فاو زجاج النافذة الخلفية: السر المكون من مكونين للخزنة, سيارة أجرة هادئة

Welcome to this in-depth technical guide to the فاو زجاج النافذة الخلفية حَشد. هذا هو الكامل, two-component “gasket-set” window system for the rear bulkhead of the FAW Jiefang CA4251P66K24T1A3E5 6×4 جرار نصف مقطورة ديزل. This assembly is a critical component of the cab’s “safety cell,” providing the driver with essential rearward visibility while simultaneously creating an acoustic, thermal, and weatherproof seal.

ال “منطق” التابع فاو زجاج النافذة الخلفية system is one of “عائم” security. Unlike the bonded front windscreen, this assembly uses a heavy-duty, one-piece ‘Sealing strip’ (5603038-A86-C00) that both holds the ‘Rear window glass’ (5603026-A86) in place and seals it against the cab’s metal frame. هذا “منطق” provides excellent durability against chassis flex and makes field replacement simpler.

This expert analysis is an essential resource for cab technicians, متخصصون في إصلاح الاصطدام, ومديري قطع الغيار. سنقوم بتفكيك الكل فاو زجاج النافذة الخلفية assembly by analyzing its two critical Minimum Serviceable Units (وحدات التخزين المتنقلة). We will explore the “منطق السلامة المخفف” of the glass itself and the “Triple-Seal Logic” of its all-important EPDM rubber weatherstrip.

جامعة ولاية ميشيغان 1: ال “منطق السلامة المخفف” من الزجاج (5603026-A86) (ال “أطول” الوحدة النمطية)

The ‘Rear window glass’ (5603026-A86) is the primary component of the فاو زجاج النافذة الخلفية نظام. This MSU is not just a simple pane of glass; it is a high-tech “زجاج الأمان المقسى” عنصر, and its “منطق” is entirely different from the *laminated* glass used in the front windscreen.

1. ال “هدأ” منطق (قوة & أمان):

“هدأ” هي عملية صناعية حيث يتم تسخين الزجاج المقطوع إلى أكثر من 600 درجة مئوية ثم يتم تسخينه “مروي” (يبرد بسرعة) مع الهواء ذو ​​الضغط العالي. هذا “منطق” of thermal shock causes the outer surfaces of the glass to cool faster than the center, creating a state of high compression on the surface, balanced by high tension in the core.

This internal stress makes the فاو زجاج النافذة الخلفية 4 ل 5 مرات أقوى من الزجاج القياسي. هذا “strength logic” is essential for a truck, allowing the glass to easily withstand severe cab vibrations, thermal shock (like a hot sleeper on a cold night), and minor impacts from debris.

ال “منطق السلامة” بل هو أكثر أهمية. If the glass *does* break, يتم تحرير التوتر الداخلي, وينقسم الجزء * بأكمله * على الفور إلى آلاف الأجزاء الصغيرة, مثل المكعب, غير ضارة نسبيا “الحصى.” هذا هو “dicing” fracture. هذا “منطق” is a deliberate choice for rear and side windows, as it prevents the large, حلاقة حادة “الخناجر” that are created when normal or laminated glass shatters, which could be fatal to a driver in a rollover or impact.

2. ال “الرؤية” منطق (عملية):

ال فاو زجاج النافذة الخلفية is an essential tool for the driver. إنه “منطق” is to provide a clear, distortion-free view of the trailer’s “kingpin” و “fifth wheel.” This visibility is critical for safely and efficiently hooking up to a trailer, a task a driver may do multiple times per day.

It also provides a vital “نقطة عمياء” check, allowing the driver to glance back and ensure the trailer is tracking correctly, or to get a visual on the cab’s “headache rack” and the load. For this reason, the MSU must be OEM-quality optical-grade glass.

3. ال “فريت” منطق (UV Protection):

Like the front windscreen, ال فاو زجاج النافذة الخلفية features a “frit” – the baked-on, black ceramic border. This frit is not decorative; إنه أمر بالغ الأهمية “منطق” عنصر.

