Cat 236B skid steer loader: Problems and solutions (2022)

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Home / Skid Steer Loaders / Caterpillar Skid Steer Loaders / Cat 236B

  • SPECIFICATIONS
  • MAINTENANCE
  • TROUBLESHOOTING

Cat 236B skid steer loader: Problems and solutions (1)The Cat 236B skid steer loader driveline system components: a 201.2 cu.in (3.3L) Caterpillar 3044C DIT four-cylinder direct injection turbocharged diesel engine with a rated power of 70 hp (52 kW), and 1-speed or 2-speed transmission. The hydraulic system has a pump with a rated capacity of 21.9 gal/min (83 l/min). The system pressure is 3335 psi (230 bar). The Cat 236B is equipped with wet multi disc brakes, 100HS roller chains, and 12x16.5 tires. The skid steer loader has a maximum lift height of 122" (3100 mm) to hinge pin and dump height of 94.3" (2395 mm). The rated operating capacity is 1750 lbs (793 kg), and tipping load is 4012 lbs (1820 kg).

Engine Troubleshooting

Engine starts up hard or doesn't start
Air in the fuel lines - Bleed the fuel lines.
Fuel filter element clogging - Filter maintenance required.
Dirty or faulty injection nozzles - Service or change injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
The valve clearance is incorrect - Adjust valve clearance.
Faulty fuel injection pump - Repair or install new pump.

Engine stalls after starting
Dirty air filter - Service or replace the air filter.
Fuel filter element is clogged - Clean or replace the filter.
Fuel injection pump has loose connections - Tighten the connections.
Fuel injectors are faulty or clogged - Change or clean fuel injectors.
Fuel injection pump damage - Rebuild or change fuel pump.

Engine stops running suddenly
Engine is not preheated - Warm up the engine.
Fuel filter is plugged - Clean or replace the filter.
Air in fuel tank - Bleed fuel tank.
Fuel injection nozzles are faulty or clogged - Check injection nozzles and replace if required.
Timing of fuel injection pump is incorrect - Set up as recommended.

Engine stops while idling
Incorrect low idle speed adjustment - Correct low idle settings.
Fuel injection pump is broken - Rebuild or install a new injection pump.
Fuel injectors are dirty or defective - Clean or replace fuel injectors.
The valve clearance is incorrect - Adjust valve clearance.

(Video) Why I Hotwired My Cat 236B Skidsteer

Engine power is insufficient
Air cleaner is dirty - Clean or replace element.
Dirty or faulty injection nozzles - Replace injection nozzles.
Incorrect fuel injection pressure - Adjust to correct pressure.
Valve clearance is wrong - Check and adjust.
Low idle speed setting is not correct - Adjust as required.
Dirty fuel lines or hoses - Fuel lines and hoses need to be cleaned.
Cylinder head gasket is damaged - Replace cylinder head gasket.
Worn or damaged piston rings - Change piston rings.

Engine overheats
Low coolant level - Add coolant and check the components of cooling system.
Lack of engine oil - Add oil to the engine crankcase.
Damaged radiator cap or dirty radiator core - Install new cap or clean radiator.
Fan belt is loose or defective - Fan belt must be replaced.
Engine overloaded - Load reducing required.

Insufficient oil pressure
Oil level is insufficient - Need to add oil.
Oil filter clogging - Service or replace engine oil filter.
Incorrect engine oil Fill up with the correct oil viscosity.
Crankshaft bearing oil clearance is incorrect - Bearings need to be reinstalled.
Oil pump malfunction - Replace as required.

Engine noises or knocks
Engine oil level low - Check oil level and add oil as required.
Engine is not warmed up to the required temperature - Warm up the engine.
Improper fuel injection timing - Adjust fuel injection pump as required.
Wrong adjustment of low idle speed - Adjust the low idle speed.
Fuel injectors are dirty or defective - Clean fuel injectors or change it.
Connecting rod is misaligned or defective - Need to change or align the connecting rod.
Worn or scored pistons - Replace the pistons.

Drive System Troubleshooting

Drive system сan't work in either direction
Insufficient hydraulic fluid - Add fluid as required.
Damaged drive chain - Inspect drive chain and replace defective parts.
Damaged input drive shaft - Rebuild or change.
Worn or damaged relief valve - Repair or change.
Suction line or hydraulic filter is clogged - Service suction line or change hydraulic filter.
Foot or hand controls are defective - Change or repair.
Drive pump or motor malfunction - Repair or replace faulty component.

