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How to bleed brakes on a th83 caterpillar - Caterpillar American Construction Equipment 1:87 Scale

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How to bleed brakes


Bleeding brakes is pretty much the same across all vehicles. However, are you sure that there's air in the system and not a faulty brake master cylinder? The brake master cylinder has rubberised 'O' seals inside which, if worn, can cause a spongy pedal that has to be pumped before the brakes feel hard.



To bleed the brakes you need a length of plastic tube to fit onto the brake bleed nipple on the brake calliper. You can buy a brake bleeding kit which incorporates a non-return valve. The valve allows brake fluid to be pumped through it but prevents air from being drawn back up the tube into the brake system.



You can use ordinary plastic tube, but one end should be placed in a container of brake fluid to prevent air being drawn back in.



1. Locate the bleed nipple. Usually you start at the wheel nearest to the brake master cylinder (and then bleed each wheel in turn working your way to the furthest wheel from the car -if necessary).



2. Before you begin:Put a ring spanner onto the bleed nipple. Put a finger over the end of the bleed nipple to prevent air from entering via the nipple and 'rock' the spanner to make sure that the nipple will actually loosen. It is quite common for brake bleed nipples to seize then shear when turned with a spanner(wrench..). Don't use an open-ended spanner (wrench) otherwise the chances are you will 'round off' the bleed nipple.



3. Put the ring spanner on the bleed nipple and fit the bleed tube.

Get somebody to turn on the engine and slowly - slowly - depress the brake pedal. Undo the nipple slightly and brake fluid (maybe with air bubbles in it) should be visible in the tube.



get your helper to pump the brake pedal 3-4 times and keep the pedal depressed. Tighten the brake nipple.



4. Then repeat for each calliper if necessary.



5. Many cars have a split circuit brake system. That is, the front offside wheel is on the same system as the rear nearside wheel. The front nearside wheel is on the same line as the rear offside.



Here, you would bleed the front brake first and then the diagonally opposite rear wheel.








bleed-brakes-yytlcu2b3evmxr44xdn3gosb-1-1.jpeg

Plastic tube with non return valve for bleeding brake








bleed-brakes-yytlcu2b3evmxr44xdn3gosb-1-3.jpeg

Generic image - bleed nipple on calliper.








A bleed nipple. The open end is where the tube fits. Usually, you only need undo a bleed nipple approximately one turn. Use a ring spanner, not an open ended spanner.









bleed-brakes-yytlcu2b3evmxr44xdn3gosb-1-10.jpeg



Below: Bleed nipple can be seen on bottom right of calliper (generic image)


bleed-brakes-yytlcu2b3evmxr44xdn3gosb-1-15.jpeg



Below: Ring spanner on bleed nipple with tube attached.


bleed-brakes-yytlcu2b3evmxr44xdn3gosb-1-21.jpeg

Jan 21, 2016 | Cars & Trucks

1 Answer

I have a ford escort xr3i 1988 i have replaced the brake master cylinder, bleed the brakes but still have no brakes what could be wrong?


Your car has a diagonally split brake system. Each side of this system must be bled as an individual system, and there is a correct bleeding sequence to be followed. First bleed the right rear brake, second, bleed the left front brake, then follow with the left rear brake and lastly, bleed the right front brake.Here's a link on a repair guide for bleeding your brakes. Repair Guides Brake Operating System Bleeding The Brake System AutoZone com

May 24, 2015 | Ford Escort Cars & Trucks

1 Answer

How do I bleed brakes on caterpillar serial#5hk90948


If you're not an expert and don't have the right tools, you cannot do this yourself, as it is a delicate procedure that requires some knowledge in this field. However, if you have little knowledge and experience in this matter but have the appropriate tool, then I suggest that you first get some tutorial and training on YouTube and when you're ready and confident you can try it yourself. On YouTube there are many videos in this aspect, all offering you a simple, yet intuitive tutorials on how the job should be done. Go there or click the link below to take you to a list of tutorial. All you have to do is watch and learn. Cheers
https://www.youtube.com/watch?v=IoaPUw5DliA

Oct 01, 2014 | Avid Juicy Ultimate Hydraulic Disc Brake ,...

1 Answer

How to bleed fuel line on caterpillar diesel engine


It is only necessary to post your question once. More than once is just annoying.

Aug 12, 2014 | Cars & Trucks

1 Answer

Brake system will not bleed


What is it on? Make model and year

Feb 07, 2013 | Caterpillar Toys

1 Answer

What are the proper steps to bleeding your brakes on a 1990 vw golf deisel


For left hand drive vehicles: (If the car does not have ABS system you do not need any diagnostic equipment!)

