Whether you're dealing with a cracked windshield from flying debris, shattered side glass from job site hazards, or simply upgrading to better protection, knowing how to properly install door glass on your Bobcat skid steer or track loader is an essential skill for equipment owners and operators.
Replacing the door glass on your Bobcat skid steer or track loader yourself can save you hundreds compared to dealer pricing. Here’s a practical, no-nonsense guide to get the job done safely and efficiently.
Before You Begin
- Check your machine model. Bobcat doors vary by model. Always consult your operator's manual for specific instructions.
- Order the correct parts. Use your machine’s model number and glass part number to find affordable aftermarket glass online. Parts Online is a great source for affordable aftermarket bobcat replacement glass.
Note: You can save approximately 50% on parts by purchasing quality aftermarket components through online retailers like Parts Online. Search using your Bobcat's specific model number and glass part number to find compatible alternatives. For the S650 Skid Steer or the T770 Track Loader for example, aftermarket glass is available for $176.21 USD or $241.99 CAD, compared to $329.50 USD or $452.40 CAD for genuine Bobcat glass.
Essential Tools and Materials
Successful door glass installation requires specific tools and materials to ensure proper fit, seal, and function. We recommend gathering everything beforehand to streamline the process.
Required Tools:
- 9/16" socket for wiper cap nuts
- 11/16" socket for wiper assembly
- 11mm socket/wrench for handle bolts and lever pins
- Allen key set for hinge bolts
- Adjustable wrench for holding components
- Needle nose pliers for glass fragment removal
- Safety glasses and cut-resistant gloves
- Clean shop rags or paper towels
- Small container of dish soap or hand soap
- 5-in-1 scraper tool for cleaning surfaces
Materials Needed:
- Replacement door glass (aftermarket glass can save you a lot here)
- New door seal/weatherstripping (purchase the compatible aftermarket seal with the glass)
- New frame (if original is bent or damaged)
- Replacement hardware if any pieces are damaged
- Glass cleaner for final cleaning
Always verify part numbers against your machine's serial number before ordering replacement glass. Bobcat equipment spans decades of production with various cab configurations, and using incorrect glass can compromise fit and safety. Aftermarket glass is perfectly suitable as a replacement for OEM glass, and in many cases is a better choice because they are similar quality and aftermarket glass is much more affordable.
Safety Precautions and Preparation
Safety should be your top priority when working with glass components.
- Always wear safety glasses and cut-resistant gloves when handling glass panels.
- Work on a flat surface.
- Position your Bobcat on level ground and engage the parking brake.
- Lower all attachments to the ground and shut off the engine.
- Allow the machine to cool if it has been operating, as hot surfaces can affect sealant application and glass expansion.
Step-by-Step Installation Process
Step 1: Remove the Broken Door Assembly
- Start by opening the door normally to access all components.
- Detach the piston by removing the spring clip using needle-nose pliers.
- Pull the piston free and set it aside.
- Next, disconnect the electrical connector for the windshield wiper by pushing in the release tab and pulling the connector apart.
- To remove the complete door assembly, simply lift it up off the hinges. Most Bobcat doors use a pin-style hinge system that allows easy removal without tools.
Step 2: Disassemble the Windshield Wiper System
- Remove the top cap covering the wiper assembly using a 9/16" socket to remove the retaining nut.
- Use an adjustable wrench to hold the wiper arm while removing the nut.
- Lift off the cover and remove the lower nut (typically 11/16") to free the wiper assembly.
- Keep all wiper components together and organized for easy reassembly.
- Remove the large retaining nut by first unclipping the housing and disconnecting the electrical connection.
- You may need to hold the assembly steady while removing this nut due to the pivoting mechanism.
Step 3: Remove Door Hinges
- Remove the safety caps and emergency release levers by twisting them off. These are safety features that allow door removal in emergency situations.
- Use an adjustable wrench to hold the bolt underneath each hinge while using an Allen key to remove the hinge bolts.
- To remove the release lever mechanism, remove the side bolt (typically 11mm) and push out the connecting pin.
- Clean and save all hardware for reuse.
Step 4: Remove Door Handle Assembly
- Flip the door frame over to access the handle mounting bolts.
- Remove the two bolts (typically 11mm) that secure the door handle assembly.
