JCB 260 Windshield and Escape Window: A Detailed Guide

[MikePhua]

Overview of the Challenge
Replacing the front windshield—or escape window—on a JCB 260 skid-steer involves more than just swapping out glass. The original window is firmly glued in place, requiring careful removal and precise preparation before installing a new pane. Balancing safety, durability, and convenience is key and opens up multiple options.
Replacement Methods and Materials
Here’s how professionals and experienced users typically approach the task:

• Removal and Reinstallation Process
  • First, cleanly remove all broken glass and carefully scrape off existing adhesive.
    
  • Use a high-quality automotive-grade adhesive—most commonly 3M Window Weld—to bond the replacement glass securely, following precise installation timing before the glue sets.
    
    
• Material Options
  • Tempered OEM Glass offers factory-standard strength and clarity. It fetches respectable pricing—for example, around $100 for the replacement pane.
    
  • Standard Safety Glass (similar to car windshields) is often preferred due to its tendency to crack rather than shatter; it’s also more affordable.
    
  • Polycarbonate (e.g., Lexan®/SUPERCOAT™): Highly durable, significantly lighter, and nearly unbreakable. Excellent for demanding jobs but more prone to scratches and clouding over time.
    
    

Material Comparison: Pros & Cons

• Tempered OEM Glass
  • Pros: Clear, OEM appearance, known specifications
    
  • Cons: More expensive, heavier, risks shattering under impact
    
• Safety Glass (Auto-type)
  • Pros: Affordable, cracks safely, easier to source from local glass shops
    
  • Cons: Less rigid, not specialized for equipment environments
    
• Polycarbonate (Supercoat)
  • Pros: Lightweight, 250–260× stronger than glass, excellent impact resistance, reduced noise, better light transmission, thermal benefits
    
  • Cons: Higher cost, can scratch or cloud; may require anti-scratch coatings
    
    

Specification Snapshot

• 332/X5157 Front Windshield (Tempered Glass)
  • Thickness: ~6 mm
    
  • Dimensions: ~800 mm (width) × 980 mm (height)
    
  • DOT-certified, green tinted tempered glass
    
    
• Polycarbonate Replacements
  • Available in ¼″, 3/8″, and ½″
    
  • Replaces OEM parts like 400/E8646, 332/X5157, 402/P5831
    
  • Coated with abrasion-resistant SUPERCOAT™, milled edges, retains OEM fit, and supports factory hardware
    
    

Installation Workflows

• Steps for DIY or Installer
  • Clear all glass residue and adhesive.
    
  • Clean, pre-fit, and secure the area.
    
  • Apply adhesive or use gasket, depending on material type.
    
  • Set the replacement pane carefully and secure until the adhesive cures. Have all materials and tools ready beforehand due to limited working time.
    
    

Real-Life Anecdote
A JCB owner smashed his windshield on-site and pondered between gluing the $100 OEM piece or having a local shop install something quick and cheap. A seasoned operator advised against plastic substitutes unless the machine was destined for demolition work, noting the tendency of polycarbonate to scratch quickly. In the end, he chose tempered auto glass, replaced it efficiently, and saved the stronger Lexan option for heavy clearing jobs in the future.

Maintenance Tips & Recommendations

• Keep a spare windshield and adhesive kit in your parts inventory for emergency replacements.
  
• Use tempered OEM or safety glass if clarity and cost are priorities for light-duty work.
  
• Opt for polycarbonate when operating in high-impact environments like forestry or brush clearing.
  
• Clean replacements gently—use non-abrasive cleaners, and avoid aftermarket films that degrade coatings.
  
• Follow precise cure times and environmental conditions to ensure optimal bond strength.
  

Summary List

• Removal: Strip old glass and adhesive completely.
  
• Adhesive: Use high-quality products like 3M Window Weld, and act within working time.
  
• Material Choices:
  • Tempered OEM glass: original fit, clear view, heavier, more costly
    
  • Safety glass: affordable, safe fracture behavior, easily sourced
    
  • Polycarbonate: lightweight, impact-resistant, but needs scratch care
    
• Dimensions Example: Standard tempered pane = 6 mm x ~800 mm × 980 mm
  
• Choose Based On: Operating conditions, budget, longevity needs
  
• Pro Tips: Always prep thoroughly, store spare parts, and clean carefully to preserve coatings and visibility quality.