Its primary function is to act as a UV light shield. The EPDM rubber ‘Sealing strip’ (جامعة ولاية ميشيغان 2) that holds it in place is vulnerable to long-term sun exposure. This black ceramic band “منطق” completely blocks sunlight from hitting the “inner lip” of the gasket, preventing it from drying out, تكسير, and shrinking, which would cause a leak.

جامعة ولاية ميشيغان 2: ال “Triple-Seal” Logic of the Sealing Strip (5603038-A86-C00)

The ‘Sealing strip-rear window glass’ (5603038-A86-C00) is the second half of the فاو زجاج النافذة الخلفية نظام. This is a one-piece, molded EPDM rubber gasket, and it is the “منطق” behind the entire “gasket-set” تثبيت.

المنطق المادي (إبدم): This MSU is made from EPDM (إيثيلين بروبيلين ديين مونومر) ممحاة. This material “منطق” is chosen for its superior resistance to:

• UV & Ozone: It will not crack or “dry-rot” from decades of sun exposure.
• درجة حرارة: It stays flexible in extreme cold (preventing leaks) and won’t get “gummy” in high heat.
• مجموعة الضغط: It has “memory,” meaning it constantly presses against the glass and the cab body to maintain a tight seal.

ال “Triple-Seal” منطق: This single gasket provides three critical sealing functions for the فاو زجاج النافذة الخلفية.

• 1. Water Seal: This is its most obvious “logic.” The compression fit of the rubber channel blocks all rain, الثلج, and wash water, preventing it from entering the cab, soaking the headliner, or ruining the sleeper.
• 2. Acoustic Seal: This dense, heavy rubber is a “منطق” barrier for noise. It stops high-frequency wind “whistle” and blocks noise from the chassis, محرك, and trailer from entering the cab.
• 3. Fume/Dust Seal: This is the critical safety “logic.” It creates an airtight seal that prevents dust and, الأهم من ذلك, diesel exhaust fumes (which can be “sucked” into the low-pressure zone behind the cab) from entering the driver’s breathing area.

تثبيت & فشل “منطق” of the 2-Part Assembly

ال فاو زجاج النافذة الخلفية and its seal are a “matched set.” ال “منطق” of their design dictates their installation method, which is completely different from the bonded front windscreen.

تثبيت “منطق” (Rope-In): This assembly uses a classic “rope-in” method.

1. The technician first wraps the ‘Sealing strip’ (جامعة ولاية ميشيغان 2) around the edge of the ‘Rear window glass’ (جامعة ولاية ميشيغان 1).
2. A strong nylon cord is then pressed into the “body channel” of the gasket, all the way around.
3. The entire assembly is placed into the cab opening from the *outside*.
4. A second technician, from the *inside*, slowly pulls the cord. هذا “منطق” of the cord pulling *out* of the channel *pulls* the inner lip of the gasket over the metal pinch weld, locking the فاو زجاج النافذة الخلفية في مكانه.

فشل “منطق” & إمكانية الخدمة:

الزجاج (جامعة ولاية ميشيغان 1) fails from impact. The seal (جامعة ولاية ميشيغان 2) fails from age. زيادة 7-10 سنين, the EPDM rubber will slowly shrink, dry out, and harden.

هذا “shrinkage logic” هو #1 cause of leaks. The seal will pull apart at the corners, creating a visible “فجوة,” or it will lose its “compression set,” allowing water to seep between the rubber and the glass.

Service Logic: Both components are individual MSUs. لكن, the best practice “منطق” is to *always* replace them as a set. The labor to remove and reinstall the glass is the same. Trying to re-use an old, hardened ‘Sealing strip’ is a false economy that will almost certainly result in a leak. Likewise, trying to install old, جامد, tempered glass into a new, tight rubber seal places immense stress on the glass, risking a stress fracture. ال فاو زجاج النافذة الخلفية assembly is designed to be replaced as a 2-part kit.

FAW Rear Window Glass Parts List & تحديد

الجدول التالي يوفر كامل, تفصيل مفصل للجميع 2 أنواع المكونات المحددة في فاو زجاج النافذة الخلفية التجميع للجرار FAW CA4251P66K24T1A3E5.

تحديد

المواصفات ل فاو زجاج النافذة الخلفية assembly are defined by its function as a gasket-set, structural safety-glass component for the rear cab bulkhead.