You might know that Bobcat 753 is one of the oldest yet most popular skid-steer loaders out there. While we used to hear the phrase “old is gold,” mechanical equipment often encounters issues over time.
Consequently, I have seen many owners or operators complain about various Bobcat 753 problems. Most of the problems are related to right-forward drive control, malfunctioning lift mechanisms, faulty traction lock systems, sudden fuel emptying, and soon.
Hence, whether you have already owned a Bobcat 753 loader or are willing to purchase an old one, in-depth knowledge of these issues and the loader itself is essential. Luckily, you’ll get everything in this article. So, let’s jump.
Bobcat 753 Specifications
Are you familiar with your little beast Bobcat 753’s capacity and other key specs? Don’t worry, I have structured a table below, which shows all the deets good to know before dealing with Bobcat 753 problems.
| Engine Configuration | 43.5 hp (32 kW), 134.3 cu in, 4-cylinder |
| Cooling System | Liquid cool |
| Fuel | Diesel |
| Rated Operating Capacity | 1300 lb. (590 kg) |
| ROC with optional counterweight | 1400 lb. (635 kg) |
| Operating Weight | 4740 lb. (2150 kg) |
| Tipping Load | 2600 lb. (1179 kg) |
| Hydraulic Pump Capacity | 14.3 GPM (54 L/min) |
| Fuel Tank Capacity | 14 gal. (53 L) |
| Transmission | Hydrostatic, four-wheel drive. |
| Max Travel Speed | 6.6 MPH (10.6 km/hr.) |
| Height To Top Of Cab | 77.04 in (1956 mm) |
| Height to Bucket Pin | 109.1 in. (2771 mm) |
Key Features of Bobcat 753
I have mentioned some core specs of the Bobcat 753 in the earlier section. Now, let me introduce a few of the notable features of this skid-steer loader. Hopefully, this will help you to have a good grasp on your machine.
Comfortable Cabin Design
Okay, I’m starting with the cabin design of the Bobcat, especially the G-series that I had the chance to work with. The cabin design of this model is really operator-centric, which ensures maximum comfort and functionality.
With its wide opening, hopping in and out is a breeze. I was just amazed that they’ve added a fancy new seat bar that not only keeps you safe but also doubles as a comfy armrest for operators of all shapes and sizes.
Bobcat has incorporated an AC/heating unit depending on the weather conditions to maximize user convenience. And yes, you can adjust how much airflow or warmth you would like in your cab.
Doubled Illumination and Convenient Instrument Panel
Did I mention that they’ve beefed up the work lights? Now, you’ll have twice as much light to do your job, even when it’s dark outside.
Plus, they’ve spruced up the instrument panel, making it easy to read and use. And if that wasn’t enough, they’ve thrown in some extra options such as real-time clock, diagnostic capability, job clock, multi-language capability, and so on.
Compact Design with Powerful Engine
Different individuals have diverse needs and preferences. In that sense, the Bobcat 753 has a unique fan base. And this will be understood if you check its dimensions and engine configuration.
Bobcat 753’s length, width, and height are as follows:
- Length (with bucket) 120.5 in. (3059 mm),
- Width (with bucket) 55.0 in. (1398 mm)
- Height 77.0 in. (1956 mm
See how compact it is! Well, Bobcat has incorporated a 43.5 hp (32 kW), 134.3 cu in, Kubota V2203-E engine with this machine. And guess what? Its rated operating capacity is 1300 lbs.
So, as far as I have realized, this compact yet powerful loader is more than enough for those who need to work in a tight space while dealing with massive loads up to 1500 lbs.
30 Attachments for Versatile Operations
I am truly impressed by the versatility of this loader. Thanks to its universal hitch, it can be connected to a whopping thirty different attachments.
Just imagine all the possibilities; you can use it for farming one day and switch to construction or land clearing the next.
And the best part is that Bobcat has not one or two but seven different bucket designs to choose from. All you have to do is pick the right bucket for your specific task, and you’re good to go.
Two Hand Levers
Frankly speaking, Bobcat 753 catches the show in terms of maneuverability. And here, I must credit two hand levers used in this loader.
With these, you can get precise control over forward and backward speed. Alongside, the hydraulic pedals feature a two-foot design that helps to regulate the lift arms accurately.
What Are the Common Bobcat 753 Problems?
Depending on the age of the machine and usage pattern, the Bobcat 753 skid-steer loader can encounter diverse issues. However, we have listed some of the issues most commonly encountered by Bobcat 753 owners.
- Right forward drive control issues
- Malfunctioning lift mechanism
- Traction lock problem
- Sudden fuel emptying
- Defective BOSS system
5 Solutions to Most Common Bobcat 753 Problems
Now you know about some of the most common Bobcat 753 problems. But how should you deal with any of these issues? Hold on, I have organized some solutions for you below.
#1 Fixing the Right Forward Drive control issue
The most significant issue regarding the Bobcat 753 is related to its drive control. As many owners reported, the right-drive control portion often malfunctions.
In most cases, when trying to move forward or take turns, the right drive control feels too jerky and even doesn’t move at all. Surprisingly, it doesn’t show any complexity while going reverse.
From my observation, I would recommend the following approach to get rid of the issue:
- Step 1: First, check all linkages and the control valve to find leakage or whether anything is loose or damaged. If there is dirt in the combination valve screen, clean it.
- Step 2: Test the solenoids and controls. If solenoids are bad, replace them. The controls can also be worn out gradually. So, if there is any sign of wear, replace them.
- Step 3: If the problem persists, inspect the pump on the right side as the problem is occurring in this specified direction.
- Step 4: Installing a new pump might eliminate the issue now. However, if it still doesn’t work, your only option is to replace the motor.
