Removing The Hydraulic Unit Assembly; Checking The Hydraulic Unit Assembly; Checking The Brake Pipes - Yamaha 2009 Diversion XJ6S Service Manual

EAS4B56004
REMOVING THE HYDRAULIC UNIT
ASSEMBLY
ECA4B56013
NOTICE
Unless necessary, avoid removing and in-
stalling the brake pipes of the hydraulic unit
assembly.
EWA13930
WARNING
Refill with the same type of brake fluid that is
already in the system. Mixing fluids may re-
sult in a harmful chemical reaction, leading
to poor braking performance.
ECA4B56014
NOTICE
Handle the ABS components with care,
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since they have been accurately adjusted.
Keep them away from dirt and do not sub-
ject them to shocks.
Do not turn the main switch to "ON" when
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removing the hydraulic unit assembly.

Do not clean with compressed air.
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Do not reuse the brake fluid.
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Brake fluid may damage painted surfaces
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and plastic parts. Therefore, always clean
up any spilt brake fluid immediately.
Do not allow any brake fluid to contact the
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couplers. Brake fluid may damage the cou-
plers and cause bad contacts.
If the union bolts for the hydraulic unit as-
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sembly have been removed, be sure to
tighten them to the specified torque and
bleed the brake system.
1. Remove:
Brake pipes
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Brake hoses
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TIP
Do not operate the brake lever and brake pedal
while removing the brake hoses and brake
pipes.
ECA4B56015
NOTICE
When removing the brake hoses and brake
pipes, cover the area around the hydraulic
unit assembly to catch any spilt brake fluid.
Do not allow the brake fluid to contact other
parts.
2. Disconnect:
ABS ECU coupler "1"
G
TIP
Pull up the coupler ejection slider to disconnect
ABS (ANTI-LOCK BRAKE SYSTEM)
the ABS ECU coupler.
1
3. Remove:
Hydraulic unit assembly "1"
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TIP
To avoid brake fluid leakage and to prevent for-
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eign materials from entering the hydraulic unit
assembly, insert a rubber plug "a" or a bolt
(M10 × 1.0) into each flare nut hole.
When using a bolt, do not tighten the bolt until
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the bolt head touches the hydraulic unit. Other-
wise, the brake pipe seating surface could be
deformed.
a
1
EAS4B56005
CHECKING THE HYDRAULIC UNIT
ASSEMBLY
1. Check:
Hydraulic unit assembly
G
Cracks/damage → Replace the hydraulic unit
assembly and the brake pipes that are con-
nected to the assembly as a set.
EAS4B56006

CHECKING THE BRAKE PIPES

The following procedure applies to all of the
brake pipes.
1. Check:
Brake pipe end (flare nut)
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Damage → Replace the hydraulic unit, brake
pipes, and related parts as a set.
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