Low power
Plugged hydraulic oil filter - Replace or clean hydraulic filter.
Relief valve is open or defective - Close or replace relief valve.
Transmission components are damaged or faulty - Check and change defective components.
Defective input drive shaft - Replace drive shaft.
Air leaks in hydraulic system - Bleed air from hydraulic system.

Drive system keeps overheating
Hydraulic fluid level low - Checking hydraulic fluid level and add if necessary.
Clogged hydraulic fluid filter - Check, clean, or replace as required.
Faulty relief valve - Change or repair defective relief valve.
Drive pump or hydraulic motor is damaged - Repair or replace faulty component.
Clogged hydraulic oil cooler - Clean the cooling fins.
Transmission overloading - Load should be reduced.

Drive system is excessively noisy
Oil viscosity is too heavy - Use proper oil viscosity.
Air leaks in hydraulic system - Bleed hydraulic system.
Hydraulic motor or drive pump is worn - Repair or replace faulty component.
Worn or damaged mechanical components of drive system - Check drive system and change faulty components.

(Video) Changing Auxiliary Hydraulic switch on a CAT 236B

Hydraulics Troubleshooting

Hydraulic system is overheated
Hydraulic pressure incorrectly adjusted - Correct setting is required.
Unadjusted or defective main relief valve - Adjust the valve or replace if necessary.
Hydraulic oil contamination - The oil must be changed.
Not enough hydraulic fluid in the system - Need to add fluid.
Hydraulic pump is faulty - Repair or install new hydraulic pump.

Boom does not raise or lower
Lift controls are faulty - Replace or repair.
Hydraulic pump failure - Install new pump or repair it.
Hydraulic control valve failure - Replace or repair the valve.
Damaged hydraulic cylinder - Install a new boom cylinder or repair it.
Low hydraulic oil level - Check and refill the hydraulic oil.

Bucket tilt does not work
Bucket controls failure - Repair or change.
Hydraulic pump malfunction - Repair or change pump if required.
Hydraulic control valve malfunction - Repair or change hydraulic valve.
Hydraulic bucket cylinder is defective - Repair or replace cylinder.
Hydraulic oil level low - Check and refill the hydraulic oil.

Slow bucket or lift arm action
Hydraulic pump is faulty - Test pump flow rate and replace pump if required.
Leaking hydraulic cylinder - Install new cylinder seals.
Hydraulic oil is insufficient - Checking hydraulic oil level and add if necessary.
Hydraulic control valve is defective or set improper - Repair or adjust correctly.
Hydraulic pressure has dropped - Hydraulic pressure must be set correctly.

Lift arm or bucket is moving jerkily
Air in hydraulic system - Air bleeding is required.
Hydraulic oil filter is clogged - Clean or install new filter.
Dirty hydraulic fluid - The fluid must be changed.
Cylinder rod or tube is scratched - Change worn component.

Hydraulic pump is noisy
Lack of oil or hydraulic leakage - Repair hydraulic leaks or add oil as required.
Clogged hydraulic filter - Clean or install new filter.
Dirty suction line - Service the suction line.
Air enters the pump - Need to bleed air.
Pump components are faulty - Rebuild or install new pump.

Electrical Troubleshooting

Battery cannot be charged
Loose or corroded electrical wiring connections - Clean or tighten wiring connections.
Battery terminal connectors are faulty - Change terminal connectors.
Battery is worn - Change the battery.
Belt is loose or defective - Adjust belt tension or change the belt.

Starter motor turns slow
Low battery voltage - Recharge the battery.
Battery drains quickly - Service battery or change it.
Disconnected battery cables or bad terminals - Check battery wires and service or replace terminals.

Starter is not working
Battery is discharged or worn - Recharge or change battery.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Low battery capacity - Battery needs to be recharged.
Damaged starter motor - Starter should be changed.

