Honda Prelude BA5 Rear Brake Disk Full Service

Release hand brake and disassemble the brake cable.

Add some anti rust to make the job easier.
Pull out the lock pin.

Use flat screwdriver to remove the pin.

Use brake hose clamp to prevent brake oil drain.

Spray anti rust and use impact driver to loosen the screw.
Normal screwdriver also can work if the they are not too tight.

Loosen the caliper bolts.

Loosen the bracket bolts.

Use 2 bolts sized 12 to pull out the disk.

OEM Honda Brake Pad. 43022-SR3-003

Installation Procedure.

One of the piston need to be replaced.
This is branded new.  43215-SF1-003 .
I bring the sample and the shop gave me this.
If both pistons are broken, please consider to buy used caliper if available.

Brake Caliper service kit.
They matched Honda Accord SM4 also.

01473-SM4-010       01473-sf1-010

Inside the piston.

Use this tool if you want to disassemble the piston.
This step is unnecessary. 

Assembled!

Snap Ring Plier.

Useful tool. Also can use to rotate the piston.

It is better to have long nose snap ring plier.

Refer to last picture for component diagram.

After cleaning, put new grease to the hand brake cam hole.

Put new seal.

Put the hand brake cam.

Put new O-ring to the sleeve piston.
Add some grease to the rod to be attached to the piston.
There are 2 holes at the bottom of caliper.
Match them and push the piston.

Put snap ring to lock the piston.

Put new piston seal and piston boot.

Rotate ClockWise the piston until the piston is not going to any deeper.
DONT COUNTER CLOCK WISE
The piston must be positioned as in the picture to fit the brake pad.

The slider pin boot also included in the service kit.

All are ready.
The quickest step is to install everything back to its original position.

One person bleeding method.

Adjust the hand brake if necessary.

Reference.

This DIY is for those have experience at least front brake service job.

You might face difference techniques and method in actual implementation.

Honda with FICD - Fast Idle Control Device

This picture shows the custom idle Air Condition (AC) control.
Originally for injection, ECU will raise the idle when AC is switched on by adjusting the EACV.
This FICD originally came from Toyota car branded Denso.

I used small filter to filter and adapt the big hose to smaller hose.
The blue line act as intake
and the green circle is adjusting screw.
Due to the air restriction of the small filter, it only can raise idle up to 800 only.

EACV - Electronic Air Control Valve.




20140605

Hi ALL 
This is upgrade as the idle only go 800 or lower as small filter and small vacuum port.
The blue hose is silicone type and flexible enough to go anywhere. 
The other one goes to air breather hose using 'T' joint before.
Let the engine warm enough and set the air conditioner idle to 900 or any you like.

Honda Prelude Main Relay Repair

Believe it or not, this main relay cause
 the ECU throw Code 15 "Ignition Output Signal" and can't start.
Luckily i heard weird sound while turn the key into "On" position.
I hold the main relay box and feel the relay was crazy.
Opened it and discovered some water in the box.
Wiped the water, the engine started easily and no more ECU code.

I decided to rebuild it to last  longer.

Desoldered the pin.

Dirty with soil.

The circled things need to be cleaned with 1000 grade sand paper.

Solder them back.

Good Luck!

For reference

For reference

For reference

How to Detect Rotor Disc Alignment or Warping

1st Method:
Remove brake caliper.
Hold the brake pad and rotate the rotor disk.
Observe the brake pad and bracket.
If brake pad moving on the bracket while rotating,
the rotor disk might be warped or not seated evenly on wheel hub.

2nd Method:
More works as the bracket need to be removed.
Find any size bolt and install it as above.
Adjust the bolt as close to rotor disk.
Observe the gap between bolt and rotor disk while rotating.
If the gap not evenly on all surface, check the wheel hub.
If the wheel hub is good, try to skim it and retest.

This is an example the wheel hub had hammered on some spot.

Grind it and retest.
Don't forget to check the rotor disk itself.
Maybe some pieces of metal fell in.

Good Luck!