Bobcat 763 was one of the revolutionary skid-steer loaders of its time. Unsurprisingly, this compact yet powerful loader still makes people eager to take a chance to ride this. However, as an older model, problems with Bobcat 763 have become concerning.
So, what are those Bobcat 763 problems? After spending several years as an expert technician, I have seen the vast majority of Bobcat 763 owners complain about malfunctioning Auxiliary Hydraulics, fuel starvation, AHC controller malfunctioning, Faulty seat bar, etc.
However, if the Bobcat 763 is still a beloved machine to you, don’t fret. It’s time to find the solutions, and luckily, you’ll get that from this article. Alongside, we’ll discuss its specs and features. Let’s go.
Overview of Bobcat 763 Skid-Steer Loader
Bobcat introduced the 763 skid-steer loader in 1994. It has been a long time, right? However, this buddy still roars in many people’s workplaces, resulting from its well-judged specs.
So, let me show you its specifications. And, of course, this basic information is essential before you put your hand on this beast.
| Engine Configuration | 134.3cu in, 46 HP, 4-cylinder |
| Cooling System | Liquid cool |
| Fuel | Diesel |
| Rated Operating Capacity | 1500lb. (680 kg) |
| ROC with optional counterweight | 1600 lb. (726 kg) |
| Operating Weight | 5368 lb. (2435 kg) |
| Tipping Load | 3000 lb. (1361 kg) |
| Hydraulic Pump Capacity | 15 gal/min |
| Fuel Tank Capacity | 14 gal. (53 L) |
| Transmission | Hydrostatic, four-wheel drive. |
| Max Travel Speed | 7mph |
| Height To Top Of Cab | 77.3 in. (1963 mm) |
| Height to Bucket Pin | 114.5 in. (2909 mm) |
Key Features and Benefits Of Bobcat 763
Knowledge is power, right? So, before moving on to the common issues with the Bobcat 763 skid-steer loader, I want to point out some of its attractive features and benefits.
- Powerful 46-HP engine for tackling tough excavation and heavy loads.
- Easy-to-mount 30 attachments for quick swap.
- Roomy cabin for operators of all sizes.
- Fully enclosed cab with a heating system.
- Excellent visibility from every side of the operator chamber.
What Are The Common Bobcat 763 Problems?
Bobcat 763 users experience more or less various types of issues, including both mechanical and electrical. However, a few issues are more recurrent than others. Below, I’ve listed some of the most common Bobcat 763 issues:
- Malfunctioning Auxiliary Hydraulics
- Intermittent traction lock engagement
- Fuel starvation
- AHC controller malfunctioning
- Faulty seat bar
Troubleshooting And Fix For Common Issues With Bobcat 763
Have you ever experienced any of the Bobcat 763 issues we mentioned above? Or, are you afraid of spending your hard-earned cash on an old Bobcat 763 knowing those issues?
Look, facing problems is usual for any heavy-duty equipment; you just need the right solution. Below, I have described the solutions:
#1- Auxiliary Hydraulics Issue
Issues with Auxiliary Hydraulics in Bobcat 763 have been annoying numerous owners over the years. Personally, the most common issue I have seen in this case is regarding the 4-in-1 bucket.
In most cases, the machine fails to open the 4-in-bucket while letting the operator close it normally. Surprisingly, the opposite also happens.
According to experts, users often replace coils and relays, install a new hand-controlled switch, and reseal the valves but find no result.
So, after carefully observing the issues, I have reached a solution that seems to be universal for these types of issues.
Not that this is more of a diagnosis or verification approach rather than completely fixing the issue. Based on what you get from it, you can choose the right fix. Here is what you have to do:
- Step 1: First of all, get a set of test lights installed on both auxiliary hydraulics. Make sure they’re tapped into the coils.
- Step 2: Set up a wiring line to the cab so that you can monitor these lights while operating your machine.
- Step 3: Now press the auxiliary switch and check whether the lights come on. This will help you to verify whether a stuck stem or an electrical or controller issue causes that issue.
- Step 4: If the test lights stay turned on, the main culprit is the stems. So, replace or repair them immediately.
- Step 5: Now, if the lights go off right after illuminating once, check the wiring harness connecting the controller and the stems.
#2- Intermittent Traction lock engagement
A significant number of Bobcat 763 owners have reported traction lock issues, especially intermittent engagement of the traction lock. As an expert in this field, it has also grabbed my attention.
In this case, the traction lock works inconsistently. That means it sometimes engages but releases immediately.