(Video) CAT Skid steer coolant level check

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SKID STEER LOADERS SPECIFICATIONS

ASV

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Bobcat

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FAQs

How do you release hydraulic pressure on a Cat skid steer? ›

First you need to compress the top and bottom quick disconnect like this making sure you hear a

How do you reset a Cats skid steer? ›

Using the buttons below the up and down arrows highlight the compartment that was serviced. And hit

How do you engage high flow on a Cat skid steer? ›

In order to activate continuous flow then roll your rocker switch forward and hold for three to five

How often should you grease a Cat skid steer? ›

HOW OFTEN DO YOU GREASE A SKID STEER? Skid steer pins, bushing and other pivot points throughout the machine should be greased every 10 hours of operation, if not more depending on the working conditions.

How do you release pressure from a hydraulic system? ›

How To Depressurize Your Hydraulic System On Your Attachments For ...

How do you check skid steer hydraulic pressure? ›

How to check hydraulic pressure. - YouTube

How do you start a 262d Cat? ›

Starting 2017 Cat 279D - YouTube

How do I reset my Bobcat Service clock? ›

Bobcat Maintenance Light Reset M-Series Machines - YouTube

How do you know if a skid steer is high flow? ›

Low-flow skid steers, which are also known as standard-flow skid steers, range between 18 and 25 gallons per minute (gpm). High-flow skids move hydraulic fluid at rates between 30 and 45 gpm.

How do I know if my cat skid steer is high flow? ›

Continuous Flow on the Cat® D Series Skid Steer, Multi Terrain and ...

Can you add high flow to a skid steer? ›

A high-flow auxiliary hydraulics system is a second option that further increases a skid steer's versatility and productivity. As with standard-flow, it operates on the same pressures (approximately 3,000/3,500 psi) the main hydraulic circuits operate on. The flow rate, however, ranges from 30 to 38 gpm.

Can you over grease heavy equipment? ›

Seal damage is another negative side effect of overgreasing. Grease guns can produce up to 15,000 psi, and when you overgrease a bearing housing, the lip seals can rupture, allowing contaminants such as water and dirt to gain access into the bearing housing. Keep in mind that lip seals usually fail around 500 psi.

What maintenance does a skid steer need? ›

Every 250 to 500 hours of use, periodic maintenance should be performed. Periodic maintenance involves changing the engine oil, V-belt and all filters including the hydraulic, fuel and possibly air filters.

How often should you change oil in skid steer? ›

The owner's manual for your skid steer loader should indicate how often the manufacturer recommends an oil change. As a general rule, you'll want to change all the fluids in your skid steer once per every 250 operating hours. Meanwhile, your hydraulic fluid filter should be changed out every 500 operating hours.

How do I know if my hydraulic pressure valve is bad? ›

3 Signs Of Pressure Relief Valve Failure
  1. System Cannot Reach Pressure. If your system isn't reaching pressure, this could be a sign of pressure relief valve failure. ...
  2. System is Over Maximum Pressure. ...
  3. Pressure Relief Valve is Leaking or Has No Pressure.
26 Feb 2020

Where is the pressure relief valve located in a hydraulic system? ›

The system relief valve is normally located near the pump outlet on a typical hydraulic unit. The hydraulic unit could be at a distance from the operator, or cramped conditions could make the relief valve hard to get near.

How do you remove air from a hydraulic cylinder? ›

Partially close the cylinder when all the air has raised to the top of the cylinder. Open the bleed valve at the top for the air to escape. Leave it open until the hydraulic fluid from the valve flows freely. This indicates all the air has been bled out.

What causes hydraulics to lose pressure? ›

If your hydraulic pump is losing pressure, it's likely due to one of two things: a leak in the system, or a problem with the pump itself. To check for leaks, you'll need to take apart the system and look for any signs of damage. If the pump itself is causing the loss of pressure, you can try replacing it.

What are the common faults in hydraulic system? ›

The most common causes of poor hydraulic performance are particulate contamination, water contamination, clogged filters, high fluid temperature and incorrect hydraulic fluids.

Why is my hydraulic pump not building pressure? ›

If the pressure does not build up, the pump or relief valve is bad. If the system is operating at a slower speed, a volume problem exists. Pumps wear over time, which results in less oil being delivered.

How much does a CAT 262d weight? ›

8011.6 lbs

How do you use a 262d Cat? ›

Basic Safety Operations for Cat® Skid Steer Loader and Multi Terrain ...

Are skid steers hard to operate? ›

Skid steers are multipurpose workhorses suitable for both commercial job sites and DIY home projects. While they're fairly easy to operate, it does take some practice. If you're looking to learn how to operate a skid steer, follow these step-by-step instructions to get started.

