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User Guide & Installation Manual
32 FORD PEDAL ASSEMBLY
HEXPBA02
Most Common Problems
1.) The bleeder screws on the calipers are not facing up.
2.) The master cylinder was not bench bled or was not bled completely.
3.) Defective rebuilt master cylinder with pitted cylinder bore or defective seals.
4.) Master cylinder bore size too small for system volume requirements.
5.) Master cylinder mounted lower than the calipers or wheel cylinders.
6.) Lines or components near a heat source.
7.) Low drag metric calipers without the use of a quick take up master cylinder.
8.) No residual valve to rear drums.
9.) Drum brake wheel cylinders too large.
10.) Use of Silicone brake fluid.
11.) Rear caliper parking / pistons not set up properly with a rear disc system.
12.) Rear calipers not being bled properly. Most four wheel disc brake problems come from the rear.
13.) Improper pedal adjustment with too much play.
14.) Old or inferior quality brake hoses.
How To Properly Diagnose A Brake Problem
If you have very poor brakes, a spongy pedal or no pedal at all you will have to do some diagnostics to determine where the problem is
in your system. Is it the master cylinder, the front brakes or the rear brakes?
These tests assume that your system is properly installed and bled. Perform these simple tests to find where the problem is. Once you
know where the problem is it will much easier to fix.
1.) Disconnect the brake lines from the master cylinder while leaving it on the vehicle.
2.) Obtain solid tapered plugs for the master cylinder outlets with the correct thread pitch.
3.) Plug the master cylinder outlets. Step on the pedal and hold pressure for about 30 seconds. If the
pedal remains firm then the master cylinder is good. If the pedal sinks to the floor then the master
cylinder is bad.
4.) If the master cylinder is fine, connect the line to the front brakes. If the pedal remains firm then
the problem is not coming from the front brakes. If the pedal sinks to the floor or is excessively
spongy then the problem is with the front brakes.
5.) Connect the rear line and if the pedal goes bad then the problem is in the rear. You may also
check whether your lack of a pedal comes from the front or rear this way. If you are sure the master cylinder is good, clamp off the front
rubber hoses and try the pedal. If you get a good pedal then you know the problem is from the front calipers. Be very careful not to
damage the hoses and try to protect them from damage by placing the hose between something smooth. There is a special tool sold in
auto parts stores for this purpose. Try it on the rear if the
front is fine.
IF YOU HAVE A GOOD PEDAL BUT YOUR CAR WILL NOT STOP, YOU MUST OBTAIN PRESSURE READINGS AT THE MASTER
CYLINDER AND THE FRONT AND REAR WHEELS.
Disc brakes minimum pressure 800 PSI
Drum brakes minimum pressure 400 PSI
©2016 The Hoffman Group L.L.C. All rights reserved.
The above instructions are for reference only. THG LLC is not responsible for any inaccuracies in the above instructions. THG LLC is also not responsible for any property damage or personal injuries resulting from the
above instructions. Installation by qualified automotive professionals is highly recommended.
WWW.HELIXSUSPENSION.COM
HEXPBA02
6/14/2016
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