Honda Civic Service Manual: Brake Master Cylinder Removal, Installation, and Inspection (Natural Gas models)
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1.
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Raise the vehicle on a lift, and make sure it is securely supported.
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1.
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Remove the steering joint cover (A).
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1.
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For some models: Remove the lower clip (A) from the stud bolt
(B) with a 6 mm hex socket wrench.
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2.
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For some models: Remove the upper clip (C) from the stud bolt
(D) with a flat-tip screwdriver, then remove the footrest (E).
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| 4. |
Front Door Sill Trim - 4-Door |
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2.
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Remove the opener lock cylinder (B).
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4.
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Remove the front door sill trim (A).
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1.
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Pull out the front door opening seal (A) as needed.
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2.
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Remove the kick panel (B).
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| 6. |
Air Cleaner Housing (Natural Gas Model) |
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1.
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Disconnect the intake air duct.
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2.
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Remove the air cleaner (A).
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3.
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Disconnect the connector (B).
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4.
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Remove the harness clamp (C).
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1.
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Remove the reservoir cap and the brake fluid from the master
cylinder reservoir with a syringe.
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Do not spill brake fluid on the vehicle; it may damage the paint. If
brake fluid does contact the paint, wash it off immediately with water.
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Press the brake pedal several times to deplete the vacuum
in the brake booster.
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Be careful when handling the master cylinder. Do not
hold it at the piston, or the piston may separate from the
body. If the piston separates from the body, then the master
cylinder must be replaced. Do not reinsert the piston back
into the master cylinder body.
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Be careful not to damage or bend the brake lines during
removal and installation.
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After removal, plug the ends of the hoses and the joints
to prevent spilling brake fluid.
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Make sure not to get any silicone grease on the terminal
part of the connectors and switches, especially if you have
silicone grease on your hands or gloves.
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1.
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Disconnect the connector (A).
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2.
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Remove the reservoir tank (B).
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3.
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Disconnect the brake lines (A) from the master cylinder (B).
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4.
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Remove the master cylinder from the brake booster (C).
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5.
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Remove the O-ring (D) from the master cylinder.
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| 1. |
Master Cylinder - Inspection (Natural Gas Model) |
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 removesediment.and(orholesto:and
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1.
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Inspect and note these items:
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Before reassembling, check that all parts are
free of dirt and other foreign particles.
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Do not try to disassemble the master cylinder
assembly. Replace the master cylinder assembly with
a new part if necessary.
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Do not allow dirt or foreign matter to contaminate
the brake fluid.
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2.
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If the reservoir tank hose was disconnected, install the reservoir
tank (A) and the reservoir tank hose (B) to the subreservoir (C).
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NOTE: Align the ‘‘ ’’
marks (D) on the reservoir tank and subreservoir with the paint
marks (E) on the hose.
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1.
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Install the new O-ring (A) to the master cylinder.
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NOTE: Coat the O-ring with the Shin-Etsu silicone grease (P/N
08798-9013).
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2.
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Install the master cylinder (B) to the brake booster (C).
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3.
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Connect the brake lines (D) to the master cylinder.
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4.
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Install the reservoir tank (A).
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5.
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Connect the connector (B).
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| 2. |
Brake Pedal Height - Inspection (Natural Gas Model) |
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1.
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Pull back the carpet, and find the cutout (A) in the insulation.
Measure the pedal height (B) from the left side middle of the pedal
pad (C) to the floor (D) without the insulation.
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Standard pedal height: 147-157 mm (5.79-6.18 in)
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2.
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If the pedal height is not as specified, adjust the pedal height.
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| 3. |
Brake Pedal Free Play - Check |
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1.
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Turn the ignition switch to LOCK (0).
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2.
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Inspect the free play (A) at the brake pedal pad (B) by pushing
the brake pedal by hand. If the brake pedal free play is out of
specification, adjust the brake pedal position switch (C). If the
brake pedal free play is insufficient, it may result in brake drag.
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Free play: 1-5 mm (0.04-0.20 in)
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| 4. |
Brake System - Bleeding (Natural Gas Model) |
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Do not spill brake fluid on the vehicle; it may damage the paint. If
brake fluid does contact the paint, wash it off immediately with water.
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Do not reuse the drained fluid. Use only new Honda DOT
3 Brake Fluid from an unopened container. Using a non-Honda
brake fluid can cause corrosion and shorten the life of
the system.
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Make sure no dirt or other foreign matter gets in the
brake fluid.
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The reservoir connected to the master cylinder must be
at the MAX (upper) level mark at the start of the bleeding
procedure and checked after bleeding each wheel. Add fluid
as required.
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There are three different methods used for bleeding brake
systems. The method shown here is the preferred manual method
for removing the air from the system. For pressure or vacuum
bleeding, refer to tool manufacturer's instructions included
with the tool.
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1.
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Make sure the brake fluid level in the reservoir tank (A) is
at the MAX (upper) level line (B).
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2.
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Start the bleeding at the driver's side of the front brake system.
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NOTE: Bleed the calipers in the sequence shown.
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Front
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Rear
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3.
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Attach a length of clear drain tube (A) to the bleed screw (B).
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4.
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Submerge the other end of the drain tube into a clear plastic
catch bottle of brake fluid (C).
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5.
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Have an assistant slowly pump the brake pedal several times then
apply steady continuous pressure.
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6.
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Loosen the bleed screw slowly to bleed the fluid into the plastic
catch bottle. The brake pedal will travel toward the floor as the
fluid is bled from the system.
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7.
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When the brake pedal reaches the floor, have the assistant hold
the pedal in that position, then tighten the bleed screw. The brake
pedal can now be released.
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8.
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Check and refill the master cylinder reservoir tank to the MAX
(upper) level line. Be sure to reinstall the master cylinder reservoir
cap.
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9.
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Repeat steps 5 thru 8 until the brake fluid in the clear drain
tube appears fresh and there are no air bubbles in the fluid.
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10.
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Repeat this procedure for each brake in the bleeding sequence.
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1.
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Spin the wheels to check for brake drag.
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| 6. |
Air Cleaner Housing (Natural Gas Model) |
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1.
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Install the air cleaner (A).
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2.
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Install the harness clamp (B).
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3.
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Connect the connector (C).
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4.
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Connect the intake air duct.
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1.
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Install the kick panel (A).
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2.
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Install the front door opening seal (B).
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| 8. |
Front Door Sill Trim - 4-Door |
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1.
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Install the front door sill trim (A).
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2.
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Install the screw (A).
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3.
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Install the opener lock cylinder (A).
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1.
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For some models: Install the upper clip (A) to the stud bolt
(B).
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2.
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For some models: Install the lower clip (C) to the stud bolt
(D), then install the footrest (E).
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1.
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Install the steering joint cover (A) in the sequence shown.
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Inspection
1.
Brake Hose and Line - Inspection (Natural Gas Model)
1.
Inspect the brake hoses for damage, deterioration, leaks, interference,
and twist ...
Check
1.
Brake Pedal Free Play - Check
1.
Turn the ignition switch to LOCK (0).
...
See also:
Honda Civic Owners Manual. How to Set Up the Jack
Place the jack under the jacking point
closest to the tire to be changed.
Turn the end bracket clockwise as shown in
the image until the top of the jack contacts
the jacking point.
► Make sure that the jacking point tab is
resting in the jack notch.
Raise t ...
Brake Hose and Line Inspection (Natural Gas models)
Brake Pedal Free Play Check