quik truck question

[nickmelll]

i have a 94 toyota pickup 4*4 and i need to put brake lines on it. my ? is on the back brakes 2 brake lines run b ack and in tlo this round little box thing and then one lin e comes out does any one know wat th box thing is cuz i need to get a new one ..,... ill try to get a pic later thanx

[54warrior]

Hmmm, typically, a single solid line runs from the master cylinder back along the frame where it joins a flexible rubber line that then mates with a junction block on or near the rear axle assembly. It then splits off the junction into two lines going to the L/R wheels. Both sides are coupled to flexible rubber lines at some point prior to entering either a caliper (disc brakes) or wheel cylinder (drum brakes).

[Lowcountrydave]

Its called a (LSPV) Load Sense proportioning valve. It also has a rod that attaches to your rear axle. The purpose of the valve is to add more or less rear braking, depending on how much load is in the bed. The valve adjust as the rod position changes.


Dave

[54warrior]

Interesting!!! Never heard of such a device.

[Lowcountrydave]

I thought so to, but I've owned my 91 toyota 4x4 for the last 15 years. So I have learned alot about these little trucks. You can't kill them no matter how hard you abuse them either.


Dave

[nickmelll]

,

[nickmelll]

ok thanks can i just eliminate it and run a straight line

[Lowcountrydave]

Its not a good idea. Not to mention its not going to stop your truck properly, especially if you have a heavy load in the back. Best to replace it, how do you know it needs replacing?


Dave

[nickmelll]

the brake lines are rusted in and i can get them out the rod has been broke for years and wee didnt no wat it was for ill look on ebay for one thanxs again

[Lowcountrydave]

No prob!

Does this truck have any kind of suspension lift on it? Something to remember if it does. Example: 4" lift (suspension) You would need to make a bracket that would raise the rod end that attaches at the axle 4"s higher (to keep the stock setting)

Basically so the trucks (LPSV) applys the correct amount of braking when the bed is empty vs loaded.


Dave

[chris46250r]

On the three Toyotas that I have had and lifted I just eliminated the valve and didn't have any problems with the brakes.

[Lowcountrydave]

It won't seem to make a difference but it does. In how hard the front brakes have to work to stop the truck without the help of the rear brakes. Frequency of how often the brakes will have to be replaced.




Dave

[nickmelll]

yea it does have a lift does anyone happen to have a rearend or a bed for one that they want to selll?