مجموعة الإسكان الأمامية FAW: لماذا هذه 24 الأجزاء المهمة ضرورية لسلامة المحرك

مرحبًا بك في هذا الدليل الفني المهم حول مجموعة الإسكان الأمامية FAW. هذا هو الكامل “front cover” و “timing gear case” assembly for the FAW Jiefang CA4251P66K24T1A3E5 6×4 جرار نصف مقطورة ديزل. This component is the structural face of the engine.

ال مجموعة الإسكان الأمامية FAW is a complex, precision-machined casting that performs multiple vital functions. It covers and seals the engine’s entire timing gear train, provides the mounting points for numerous critical accessories (like the fuel pump and power steering pump), and contains the passages for oil and coolant.

This in-depth guide is an essential resource for professional engine technicians and parts managers. سنقوم بتفكيك الكل مجموعة الإسكان الأمامية FAW فيه 24 مكونات صالحة للخدمة, including bearing covers, مضخة وقود, oil cooler piping, and the vast array of seals and fasteners required for a leak-free engine.

المكون الأساسي: The Front Housing (1701015-A2V)

قلب ال مجموعة الإسكان الأمامية FAW is the ‘Front housing with steel wire sleeve set assy’ (1701015-A2V). This is the main structural casting, typically made from high-grade aluminum to save weight. This is not just a “غطاء”; it is a load-bearing component that adds to the engine’s overall rigidity.

Its primary function is to create a sealed “case” that encloses the engine’s entire timing gear train (as detailed in assembly 16). This case contains the high-velocity “splash” of oil that lubricates the timing gears, preventing it from leaking and protecting the gears from road dust and water.

ال “steel wire sleeve set” (على سبيل المثال, Helicoil) designation is a critical quality feature. It means the aluminum casting has been pre-fitted with hardened steel thread inserts. This is vital for all the accessory mounting bolts, as it prevents the soft aluminum threads from stripping during service, ensuring a secure, high-torque mount for the life of the مجموعة الإسكان الأمامية FAW.

Shaft and Bearing Support System

ال مجموعة الإسكان الأمامية FAW provides the mounting and sealing for several critical shafts that pass through it. The ‘Cover-first shaft rear bearing’ (1701141-A7G) and its ‘Gasket’ (1701142-A7G) are a key sub-assembly. هذا هو الشيء الرئيسي “cap” that bolts to the *inside* of the front housing, securing the large input shaft bearing (see assembly 143) in its bore.

بصورة مماثلة, the ‘End cap-intermediate shaft front bearing’ (1701028-A9P) هو “cap” that seals and secures the front bearing of the transmission’s counter-shaft (see assembly 144). These bearing caps are not interchangeable and are precision-machined.

ال مجموعة الإسكان الأمامية FAW also houses the ‘Bushing-shift fork shaft’ (1701013-A9P). This is a bronze bushing pressed into the housing, which supports the end of a shift rail from the “top cover” حَشد (see assembly 153). These bearing supports are what ensure all the transmission’s internal shafts are held in perfect, parallel alignment.

Integrated Lubrication System Components

ال مجموعة الإسكان الأمامية FAW is not just a case; it is an active part of the engine’s lubrication system. The ‘Oil pump assembly’ (1707840-A6V) is mounted *to* (or *in*) this housing, driven by a gear on the crankshaft. This assembly is the “قلب” of the transmission’s own oil system, drawing fluid from the sump and force-feeding it to all the gears and bearings.

This system also includes the ‘Oil pipe assembly’ (1701435-A6V), ‘Oil spray pipe assembly’ (1701450-A2V), and ‘Intake oil pipe assembly’ (1701420-A2V). هذه هي “arteries” التابع مجموعة الإسكان الأمامية FAW. They are rigid pipes that route the pressurized oil from the pump to specific, critical locations, such as spraying a constant jet of oil onto the main gear-mesh points and into the bearings.

ال مجموعة الإسكان الأمامية FAW also has service ports, such as the ‘Cover-outer observation hole’ (1601042-A2K) (the clutch inspection port) and its ‘Gasket’ (1601041-A2K), which are bolted to the front. These integrated oil-handling features make the مجموعة الإسكان الأمامية FAW a highly complex and critical component.

Fasteners, Plugs, and Seals

ال مجموعة الإسكان الأمامية FAW must be perfectly sealed. This is accomplished by a large number of specialized fasteners and seals.

**Fasteners:** The entire assembly is secured with dozens of high-tensile ‘Hex flange bolts’ (Q1841030S, س1840816, Q1841035S, Q1841050S, Q18410110S, Q1841230). The flange head and “ق” type (أو “ت” type) designation indicate they are high-strength, vibration-resistant fasteners. "مسامير سداسية الرأس."’ (CQ1500616, CQ1501512S) and ‘Stud bolts’ (CQ1211640) are used in specific, high-load areas.

**Plugs & الأختام:** The ‘Hollow dowel screw’ (1701442-A2V) and ‘Hollow bolt’ (1701440-A2V, 1701442-A2V) are “banjo” البراغي, used to connect the oil lines while allowing fluid to flow through them. They are sealed with ‘Gasket rings’ (1701415-A2V). The ‘Hydraulic pneumatic O-ring rubber seal’ (CQ7343236B) provides a critical seal for a high-pressure connection, likely for the oil pump or a sensor.

The ‘Hex nuts’ (CQ34008, CQ34116) and ‘Spring gaskets’ (س40306, Q40405) are used to secure the stud bolts. This comprehensive hardware set is what ensures the مجموعة الإسكان الأمامية FAW can contain high-pressure oil and withstand constant engine vibration.

FAW Front Housing Assembly Parts List

الجدول التالي يوفر كامل, تفصيل مفصل للجميع 24 components identified in the ‘Front Housing Assembly’ رسم تخطيطي للجرار FAW CA4251P66K24T1A3E5. هذا مجموعة الإسكان الأمامية FAW is the structural and logical hub of the transmission.

المواصفات الفنية وسياق التجميع

المواصفات ل مجموعة الإسكان الأمامية FAW are defined by its function as the structural, precision-machined “timing case” و “bell housing” of the transmission. كامل مجموعة الإسكان الأمامية FAW is a key structural component.