IMPORTANT NOTE: You need using diagnostic equipment connected to the data link connector of the car in order to bleed the ABS block. Follow instructions by scantool equipment for bleeding the ABS block.


1. This bleeding procedure requires two people. Remove the brake system reservoir cap, and fill up with new brake fluid until "MAX" level is reached.
2. Lift the car, or use a channel for access under vehicle.
3. Put the gearbox in "N" - Neutral position, or in "P" - Parking position for automatic transmission.
4. Start the engine and push the brake pedal firmly for 4 - 5 times to the floor, and maintain the brake pedal pushed to the floor.
5. Begin with the rear right wheel. Another person remove the dust cap and loose the brake caliper bleeding screw until the brake pedal goes to the floor. At this moment maintain the brake pedal pushed to the floor, engine idling, and tight the brake caliper bleeding screw. Use a plastic hose: one end connected to the brake caliper bleeding screw, and another end inside a recovery bottle for used brake fluid.
6. Repeat steps no.#4 and no.#5 until no air flows through the brake caliper bleeding screw. Tight the brake caliper bleeding screw, and put the dust cap in their place.

IMPORTANT NOTE: All the time check the brake fluid level in the brake system reservoir, and fill up if necessary!

7. Push the brake pedal firmly for 4 - 5 times to the floor, and maintain the brake pedal pushed to the floor, engine idling.
8. Continue with the rear left wheel. Another person remove the dust cap and loose the brake caliper bleeding screw until the brake pedal goes to the floor. At this moment maintain the brake pedal pushed to the floor, engine idling, and tight the brake caliper bleeding screw. Use a plastic hose: one end connected to the brake caliper bleeding screw, and another end inside a recovery bottle for used brake fluid.
9. Repeat steps no.#7 and no.#8 until no air flows through the brake caliper bleeding screw. Tight the brake caliper bleeding screw, and put the dust cap in their place.

IMPORTANT NOTE: All the time check the brake fluid level in the brake system reservoir, and fill up if necessary!

10. Push the brake pedal firmly for 4 - 5 times to the floor, and maintain the brake pedal pushed to the floor, engine idling.
11. Continue with the front right wheel. Another person remove the dust cap and loose the brake caliper bleeding screw until the brake pedal goes to the floor. At this moment maintain the brake pedal pushed to the floor, engine idling, and tight the brake caliper bleeding screw. Use a plastic hose: one end connected to the brake caliper bleeding screw, and another end inside a recovery bottle for used brake fluid.
12. Repeat steps no.#10 and no.#11 until no air flows through the brake caliper bleeding screw. Tight the brake caliper bleeding screw, and put the dust cap in their place.

IMPORTANT NOTE: All the time check the brake fluid level in the brake system reservoir, and fill up if necessary!

13. Push the brake pedal firmly for 4 - 5 times to the floor, and maintain the brake pedal pushed to the floor, engine idling.
14. Continue with the front left wheel. Another person remove the dust cap and loose the brake caliper bleeding screw until the brake pedal goes to the floor. At this moment maintain the brake pedal pushed to the floor, engine idling, and tight the brake caliper bleeding screw. Use a plastic hose: one end connected to the brake caliper bleeding screw, and another end inside a recovery bottle for used brake fluid.
15. Repeat steps no.#13 and no.#14 until no air flows through the brake caliper bleeding screw. Tight the brake caliper bleeding screw, and put the dust cap in their place.
16. Now the brakes are bleeded. Check the brake fluid level in the reservoir. Fill up with new brake fluid until "MAX" level is reached. Put back the brake reservoir cap.
17. Test the car brake system. The brake pedal movement no more than 1/3 of total stroke until the floor, when brake pedal is applied. Maximum admissible is 1/2 of total stroke.

Dec 06, 2010 | Volkswagen Golf Cars & Trucks

2 Answers

I have a cat GP30 forklift with brake problems. i have changed the brake shoes, wheel cilinders, adjusted, and bleed brakes. the brake peddle still goes to floor. is it the master cylinder.


i have 8000# fork lift when we apply brakes you have to go in oppisite directions to move again(the brakes stick) an also it has very sensitive brakes kind of scary

Aug 30, 2010 | Caterpillar American Construction...

1 Answer

No brake pressure Cat t50d forklift.


thottle linkage on t50d catipiller forklift anyone know how it goes on

Mar 25, 2009 | Caterpillar American Construction...

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