FAW J6P Front Wheel Assembly: 13 Critical Parts for a Flawless Accessory Drive

Welcome to this definitive technical analysis of the FAW J6P Front Wheel Assembly (Chapter 22). This is the complete Front-End Accessory Drive (FEAD) system for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

This is not a single part, but a complex “Logic Assembly” of 13 component types, all working in perfect synchrony.

The “logic” of this FAW J6P Front Wheel Assembly is to act as the engine’s “power take-off,” transferring rotational power from the crankshaft to *all* essential accessories, including the water pump, alternator, and A/C compressor.

The “Parasitic Load Logic” is the key to understanding this FAW J6P Front Wheel Assembly. Every component in this system (Water Pump, Alternator, A/C) is a “parasite” that “steals” horsepower from the engine to do its job. The entire “logic” of this assembly is to manage these parasitic loads with maximum efficiency and 100% reliability. This is all accomplished by a single ‘Multi-groove belt’ (Comp 3) that snakes through the system. A failure of this one belt disables the entire truck, making the reliability of every component in the FAW J6P Front Wheel Assembly a critical safety feature.

The “Tensioning Logic” is the system’s “brain.” A long serpentine belt is prone to “flutter” (from engine pulses) and “slip” (from sudden loads, like the A/C clutch engaging). This FAW J6P Front Wheel Assembly uses *two* tensioners: an ‘Automatic tensioner assy’ (Comp 12) and a ‘Tensioner assy’ (Comp 4). This “Dual-Tensioner Logic” is a robust design. The ‘Automatic tensioner’ (Comp 12) uses a powerful internal spring to maintain *perfect* belt tension at all times, instantly compensating for load changes and belt stretch. The second ‘Tensioner’ (Comp 4) or ‘Flat idler pulley’ (Comp 8) guides the belt, ensuring it has maximum “wrap angle” (grip) on all the accessory pulleys.

This expert guide is an essential resource for chassis technicians, fleet maintenance managers, and parts specialists. We will deconstruct the entire 13-component group into its four primary “logic” systems: the “Drive Core Logic” (the crankshaft pulley that provides power), the “Tensioning & Guide Logic” (the tensioners and idlers), the “Accessory Load Logic” (the components that *use* the power), and the “Structural & Fastener Logic” that holds the entire FAW J6P Front Wheel Assembly to the engine.

Core 1: The “Drive Core” Logic (Components 10, 11)

This group is the “power source” for the entire FAW J6P Front Wheel Assembly. It is the only component in the group that *provides* energy; all others *consume* it.

1. Component: ‘Multi-groove pulley – crankshaft’ (1005046-36D)
This (Comp 10) is the “Power Take-Off Logic.” It is a heavy-duty, dynamically-balanced nodular iron pulley. Its “logic” is to be the mounting point for the ‘Multi-groove belt’ (Comp 3), transferring the crankshaft’s rotation to the rest of the FAW J6P Front Wheel Assembly. This pulley is “multi-groove” (or serpentine), which provides a massive surface area for grip, preventing belt slippage even under the high loads of the A/C compressor and alternator.

2. Component: ‘Damper bolt’ (1005048K29D)
The list calls for six (6) of these (Comp 11). This is the “Critical Fastener Logic.” These bolts are *not* just holding the pulley. They are holding the ‘Multi-groove pulley’ (Comp 10) AND the ‘Silicone oil damper’ (P/N 1005190-36D, *see assembly 9*) *together* onto the nose of the crankshaft. This “Sandwich Logic” is critical. The damper absorbs the engine’s torsional vibrations *before* they can reach the pulley. These six bolts are “Torque-to-Yield” (TTY), single-use fasteners. A failure here would cause the entire FAW J6P Front Wheel Assembly to detach from the engine.

Core 2: The “Tensioning & Guide” Logic (Components 3, 4, 8, 12)

This is the “brain” of the FAW J6P Front Wheel Assembly. Its logic is to maintain perfect belt tension and routing at all times, under all loads.

1. Component: ‘Automatic tensioner assy’ (1023010-36D)
This (Comp 12) is the “Primary Tensioning Logic.” Its “logic” is to use a high-strength internal spring to *automatically* apply the perfect amount of force to the belt (Comp 3). When the A/C compressor (Comp 6) engages, the belt load suddenly spikes. This tensioner’s spring “logic” instantly reacts, taking up the “slack” to prevent the belt from slipping or squealing. It also has an internal “damping logic” (hydraulic or friction) to stop the tensioner arm from “fluttering” with engine pulses, which is the primary cause of belt noise and premature wear in the FAW J6P Front Wheel Assembly.