Based on my observation, the issue is mostly related to a bad safety interlock switch or harness. Here is what you can do to eliminate the issue:
- Step 1: Check the condition of your traction lock solenoid. Over time, this component can become worn out or contaminated with debris. Inspect the solenoid for any signs of damage or corrosion and replace it if necessary.
- Step 2: Ensure that all wiring connections related to the traction lock system are secure and free from damage. Look closely at each wire and connector in the system to identify potential issues.
- Step 3: Don’t forget to examine the traction lock switch itself. If this switch becomes faulty or worn out, it could lead to intermittent engagement problems. Replace the switch if needed to restore reliable operation.
#3- Fuel Starvation
Like many older Bobcat skid-steer loaders, I have seen people complain about the fuel starvation issue in the Bobcat 763. However, symptoms of the issue widely vary.
For instance, in some cases, the machine stays idle without issues, but it struggles to rev up. In other cases, the loader suddenly shuts off as if the machine is running out of fuel.
No matter what the consequences are, I found the issue is centered on the fuel supply system.
Generally, Bobcat skid-steer loaders like the 763 have a flexible fuel pickup tube that often tends to be broken or fallen off. This is the most prominent cause of the issue here.
Check out the video for a detailed discussion:
Alongside, a bad fuel injection pump can also be responsible. Let me show you how to deal with the issue:
- Step 1: I suggest you start by inspecting the pick-up tube inside the fuel tank. If the tube is broken or has fallen off, repair or replace the tube.
- Step 2: In case the tube appears to be in good shape, detach the rubber primer bulb from the line connected to the tank and attach a length of fuel hose to the inlet of the primer bulb.
- Step 3: Place this hose into a clean container filled with fuel. Start the engine while simultaneously pumping the primer bulb, as this can help diagnose any issues with a failing lift pump. Your primary objective here is to verify that fuel is properly reaching the injection pump.
- Step 4: If, despite these steps, the engine continues to run poorly, it strongly indicates a malfunctioning injection pump.
#4- Advanced Hand Control (AHC) Controller Issue
The issue in the Automatic Hand Control (AHC) unit of Bobcat 763 has made numerous owners concerned. Malfunctioning in this controller often leads to an abnormal lift or tilt mechanism.
As I consulted with the dealer, they recommended replacing the actuator. However, the result was nothing.
Even after replacing the AHC valve, the result was the same, I mean nothing effective. So, I made up my mind to go deeper and found the controller unit itself was faulty.
In some cases, a joystick with broken wiring can also cause a similar issue. However, you shouldn’t get your hands on this big guy, controller first.
Rather, I suggest you test the controller using a multimeter to confirm whether it’s faulty.
If the reading seems abnormal, change the controller unit. In either case, repairing the joystick wiring will resolve the issue.
#5- Faulty Seat Bar
I personally admire the seat bar safety mechanism used in Bobcat skid-steer loaders, even in such an old machine as the 763.
However, malfunctioning in this tiny component can be a huge nuisance, as many operators face.
For instance, when the sensor is faulty, the machine stops out of the blue, and any function doesn’t react at all.
In my opinion, the root cause of the problem lies in a malfunctioning lap bar sensor. If this is what occurred in your situation, it will be essential to replace the sensor.
However, the internal spring within the switch can weaken and lead to intermittent complications similar to this one. Here, replacement is the only option you have.
FAQs
Is there anything else whispering in your mind to know about? Maybe the following FAQ section got this.
Does a 763 Bobcat have high flow?
Yes, the Bobcat 763 H series contains a line of High-flow skid-steer loaders. It can provide 25 gal/min of flow due to the inclusion of a secondary auxiliary hydraulic pump.
Why is my Bobcat 763 lift and tilt not working?
The lift and tilt mechanisms in a Bobcat 763 can malfunction or fail due to several causes. These include a bad lift or tilt solenoid, faulty seat bar wiring or switch, a bad sensor, etc.
Why is my bobcat 763 not starting?
A Bobcat 763 may fail to start if the start relay switch or the starter motor is bad or faulty. However, if they seem okay, but the machine isn’t yet starting, maybe the fuel flow has been interrupted.
Final Words
I have tried my best to explain the most common Bobcat 763 problems and give the solutions as simple as possible. However, not all the issues are equal in terms of severity.
If you think troubleshooting an issue is complicated and you lack confidence, never hesitate to call a professional.
Read also: 5 Common Bobcat 863 Problems ( With Specs & Solutions)
Meet Emily, a true garden lover who has a passion for all things nature. With a deep understanding of plants and lawns, Emily’s love for gardening started at a young age, spending her summers tending to her grandparents’ garden.