei kubwa) kumbe hiyo part ya bei kubwa inafanana na ya Corolla (bei ndogo).  Yule muuza spear anauza jina (Landcruiser) ndo maana anauza kwa bei kubwa! umewahi kujiuliza kwanini muuza spare anakwambia umpe chasisis number ya gari? Anyway, Ili uweze kumbuka aandika WWW.TOYODIY.COM yaaani nusu ya neno TOYOta alafu DIY (Do it Yourself)  HAPA UJANJA tu! Hii video inakuonesha!

DPF (emulator)

DPF ni “Diesel Particulate Filter”
Tofauti na za petrol kutumia moto (spark), engine za diesel kuchoma mafuta ni kwa compression so hazichomi mafuta vizuri so zinatoa moshi hatari (unburnt fuels). DPF inawekwa ili kuzuia moshi hatari usitoke kwenye exhaust pipe jinsi wanaelekeza kwenye hii video!

Hii DPF inakua kwenye exhaust pipe

DPF inasafisha upepo mbaya ya kutoka kwa engine hivi, jinsi inaoneshwa hapa kwenye hii video. 

wakati DPF inasafisha ule upepo mchafu, uchafu kuna jinsi unachomwa BONYEZA HAPA KUJUA JINSI (generation) ...lakini inafika wakati wa kwamba uchafu unazidi  uwezo wa DPF mpka taa  ya DPF inakumbusha kubadilisha au kusafisha hiyo DPF!
Taa ya kuonesha au kukumbusha kwa DPF inapaswa kusafishwa au kubadilisha

Hebu tazama hii video uone ndani ya DPF wakati imechoka na kupaswa kubadilisha kununua mpya

Kwasababu hii DPF iko na sensor nyingi au inawasiliana na control box (ECU) so huwezi kufungua tu kutoa DPF kwamba gari ibaki ya kawaida kama gari zingine


HAPA UJANJA ni kwamba unaweza kutoa hiyo DPF lakini lazima udanganye control box (ECU) ifikiri kwamba bado DPF ipo na inafanya kazi vizuri , otherwise ECU ikitambua kwamba DPF haipo, gari halitatembea na kuendelea kuasha tu taa ya DPF. Sasa kuna kifaa kinaitwa “DPF EMULATOR” cha kudanganya control box!

Sasa kwenye hii video ona jinsi walibomowa hii exhaust na kutoa hiyo DPF
Ama jinsi huyu alivyotoa tu DPF na kuweka tu pipe ya kawaida baada ya ku program au remap control box (ECU)

SO HAPA TUNATOA VIFAA NA MAELEKEZO JINSI KUTOA DPF  KULINGANA NA GARI ILI UPEWE DETAILS SAHIHI
 
UKITAFUTA NA KUKOSA AU KAMA HUTAKI KUSUMBULIWA TENA NA SYSTEM YA DPF KWENYE GARI TUWASILIANE
 

Hapa unaona inavyokuwa baada ya kufanya ujanja wa DPF kwenye gari

Video hii inaeleza zaidi kuhusu system DPF
Alafu hapa ni blaa blaa za shule kuhusu system ya DPF!