2. Component: ‘Tensioner assy’ (1023020-36D)
This (Comp 4) is the “Secondary Tensioning Logic.” The presence of *two* tensioners suggests a complex belt path. This ‘Tensioner’ is likely a “static” or “manual” tensioner for a *secondary* belt (e.g., a belt that only drives the A/C compressor and water pump). Its “logic” is that it is set to the correct tension *once* by a technician during installation and then locked in place.

3. Component: ‘Flat idler pulley assy’ (1023015-36D)
This (Comp 8) is the “Routing Logic.” Its “logic” is to route the belt in a “snake” pattern. Because it is a “flat” idler (no grooves), it runs on the *back* (flat side) of the ‘Multi-groove belt’ (Comp 3). This “reverse bend logic” is used to create a high “wrap angle”—forcing the belt to wrap further around a small-diameter pulley (like the alternator). This increased contact area is what gives the FAW J6P Front Wheel Assembly its “non-slip” grip.

Core 3: The “Accessory (Load)” Logic (Components 1, 5, 6, 13)

This group represents the “parasitic” components—the “loads” that *use* the power generated by the FAW J6P Front Wheel Assembly.

1. Components: ‘Water pump assy’ (1307010-36D) & ‘Water pump pulley’ (1307014-36D)
This (Comp 1 & 13) is the “Thermal Control Logic.” This is a “full-time” load. The ‘Pulley’ (Comp 13) is driven by the belt, which in turn spins the ‘Water pump’ (Comp 1). The pump’s “logic” is to be a centrifugal pump that circulates *gallons* of coolant per minute through the engine block and radiator. This is the engine’s “heart,” and its power source is the FAW J6P Front Wheel Assembly. A slipped belt here means instant overheating.

2. Component: ‘Alternator assy’ (3701010-36D)
This (Comp 5) is the “Electrical Load Logic.” This is the truck’s “power plant.” Its “logic” is to convert the mechanical rotation of the FAW J6P Front Wheel Assembly into DC electrical energy to charge the batteries and power all vehicle electronics. This is a “variable” load: when the batteries are full and lights are off, it spins easily. When the batteries are low and all lights are on, its internal electromagnetic resistance becomes a *major* load on the engine. 3. Component: ‘A/C compressor assy’ (8103020-36D)
This (Comp 6) is the “Cyclical Load Logic.” This is the most demanding component of the FAW J6P Front Wheel Assembly. Its “logic” is based on an “electromagnetic clutch.” When the A/C is OFF, its pulley “free-spins” with almost zero load. When the driver hits the A/C button, the clutch “slams” shut, placing an *instant* 10-15 horsepower load on the belt. This “sudden shock logic” is the single biggest test of the ‘Automatic tensioner’ (Comp 12).

Core 4: The “Structural & Fastener” Logic (Components 2, 7, 9)

This final group’s “logic” is to create a rigid, vibration-proof “foundation” for the entire FAW J6P Front Wheel Assembly.

1. Component: ‘Front-end system support’ (1023011-36D)
This (Comp 2) is the “Structural Foundation Logic.” The Alternator (Comp 5), A/C Compressor (Comp 6), and Tensioners (Comp 4, 12) do not bolt directly to the engine block’s thin timing cover. They bolt to *this* heavy-duty, cast-iron “support” bracket. This “Docking Station Logic” is critical for two reasons: 1) It ensures all accessories are mounted with perfect, “parallel” alignment, which is essential for belt life. 2) It provides a massive, rigid foundation that can absorb the combined vibrations and loads of all accessories, preventing them from cracking or failing. This bracket is the true chassis of the FAW J6P Front Wheel Assembly.

2. Components: ‘Hex flange bolt’ (Q1841045) & ‘Hex flange guide bolt’ (Q1821080)
This is the “Mounting Hardware Logic.” The ‘Hex flange bolts’ (Comp 7) and ‘Hex flange guide bolts’ (Comp 9) are the high-tensile fasteners that hold the accessories *to* the ‘Support’ (Comp 2), and the ‘Support’ *to* the engine block. The “Flange Logic” provides a built-in washer for load distribution. The “Guide Logic” (Comp 9) refers to bolts with a “dowel” or “guide” tip, which are used to *align* the heavy components (like the A/C compressor) perfectly *before* the other bolts are tightened. This is a “serviceability logic” that makes installation and alignment of the FAW J6P Front Wheel Assembly much easier.

FAW J6P Front Wheel Assembly Parts List & Specifications

The following table provides the complete, detailed breakdown of all 13 component types identified in this FAW J6P Front Wheel Assembly (FEAD) for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

Core Specifications

The specifications for the FAW J6P Front Wheel Assembly are defined by its function as the engine’s complete Front-End Accessory Drive (FEAD).