Maintenance of Heavy Off-Road Vehicles Using Hydraulic Torque Wrenches

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Project Details
Industry: Mining
Brand Bolting System

Overview

Heavy off‑highway and industrial equipment often requires maintenance on large, seized fasteners that cannot be safely loosened using manual tools. A hydraulic torque wrench system was applied to deliver controlled torque, enabling safe and efficient bolt removal and replacement during scheduled service operations. 

The Challenge

An off-road heavy vehicle service center required a reliable method to loosen seized and over‑torqued bolts during routine maintenance on off‑road equipment like cranes, tractors, excavators, bulldozers, and mining trucks.
 
The fasteners were located in confined areas and required high, controlled torque to prevent damage or injury.
 
Manual tools and impact methods presented safety risks and inconsistent torque control. Excessive force could damage fasteners or surrounding components, while insufficient torque made bolt removal difficult and time‑consuming.

Solution Presented

A Bolting Systems TWHC1 hydraulic torque wrench was supplied with a PE55TWP hydraulic pump to deliver controlled, high‑torque output. The hydraulic torque wrench system allowed technicians to apply precise torque to seized fasteners, breaking them free safely and efficiently.
This type of heavy equipment maintenance challenge is solved using hydraulic torque wrench systems that provide repeatable torque control while reducing operator strain and safety risk.

Results

By applying a hydraulic torque wrench system in place of manual or impact methods, service teams typically achieve 25-40% faster loosening of seized fasteners, reducing overall maintenance time on heavy equipment. Controlled hydraulic torque improves efficiency by reducing labor requirements by an estimated 15-30%, while also minimizing rework caused by damaged bolts or studs. The use of repeatable, high‑torque output hydraulic tools significantly reduces operator strain and kickback risk, improving jobsite safety. This consistent and more predictable bolt removal method also contributes to 10-25% reduction in total equipment downtime during bolted joint maintenance, helping service centers return equipment to operation more quickly and reliably.

Other Applications

• Off‑highway equipment maintenance
• Heavy machinery service centers
• Mining and construction equipment
• Industrial maintenance and repair operations

Key Metrics

System Impact & Engineering Advancements

Performance Metrics & Key Achievements

40% 1

Faster Bolt Loosening

30% 2

Labor Reduction

25% 3

Downtime Reduction

Improved Safety & Ergonomics

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1. Estimated versus manual or impact-tool loosening of seized fasteners on comparable heavy equipment; not a measured result.
2. Estimated from reduced operator strain and labor time versus manual methods on comparable equipment; not a measured result.
3. Estimated from faster, more consistent fastener removal reducing rework-driven downtime; not a measured result for this job.
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