Vanguard OHV V-Twin User Manual page 146

CRANKCASE BREATHER SERVICE
Models 290000 – 351000
Remove the air cleaner assembly.
Remove breather assembly (1). Discard gasket (2),
Fig. 5.
Fig. 5
Checking Reed Valve Breather
The reed valve is spring loaded and must make a
complete seal around the vent hole (1) in breather
body, Fig. 6. Check to see that reed valve is not
deformed.
CAUTION: Do not use force on the reed valve.
Fig. 6
Checking Fiber Disc Breather
If the fiber disc valve (3) is stuck or binding, the
breather assembly (1) must be replaced. A 0.045"
(1.14 mm) wire gauge (2) should not enter the space
between the fiber disc valve and body, Fig. 7.
CAUTION: Do not use force on the fiber disc.
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Fig. 7
Install Reed Valve Breather
1. Place breather (2) on gasket (3), Fig. 8.
2. Assemble large O-ring (1) onto mounting screw.
3. Install screw. Torque to 30 in. lbs. (3 Nm).
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Fig. 8
Install Fiber Disc Breather
1. Place breather on gasket.
2. Place large O-ring (1) on breather, Fig. 9.
3. Assemble washer (3) and small O-ring (2) to
screw.
4. Install screw. Torque to 30 in. lbs. (3 Nm).
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Fig. 9
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