Removing The Hydraulic Unit Assembly; Checking The Hydraulic Unit Assembly; Checking The Brake Hoses - Yamaha VMAX 2009 Service Manual

EAS2S31023
REMOVING THE HYDRAULIC UNIT
ASSEMBLY
ECA2S31024
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.
ECA2S31025
NOTICE
• Handle the ABS components with care
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

removing the hydraulic unit assembly.

• Do not clean with compressed air.
• Do not reuse the brake fluid.
• Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean
up any spilt brake fluid immediately.
• Do not allow any brake fluid to contact the
couplers. Brake fluid may damage the cou-
plers and cause bad contacts.
• If the union bolts for the hydraulic unit as-
sembly have been removed, be sure to
tighten them to the specified torque and
bleed the brake system.
1. Disconnect:
• ABS ECU coupler "1"
TIP
Pull the coupler ejection slider up to disconnect
the ABS ECU coupler.
2. Remove:
• Brake hoses
ABS (ANTI-LOCK BRAKE SYSTEM)
1
4-57
TIP
Do not operate the brake lever and brake pedal
while removing the brake hoses.
ECA2S31031
NOTICE
When removing the brake hoses, cover the
area around the hydraulic unit assembly to
catch any spilt brake fluid. Do not allow the
brake fluid to contact other parts.
3. Remove:
• Hydraulic unit assembly "1"
TIP
• To avoid brake fluid leakage and to prevent for-
eign materials from entering the hydraulic unit
assembly, insert a rubber plug "a" or a bolt
(M10 × 1.00) into each flare nut hole.
• When using a bolt, do not tighten the bolt until
the bolt head touches the hydraulic unit. Other-
wise, the brake pipe seating surface could be
deformed.
a
1
EAS2S31024
CHECKING THE HYDRAULIC UNIT
ASSEMBLY
1. Check:
• Hydraulic unit assembly
Cracks/damage → Replace the hydraulic unit
assembly and the brake hoses that are con-
nected to the assembly as a set.
EAS2S31025

CHECKING THE BRAKE HOSES

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