How do I top up hydraulic clutch fluid on Toyota Hiace diesel?
I had to change the piece of damaged hydraulic steel pipe feeding the clutch finger , and obviously lost some fluid in a process , now the system is sealed and tight , but there is air in it , and I can't get rid of it by a clasic "pump and tighten the breather ,release -loosen the breather" action. Is there a fluid missing in a system ? If it is fed from the brake system , that is nice and full. Or am I making a mistake in a de- airing procedure?
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Re: how do I top up hydraulic clutch fluid on Toyota...
Try leaving the breather open, then pump the pedal until you are sure pure fluid only is coming thru i.e no air bubbles, then tighten the breather. Then check operation. The clutch should have its own fluid container.
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Under the hood, on the firewall, there is the clutch master cylinder with a reservoir on it. This is where the fluid goes. Uses brake fluid, just like the brake master cylinder, also on the firewall. The clutch master only has one line coming from it-the line that goes to the clutch slave cylinder.
Yes they are the same . Check that the master cylinder is operational as a slipping clutch can be a blocked compensating port not allowing the fluid to drain back to the reservoir and holding the pressure on the clutch release.
The clutch hydraulic system is very simple, just 3 pieces. There is the clutch master cylinder with attached fluid reservoir-mounted on the firewall, there is a steel line from the master going down to the transaxle bell housing, and there is the clutch slave cylinder on the bell housing that the steel line connects to.
If yours is leaking under the car, it is probably the slave cylinder, either that or the steel line. Either one should be easy to replace.
Does the pedal feel normal? If it goes to the floor with no resistance you still have air in the hydraulic system. A fool proof, one person method is to attach a piece of rubber tubing (like a foot or so of vacuum hose) over the bleeder screw, open it about one full turn, put the other end of the hose in a container of brake fluid making sure the end is submerged, fill the master cylinder and pump the pedal slowly until the m/c is 3/4's empty. Refill it and do this 2 more times. This works on any system every time. If you slave cylinder still doesn't work you may have defective parts.
what does hard mean?
right (LHD cars USA) hand cant move lever to detents of the H pattern
or clutch is stiff (left foot)
does reverse grind, it loves to, does it?
can you drive and shift ok with drive wheels off ground?
yes,that means clutch drag, is bad. its dragging.
or as some say not releasing 100%
im no High ace expert but then again i can look under hood
so does it have a hydraulic actuated clutch?
if yes, is the fluid low, does it lose fluid
bingo bad MC and slave, get both changed.
if time on hands is free. which end is bad, can be discovered sometimes. if either leak they are bad. MC can leak on either side of the fire wall. look for it.
slaves fail first, and the leak is near impossible to tell (cept level loss)
it lands on road and you miss that fact.
tell more get more..
there is a metal pipe running from the left side of the clutch master to the slave on the box. a rubber hose runs from the left of the brake master to the top of the clutch master. the front brakes use a metal pipe from the rear threaded hole and the rears of the front hole
Are you sure it was brake fluid leaking? If you were leaking transmission fluid then that could cause some of the mechanical workings to stall, in turn causing the clutch to freeze-up. The other (more likely) problem is that you were leaking hydraulic fluid for the hydraulic clutch.
It sounds like you will probably have a hydraulic clutch, and fluid was leaking. If you accidentally topped-up the hydraulic fluid for the clutch with brake fluid, that would be an interesting scenario... not sure how the mis-match would work out. If the hydraulic clutch fluid is simply low, you can flush it out, put new fluid in there and get it to a dealer to repair the clutch