- The electrical wire can remain connected during this process. Several small components may come out with the handle, so keep them organized for reassembly.
Step 5: Inspect Door Frame for Damage
- Carefully inspect the door frame for any bending or damage, especially around the windshield wiper mounting area. Even minor frame distortion can create pressure points that will cause the new tempered glass to shatter. If the frame is bent, it must be straightened or replaced before installing new glass.
- Clean all mounting surfaces thoroughly, removing any old sealant, glass fragments, or debris. The frame must be completely clean for proper seal adhesion.
Step 6: Transfer Components to New Frame (If Needed)
- If your frame was damaged and you needed to purchase a replacement, transfer all electrical components, windshield wiper motor, and rubber gaskets from the old frame to the new one.
Step 7: Position the New Glass
- Carefully remove the new glass from its protective packaging and inspect for any damage.
- Position the glass slowly over the frame, ensuring it aligns properly with the windshield wiper arm opening. The glass should sit naturally without forcing or applying pressure.
- Place rubber gaskets at every contact point between the glass and metal frame. This is critical because tempered glass will shatter easily if it contacts metal directly.
Step 8: Install Hinges
- Begin reassembly by installing the hinge components. Slide the protective sleeves between the glass and hinge mounting points, ensuring the rubber gaskets are properly positioned.
- Insert the hinge bolts and hand-tighten only at this stage.
- Install the handle spring first, followed by the orange safety handle. Twist to lock in place, then install the protective cover.
Step 9: Install Door Handle
- Place the plastic components back into the handle area, then secure the door handle assembly with the original bolts. Ensure proper alignment before fully tightening.
Step 10: Reinstall Windshield Wiper Assembly
- Reconnect all electrical connections to the wiper motor and power switch.
- Secure the wiper assembly cover back in place. Test the wiper operation before proceeding.
Step 11: Install Door Seal
- Install the new rubber door seal around the entire perimeter of the glass.
- Use a small amount of dish soap on the seal edges to help it slide into position more easily.
- Start at the bottom corners, then stretch to the top corners, and finish with the angled sections last, as these are easier to roll into place.
Step 12: Reinstall Door
- Carefully lift the completed door assembly back onto your Bobcat machine’s hinges. Having a helper makes this step much easier and safer.
- Reconnect the door piston and install the retaining spring.
- Make electrical connections and install the metal latch sensor piece.
Step 13: Test Door Operation
- Work the door seal slowly on the first few closings, as new seals are typically tight.
- Apply a small amount of soap to the seal track if needed to help it flex and slide properly. In cold weather, be extra careful as seals become stiffer and more prone to damage.
- Test all door functions including opening, closing, latching, and windshield wiper operation before considering the job complete.
Common Installation Challenges and Solutions
Even experienced technicians encounter challenges during door glass installation. Understanding these common issues and their solutions can save time and prevent costly mistakes.
- Frame Damage Problems: The most critical issue is frame damage that may not be immediately visible. Even minor bending around the windshield wiper assembly can create pressure points that will cause the new tempered glass to shatter. Always carefully inspect the frame before installation and straighten or replace damaged sections.
- Seal Installation Difficulties: New door seals are typically tight and difficult to install. Use a small amount of dish soap on the seal edges to help them slide into position. Start installation at the bottom corners, stretch to the top corners, then finish with the angled sections, as these roll into place more easily.
- Component Organization: With multiple small parts removed during disassembly, organization is crucial. Keep wiper components together, save all hardware in containers, and take photos during disassembly if needed to remember proper reassembly sequence.
- Glass Handling Safety: Tempered glass shatters into small pieces when broken, which is safer than large shards but still requires careful handling. Always wear safety glasses and gloves, and avoid creating pressure points between glass and metal components.
- Cold Weather Considerations: In cold conditions, seals become stiffer and more prone to damage. If possible, perform installations in moderate temperatures, or allow extra time and care when working with seals in cold weather
Pro Tips For Success
- Save on parts by ordering aftermarket glass using your part number. You can expect ~50% savings compared to dealer pricing.
- Regular cleaning with appropriate glass cleaners prevents buildup that can damage seals or moving components. Avoid abrasive cleaners or tools that might scratch the glass surface.
