Question about 1999 Chevrolet Blazer
Go under your vehicle after you have jacked it up and supported it on jack stands.
Locate the hydraulic slave cylinder, if it is an external slave cylinder then you can bleed it without too much difficulty.
If it is an external slave cylinder, locate the bleed nipple on the side of the slave cylinder,,attach a piece of rubber hose to the bleed nipple.
Then take a small clean jar or bottle and fill it to one quarter full of brake fluid. Dot3 usually.
Then put the free end of the hose into the bottle so that it is submerged under the fluid level.(it is important that you keep it submerged) then take an appropriate size wrench and loosen off the bleed nipple a quarter turn, or enough to get some flow.
Then make sure that the Fluid reservoir is kept topped up. while you slowly pump your clutch pedal,,then after doing this, leave the system alone for an hour or so(your choice) and let any remaining air bubbles escape from the line.
After you have done all this,,tighten up the bleed nipple, remove the rubber hose,,and save the contents of the jar for later use.(remember, brake fluid must be left to stand 24 hours after being removed from a closed system before re-use) once this is all done,,you should be good to go.
Posted on Jan 29, 2009
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Posted on Jan 02, 2017
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1) The Hydraulic system should be bled to remove all the air whenever air enters the system. This occurs if the fluid level has been allowed to fall so low that air has been drawn into the clutch master cylinder. Under normal circumstances, air should not enter the system when the quick disconnect hydraulic line fittings have been disconnected. The procedure is very similar to bleeding a brake system, but depends mainly on gravity, rather than the pumping action of the pedal, for the bleeding effect.
2) Fill the master cylinder to the top with new brake fluid conforming to DOT 3 or DOT 4 specifications. Caution: Do not re-use any of the fluid coming from the system during the bleeding operation and don't use fluid from which has been inside an open container for an extended period of time.
3) Raise the vehicle and place it securely on jack stands or drive it securely up on ramps (whichever method you chose) to gain access to the bleeder valve, which is located on the top left side of the bellhousing (See Illustration 1-1 below). Try to keep the truck as level as possible. Caution: Don't forget to chock the rear wheels and set parking brake for extra safety...
4) Remove the dust cap which fits over the bleeder valve and push a length of clear plastic hose over the valve. Place the other end of the hose into a clear container.
5) Open the bleeder valve. Fluid will run from the clutch master cylinder, down the hydraulic line, into the release cylinder (the Slave Cylinder) and out through the clear plastic tube. Let the fluid run out until it is free of bubbles.
Note: Don't let the fluid level drop too low in the clutch master cylinder, or air will be drawn into the hydraulic line and the whole process will have to be started over.
6) Close the bleeder valve.
7) Open the bleeder valve and have an assistant slowly depress the clutch pedal allowing fluid to flow through the clear plastic hose. When the clutch pedal is almost to the floor, close the bleeder valve and have the assistant release the pedal.
8) Slowly press the pedal five times, waiting two (2) seconds each time the pedal is released. When releasing the pedal on this step, release it fast. This tends to help **** fluid down the stream and aid in faster bubble reduction.
9) Fill the fluid reservoir to the top.
10) The clutch should now be completely bled. If it isn't, (indicated by failure to disengage completely, and a soft or no pedal), repeat steps 5 through 9.
11) Continue this process until all air is evacuated from the system, indicated by a solid stream of fluid being ejected from the bleeder valve each time with no air bubbles in the hose or container.
12) Install the dust cap and lower the vehicle. Check carefully for proper operation before placing vehicle in normal service. Check the fluid level.
Note: If you can NOT get fluid out of the bleeder screw, then the internal check valve in your clutch master cylinder may be stuck, or you haven't bleed the system for at least 30 minutes. You will either have to use a different bleed technique, or replace the clutch master cylinder. Bleeding a Ranger clutch system takes time and patience. One small mistake / loss of patience / or shortcut, and you'll have to start all over.
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