Rear Door Hinge

Description

The core connecting components used for various types of backdoors to achieve opening and closing functions can be divided into two mainstream types based on installation methods: welded and bolted, which are suitable for different usage scenarios.
1. Core classification and characteristics
Full steel heavy-duty version: adopting a double-layer/triple layered structure, it can achieve 270 ° full opening, matched with non removable pin axle anti pry, suitable for scenarios such as box trucks and containers.
Vehicle specific models: such as the 180 ° rear door hinge of the Mercedes Benz Sprinter model, which can be extended to install spare tire racks and storage platforms to meet modification needs.
Industrial universal: heavy-duty version with steel lining, galvanized rust proof, suitable for harsh working conditions such as trailers and storage equipment.

Installation steps:
1、 Installation steps for bolted rear door hinge
Preparation tools: Prepare wrenches, screwdrivers, and matching bolts, clean the cabin and rear door installation surface.
Positioning mark: Mark the installation position according to the hinge size, and the distance between the upper and lower hinges should not be less than 1/3 of the door length.
Pre installation fixing: First, lightly screw the hinge onto the door body with bolts, and then align it with the installation hole of the compartment.
Debugging and fastening: Adjust the position of the door body to open and close smoothly, and lock all bolts in the order of pre tightening → final tightening.
2、 Installation steps for welded rear door hinges
Preparation: Clean up the oil stains in the welding area and temporarily fix the hinge positioning with fixtures.
Spot welding positioning: First, spot weld 2-3 points at the corners of the hinge to confirm that the door opening and closing are not stuck.
Full welding reinforcement: Continuously weld along the edge of the hinge base to ensure uniform welding without virtual welding.
Cooling treatment: After natural cooling, remove the welding slag and apply lubricating oil to the hinge pin shaft.
3、 General precautions
After installation, test the 270 ° opening and closing of the door body to confirm that there is no interference or looseness.
Bolts need to be checked regularly for their anti loosening status, and welding joints should be treated with rust prevention measures.