- Lubricate sliding mechanisms according to manufacturer recommendations, typically every 100 operating hours or monthly, whichever comes first. Use only recommended lubricants, as improper products can attract dirt or damage seals.
- Replace damaged seals promptly to prevent water infiltration and maintain cab comfort.
- Check mounting hardware periodically and retighten as necessary to prevent loosening from vibration.
- Store replacement glass and seals in clean, dry conditions away from extreme temperatures. Proper storage prevents damage and ensures components are ready when needed for future maintenance.
Frequently Asked Questions
What is the typical cost of replacement glass for Bobcat machines?
The cost of replacement door glass for Bobcat skid steers and track loaders can vary based on the type of glass, model compatibility, and whether you opt for OEM or aftermarket parts.
Here's a breakdown for a popular part, the Skid Steer Loader Door Glass (Part Number 7120401):
- OEM is priced at $329.50 USD and $452.40 CAD on Bobcat’s website
- Aftermarket is priced at $176.21 USD and $241.99 CAD on Parts Online
To find the right piece of glass for your machine, header over to Parts Online and search for your part number.
Can I use aftermarket glass instead of OEM Bobcat parts?
Aftermarket glass is often more affordable and readily available, with no loss in quality. At Parts Online, we stock high-quality replacement glass that meets or exceeds OEM standards, ensuring a safe fit and performance. Always check compatibility before ordering.
Do I need to buy a new door seal?
Your door seal may need replacement if you see any damage or wear. We recommend purchasing a new seal as a functional door seal is necessary for a secure, weather-tight fit. Check it for damage and order it with your door glass. Parts Online offers a special discount on Door Seal 7281063 when ordered with Door Glass 7120401.
What's the difference between tempered and laminated glass for Bobcat applications?
Tempered glass is heat-treated for strength and shatters into small, relatively harmless pieces when broken. Laminated glass consists of two glass layers with a plastic interlayer that holds pieces together when broken. Most Bobcat door applications use tempered glass for side and rear panels, while some windshields may use laminated glass for improved impact resistance.
Do I need special tools to install Bobcat door glass?
While basic hand tools can handle most installations, glass suction cups or lifting handles make the job safer and easier. Professional glass installers use specialized tools, but most installations can be completed with standard shop tools and careful technique.
How do I know if my door frame is damaged and needs repair before glass installation?
Inspect the frame for cracks, severe corrosion, bent sections, or missing mounting points. Minor surface rust can usually be cleaned and treated, but structural damage may require professional repair or frame replacement before installing new glass.
Can I install door glass in cold weather?
Cold temperatures can affect sealant performance and glass thermal expansion. If possible, perform installations in moderate temperatures (50-80°F) for optimal results. If cold weather installation is necessary, allow sealants extra time to cure and avoid operating sliding mechanisms until components reach normal operating temperature.
What should I do if the new glass doesn't fit properly?
First, verify you have the correct part for your specific Bobcat model and serial number. If the part number is correct but fit is poor, check for frame damage or debris preventing proper seating. Sometimes minor adjustments to mounting points can resolve fit issues, but major modifications should be performed by qualified technicians.
Where can I find the correct part number for my Bobcat glass?
You can usually find the part number:
- On the glass itself (a small etched code in the corner)
- In the Bobcat parts manual for your model
- Or by contacting the Parts Online support team for help matching your machine’s model and year to the correct replacement glass.
How long does door glass installation typically take?
For most Bobcat models, installing replacement glass takes 30 to 60 minutes, depending on the size and complexity of the panel. Larger or curved glass panels may require additional time and a helper for safe installation.
Conclusion
Installing door glass on your Bobcat skid steer or track loader is a manageable maintenance task that significantly impacts operator safety, comfort, and equipment value. Taking time to properly clean surfaces, install weatherstripping correctly, and align components precisely will result in a professional-quality installation.
Regular maintenance and inspection of your door glass system will help identify potential issues before they become costly problems. Keep spare seals and hardware on hand for routine maintenance.
You can find affordable, high-quality aftermarket replacement glass for your Bobcat skid steer or track loader at Parts Online here. Our glass is designed to meet or exceed OEM quality. If you have questions about installing Bobcat door glass, our experts at Parts Online are ready to assist. Use our contact form on our website, call us at 1-(855) 976-4144 or email sales@partsonline.com for help.