Dongfeng Rear Axle(B)
Dongfeng Rear Axle(B)
2025-08-16
Dongfeng Final Transmission
Dongfeng Final Transmission
2025-08-16

Dongfeng Differential Lock

Dongfeng Differential Lock
Dongfeng Differential Lock

What is the Dongfeng Differential Lock

  • 1. Operator Control & Interface
    Engagement is initiated via the Foot control lever, providing the driver with direct, ergonomic actuation. This lever transmits force through a durable Galvanized steel wire I-1.40×260, acting as a flexible linkage cable. Positive engagement feel is enhanced by a return Spring, ensuring the lever resets to the disengaged position when released.
  • 2. Shift Mechanism & Positive Locking
  • Shift Fork Assembly: The core translating component is a robust Shift fork, directly responsible for moving the locking sleeves. It operates linearly on a hardened Shift fork shaft.
  • Sleeve Engagement: The fork actuates the Left splicing sleeve and Right splicing sleeve. These precision-machined sleeves slide laterally to physically lock the differential’s side gears to the housing, creating a solid axle effect for maximum traction.
  • Secure Retention: A Set screw with dog point M10×25 positively locks the shift fork to its shaft, preventing slippage under high stress. The shift fork shaft itself is secured against rotation by Slotted spring pin 5×35 and Slotted spring pin 8×35.
  • 3. Sealing & Wear Protection
  • Shaft Sealing: A critical O-ring seal 15×2.65 is installed on the shift fork shaft where it penetrates the axle housing. This prevents gear oil leakage and blocks contaminants like dirt and water from entering the mechanism.
  • Bushing Interface: A low-friction Sleeve acts as a bushing or wear surface, guiding the shift fork shaft smoothly within the housing bore, minimizing friction and ensuring long-term reliability of the engagement action.
  • 4. Structural Integrity & Fastening
  • Washer Specification: A Chamfered plain washer 20-140HV (Hardness Vickers 140) is used under relevant fasteners. This hardened washer distributes load effectively, prevents fastener head embedment, and resists deformation under the high clamping forces required for differential lock components.

Parameters of Dongfeng Differential Lock

No. Part No. Name Quantity
1 300.38.020-1 Foot control lever 1
2 GB879-86 Slotted spring pin  5×35 2
3 GB879-86 Slotted spring pin  8×35 2
4 GB97.2-85 Chamfered plain washer 20-140HV 1
5 300.38.154 Shift fork 1
6 GB3452.1-82 O-ring seal 15×2.65 2
7 300.38.169 Left splicing sleeve 1
8 GB75-85 Set screw with dog point M10×25 2
9 300.38.170-1 Right splicing sleeve 1
10 GB3081-82 Galvanized steel wireⅠ-1.40×260 1
11 300.38.155-1 Shift fork shaft 1
12 200.38.151-1 Spring 1
13 300.38.152-1 Sleeve 1
 

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