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Foton Crankshaft Flywheel Assembly
Foton Crankshaft Flywheel Assembly
2025-07-21
Foton Cylinder Head Cover Assembly-7
Foton Cylinder Head Cover Assembly-7
2025-07-21

Foton Timing Gear Train Assembly

Foton Timing Gear Train Assembly
Foton Timing Gear Train Assembly
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What is the Foton Timing Gear Train Assembly

  • Foton Timing Gear Train Assembly: Precision Synchronization for Peak Engine Performance
  • The Foton Timing Gear Train Assembly is the meticulously engineered heart of valve and fuel injection synchronization in compatible Foton diesel engines. This critical system ensures precise coordination between the crankshaft, camshaft, and fuel injection pump—directly impacting power output, fuel efficiency, and emissions control. Key components include:
  • Core Timing Components
  • CRANKSHAFT TIMING GEAR: Driven directly by the crankshaft, initiating the timing sequence.
  • CAMSHAFT TIMING GEAR & PRESSURE PLATE: Transfers motion to the camshaft, controlling valve actuation. Secured by the pressure plate to prevent axial movement.
  • OIL INJECTION PUMP TIMING GEAR: Synchronizes fuel delivery with piston position.
  • TIMING LAZY GEAR & IDLE GEAR ASSEMBLY:
  • TIMING IDLE GEAR SHAFT & BUSH: Provides intermediate timing control with a durable bronze bushing for reduced friction.
  • IDLE GEAR SHAFT PRESS PLATE: Secures the idle gear shaft assembly.
  • Hydraulic & Ancillary Drive Integration
  • HYDRAULIC PUMP DRIVE SYSTEM:
  • HYDRAULIC PUMP END CAP GASKET: Ensures oil-tight seal for the hydraulic pump drive.
  • FRONT HYDRAULIC PUMP GUSSET PLATE & CONNECTING PLATE: Reinforces mounting points for hydraulic pump components.
  • TENSIONING SYSTEM:
  • TENSION PULLEY & ROLLER BRACKET: Maintains optimal belt tension for timing accuracy.
  • TENSIONER SHAFT & BEARINGS: Precision bearings ensure smooth pulley operation under load.
  • Structural & Sealing Elements
  • TIMING CASE & COVER:
  • TIMING GEAR COVER & HOUSING COVER GASKET: Protects gears from contaminants while retaining lubrication.
  • TIMING CASE: Primary housing for the entire gear train.
  • CRITICAL SEALS & BUSHINGS:
  • CYLINDER HEAD BUSH (x2) & SLEEVE TUBE: Aligns components and manages thermal expansion.
  • VALVE OIL SEAL: Prevents oil ingress into combustion chambers (linked to valvetrain interface).
  • Fastening & Support Hardware
  • HIGH-STRENGTH FASTENERS:
  • BOLTS (MULTIPLE) & WASHERS (8, 10): Securely mount gears, plates, and brackets to withstand torsional forces.
  • RETAINER RINGS: Axially secure bearings and shafts.
  • GASKETS (AIR INLET PIPE PAPER GASKET x2, THERMAL GASKETS): Ensure leak-free connections for air intake and auxiliary systems.
  • Valvetrain Interface Components
  • VALVE ROCKER, SEAT & SPRING: Though primarily part of the cylinder head, these interface directly with the camshaft driven by the timing system.
  • Key Engineering Features:
  • Gear-Driven Reliability: Eliminates belt slippage risks with hardened steel gears for consistent timing accuracy.
  • High-Load Bearings: Supports shafts under extreme rotational forces for extended service life.
  • Triple-Sealed Protection: Combines gaskets, oil seals, and precision covers to shield against debris and oil leaks.
  • Modular Ancillary Drives: Integrated mounting for hydraulic pumps and generators via reinforced GENERATOR BRACKETS and CONNECTING PLATES.
  • Function & Impact:
    This assembly guarantees perfect synchronization of combustion events—ensuring intake/exhaust valves open/close at exact intervals while fuel injectors deliver precise metered doses. By maintaining this critical harmony, Foton engines achieve:
    ✓ Optimal fuel combustion
    ✓ Reduced emissions
    ✓ Consistent torque delivery
    ✓ Enhanced engine longevity