If you’re a confident DIYer, check the video below to learn how to replace the drive motor
#2 Malfunctioning lift mechanism
Lift mechanism malfunction in Bobcat 753 is another widespread issue that bothered numerous owners.
As far as I have experienced, the lift arm raises at a certain level (approx. halfway up), but then it starts falling downward. No matter how hard I push the pedal, it doesn’t move.
The thing becomes more mysterious as there’s no fault code or any sign of abnormality in the tilt mechanism and other components such as lift linkage, hydro pump, and actuator.
However, after carefully analyzing the whole situation, I have found a solution to eliminate the issue. Below, I’m going to show the troubleshooting process step by step:
- Step 1: To begin troubleshooting, locate the wire connections leading to actuators for both lift and tilt at the control valve.
- Step 2: Disconnect both actuators and reconnect them to each other’s harness connection plugs. This way, you will effectively swap their functions.
- Step 3: Now, using the tilt control should activate lift movement. If it does, there is an electrical issue with the lift system.
- Step 4: However, if no change in behavior occurs, it suggests that there may be an internal problem within the control valve itself.
#3 Traction lock problem
Have you ever found your Bobcat 753 just stuck all of a sudden? No matter how much you try, it just moves an inch and acts as if it is locked, right? If yes, I can feel your pain.
In this situation, the first thing you have to do is to check whether the computer is showing any active warning.
Generally, you’ll notice a warning saying, “Traction Lock holds open circuit.” As far as I know, the issue is caused by either a Defective solenoid, faulty controller, or Damaged mainframe harness.
Whatever the cause, trying the following steps might get your loader back to work.
- Step 1: Alright, so the first thing you have to do is find that fuse and relay box inside the cab. It’s right below and in front of the seat.
- Step 2: Here, you’ll see a 30 amp fuse and a relay for the traction lock. Look at them and see if they’re burnt or damaged from all that heat coming from the hydraulics.
- Step 3: If they’re still good, follow the wires. These wires should lead you directly to the solenoid responsible for power transmission in this system.
- Step 4: After inspecting the solenoid, if you see that it is messed up, you’ll need to replace it.
#4 Sudden Fuel Emptying
I have seen many Bobcat 753 owners complain about a notorious issue: sudden fuel emptying. Seems a bit weird, right? Let me explain.
In such instances, the loader acts as if the fuel tank is empty because the engine cranks but doesn’t start. It happens early in the morning when starting a day at work or even shuts down in the middle of the session.
I even noticed some users had ¾ of fuel in the tank, but the engine suddenly shut down and wasn’t starting. From my experience, the issue is related to the fuel supply.
So, the fixing process is concentrated on the components engaged in fuel flow. Look at the below for the process:
- Step 1: In the beginning, verify whether there is any presence of fuel at the bleed screw on the injector pump.
- Step 2: Locate the small lever on the fuel pump and gently move it up and down while ensuring that you keep an open screw.
- Step 3: Alternatively, you may find a squeeze bulb positioned along with your oil pan in your fuel line setup. This may initiate ignition after several attempts.
- Step 4: If ignition does not occur as expected despite previous steps taken correctly, this may indicate a potential malfunction or blockage of the shut-down solenoid responsible for regulating fuel flow toward injectors.
- Step 5: Replace the shut-down solenoid.
#5 Defective BOSS system
The BOSS system is quite an old attachment used in earlier Bobcat 753s. Defect in this system has concerned many owners. In most cases, the screen goes black and shows no info.
Sometimes, it may show only dashes and dots instead of necessary gauges. From my perspective, this issue can be solved in the following process:
- Step 1: Check and confirm that the BOSS fuse in the fuse block is functioning correctly.
- Step 2: Inspect all connectors on the BOSS controller individually for any signs of corrosion by removing each one.
- Step 3: You will find numerous ground connections to the chassis near this area. Take out these connections and thoroughly clean their terminals.
- Step 4: Polish and brighten up the chassis before reinstalling these connections securely.
- Step 5: Now, refer to your manual extract, which provides resistance readings for four of your loader’s senders.
- Step 6 Examine these specific senders on your loader to identify any faulty ones among them.
- Step 7: On your LCD, utilize a voltmeter to check if pin A has a voltage reading of 5V. If you notice a low voltage reading on pin A, it indicates a need for replacing the fuse.
FAQs
For any additional questions or concerns regarding the Bobcat T450 and its common issues, check the FAQ section below.
What kind of hydraulic fluid does a G-series Bobcat 753 take?
The AW 32 Hydraulic Oil Fluid (ISO VG 32, SAE 10W) is the recommended choice for the 753 G-Series Skid-Steer Loader, and it will require around three 5-gallon buckets to meet its hydraulic oil needs.
Why does Bobcat 753 keep losing power?
A clogged fuel pickup might be causing this issue. Another possible cause could be a collapsed fuel primer bulb. Also, if the fuel shutoff lever on the injection pump is not very close to the stop in the run position, it could cause a voltage issue.
How to Fix a Hydraulic Leak 753 Bobcat Skid Steer?
On Bobcat 753s, the hose from the pump to the valve is always causing leaks because it keeps rubbing against a bunch of stuff. If you see any signs of leakage, just take it out and swap in a new O-ring. That should fix things up.
Final Words
As one of the oldest skid-steer loaders, the Bobcat 753 skid-steer may experience several common problems. However, with proper maintenance and troubleshooting techniques, these issues can be easily resolved.
In turn, you can get the most out of your little beast. As an expert in this field, I recommend regularly checking and cleaning filters, ensuring proper fluid levels, and inspecting both mechanical and electrical parts for any signs of damage or wear.
Additionally, following recommended operating procedures and seeking professional assistance when necessary can reduce the likelihood of encountering major issues.
Read also: 5 Most Common Problems With Bobcat S70 (+Troubleshooting)
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.