Overhaul of Ladder Trucks

Ladder Truck Overhaul Process

Disassembly of Ladder Trucks

Disassembly of a ladder truck is done by removing the ladder and its fixtures from the vehicle body. The removed ladder is further disassembled into sections and then measured for distortion, warp and deformation and checked for crack, damage and other defects to ensure safety of the ladder.

Repair of Cylinders

A ladder truck is in danger when its ladder cylinder loses functionality. Among the ladder truck components subject to overhaul, the cylinders are particularly important.

Replacement of Hydraulic Gear Pump

After a long time of use the gears and casing of the hydraulic pump may have wear and damage, leading to performance deterioration.

Disassembly and Repair of Gyro Turntable

Damage in the gyro turntable may result in a major accident. Disassembly and repair of the turntable is one of the critical maintenance items during overhaul.

Disassembly and Repair of On-board Equipment

After 7 years of use, consumables including internal packing are found to have deteriorated due to wear and sliding parts are considerably damaged.

Replacement of Wire Ropes and Hydraulic Hoses

Guideline for Replacing Wire Ropes

Maintenance of Control Computers and Sensors

Unlike the conventional ladder trucks, the new model ladder trucks are fully controlled by a computer. It is thus very important to maintain the computer and connected sensors in good condition.

Change of Hydraulic oil

Most of hydraulic device/machinery malfunctions and increased power consumption are said to be caused by the use of deteriorated fluid. These problems may lead to breakage or even shutdown of the overall hydraulic system.

Appearance Inspection
The hydraulic oil is sampled from the top and bottom of the tank as well as the piping and then put in test tubes to be compared against new one in terms of color, odor and inclusion of foreign substances.

Painting, Plating and Rigging

Primer repair (including sheet metal and patty) → Wash primer coating (pink) → Painting (red) → Finishing (red)