Product Parameters of Foton Timing Gear Train Assembly

No. Code Description Quantity
1 490BT-16014 HYDRAULIC PUMP END 2
10 GBT292-7206AC BEARING 1
11 GBT893.1-40 RETAINER RING 1
13 GBT5782-M8X65 BOLT 2
15 GBT5782-M8X40 BOLT 2
16 GBT5783-M8X25 BOLT 4
17 GBT5782-M8X30 BOLT 8
18 GBT5782-M8X70 BOLT 8
19 GBT5782-M8X45 BOLT 1
2 490BT-16013-1 HYDRAULIC PUMP END CAP GASKET 2
20 GBT93-12 WASHER 2
21 490B-02011 CAMSHAFT TIMING GEAR PRESSURE PLATE 1
22 490BT-02009 CAMSHAFT TIMING GEAR 1
23 490BT-02006 TIMING LAZY GEAR 1
24 490B-02003 OIL INJECTION PUMP TIMING GEAR 1
25 490B-02012 IDLE GEAR SHAFT PRESS PLATE 1
26 GBT5782-M8X60 BOLT 3
27 490BT-02100 INJECTION PIPE 1
28 490B-02004 TIMING IDLE GEAR SHAFT 1
29 490B-02005 TIMING IDLE GEAR BUSH 1
3 490BT-16021 FRONT HYDRAULIC PUMP GUSSET PLATE 1
30 GBT5783-M8X16 BOLT 1
31 490BT-02007 CRANKSHAFT TIMING GEAR 1
32 490B-53002-1 GENERATOR BRACKET 1
33 GBT5783-M10X25 BOLT 3
34 GBT93-10 WASHER 10 4
35 GBT5782-M8X55 BOLT 4
36 GBT93-8 WASHER 8 34
38 GBT5783-M8X30 BOLT 1
4 490BT-16017` FRONT HYDRAULIC PUMP CONNECTING PLATE GASKET 1
41 495BT-02015 BUSHING 1
42 GBT5783-M6X16 BOLT 6
43 GBT93-6 WASHER 6
45 495BT-16102 WASHER 1
46 495BT-16101 CAP 1
47 490BT-16005 GASKET 1
48 490BT-16016 AIR COMPRESSOR COVER PLATE 1
49 490BT-16201 TENSION PULLEY 1
5 GBT1276-6206 BEARING 1
50 GBT278-6203-2Z BEARING 1
51 490BT-16204 BUSHING 1
52 490BT-16202 ROLLER BRACKET 1
53 490BT-16203 TENSIONER SHAFT 1
54 GBT5783-M8X20 BOLT 1
54 GBT5783-M8X20 BOLT 1
56 490BT-16205 Tensioner Wheel Bearing Washers 1
6 490BT-16001-1 BEARING WASHER 1
7 490BT-16002-1 TIMING GEAR COVER 1
8 490BT-16003-1 TIMING GEAR HOUSING COVER GASKET 1
9 490BT-02010-1 TIMING CASE 1
63 A498B-01004 CYLINDER HEAD BUSH 1
63 A498B-01004 CYLINDER HEAD BUSH 1
64 490B-03109 SLEEVE TUBE 4
66 490B-09003 AIR INLET PIPE 1
67 490B-09004 AIR INLET PIPE PAPER GASKET 1
67 490B-09004 AIR INLET PIPE PAPER GASKET 1
68 498-03016 VALVE OIL SEAL 1
7 490B-03211A VALVE ROCKER 8
8 490B-03202 SEAT 4
9 490B-03203 SPRING 3

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