How do you clear the code on a bobcat? ›

Bobcat Equipment Code Reset Change - YouTube

How do you reset the oil light on a bobcat? ›

Bobcat oil change hours reset - YouTube

What size skid steer do I need for snow removal? ›

You only need a tractor between 80 and 92 horsepower to do most jobs, though a 130 horsepower tractor can be used for larger jobs. Tractors and skid steers are roughly around the same size and can be used for similar snow removal projects.

How many GPM is high flow? ›

The term high-flow encompasses a wide category of skid loaders with varying flows and pressures. Flows range from 26 to 40 gpm and pressures range from 3,000 to 5,000 psi.

How many gpm do I need to run a brush cutter? ›

A flow of 11-20 GPM is required. Optional mesh grill is available on open front model. This attachment is the perfect choice for those lightweight land clearing jobs. If you have big land clearing jobs and need a more powerful brush cutter.

What is high flow used for on a skid steer? ›

"With higher hydraulic flow, the loader can provide more performance to power high-flow, high-performance attachments," says Kelly Moore, product manager, skid loaders, Gehl Co. "The increase in productivity is the greatest benefit - being able to perform more work more efficiently and more quickly.

How do you engage high flow on a Cat 299c? ›

Using Continuous Flow Feature in Cat D3 Series Machines - YouTube

How do skid steer hydraulics work? ›

Skid Steer Hydraulics Instructional - How do they work? - YouTube

How many hours should a skid steer last? ›

How Many Hours Will a Skid Steer Last? Some experts say the average lifespan of a skid steer is 5,000 hours. Keep in mind that how long your skid steer lasts depends on several different things, including: Whether you purchased the equipment in new or used condition.

How many hours is alot on a skid steer? ›

Consider Age, Hours, and Usage

If a 2-year old skid steer has 1,500 hours on it, it hasn't been worked full-time. necessary. As a rule of thumb, an 80 hp machine won't require an engine overhaul until its passed 8,000 hours; a 40 hp machine, on the other hand, will likely require an overhaul after about 4,000 hours.

What is the best skid steer for mulching? ›

This is a common question when it comes to choosing a skid steer mulcher and the answer is easy: Gyro-Trac makes the best skid steer mulcher based on specifications, warranty and customer reviews.

How do you release hydraulic pressure on a skid steer attachment? ›

Skid Steer Solutions Quick Tips: Hydraulic Back Pressure - YouTube

How do you reduce hydraulic pressure in a CAT loader? ›

Releasing Hydraulic Pressure: Cat® Backhoe Loader Operator Tip

How do you release the hydraulic pressure on a excavator? ›

How To Relieve Hydraulic Pressure - YouTube

What causes hydraulic back pressure? ›

Back pressure occurs when hydraulic flow in the return line is restricted and causes a buildup of pressure backward through the line. This is undesirable as it robs the entire system of potential flow as the pump now has to produce more power to overcome the back pressure.

How do you remove air from a hydraulic cylinder? ›

Partially close the cylinder when all the air has raised to the top of the cylinder. Open the bleed valve at the top for the air to escape. Leave it open until the hydraulic fluid from the valve flows freely. This indicates all the air has been bled out.

How do you adjust a hydraulic pressure reducing valve? ›

How to set a Hydraulic Pressure Relief Valve safely and easily - YouTube

How do you release hydraulic pressure on a Cat 247b? ›

How to Release Auxiliary Hydraulic Pressure on a Cat 256C Skid Steer ...

How do you connect hydraulic hoses to under pressure? ›

A Trick to Make Hooking Up Hydraulic Hoses Easier - YouTube

What is the hydraulic? ›

Hydraulics is a mechanical function that operates through the force of liquid pressure. In hydraulics-based systems, mechanical movement is produced by contained, pumped liquid, typically through hydraulic cylinders moving pistons.

How do you tow a Caterpillar skid steer? ›

Cat® Skid Steer and Compact Track Loader Safety & Operating Tips

How do you transport a skid steer? ›

Most skid steers ship on flatbed trailers, the most economical method of heavy-haul transport. If your machinery fits on a flatbed, ship it. Remember that you'll need a method of loading your skid steer onto the flatbed, which doesn't tilt down. One other possibility for shipping your skid steer is a hotshot trailer.

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