Vanguard OHV V-Twin User Manual page 123

• CAUTION: Do not resurface cylinder head
mounting surfaces.
2. Check valve guide bushings for wear using Plug
Gauge (2) #19382, Fig. 10. Replace valve guide
if gauge enters guide 1/4" (6 mm) or more.
Fig. 10
Replace Valve Guide
1. Press out old valve guide (2) using Bushing
Driver (1), #19367, Fig. 11.
Fig. 11
2. Press in new valve guide (4) using Bushing
Driver (3) #19416, Fig. 12. Press in until tool
bottoms on valve guide bushing boss.
• CAUTION: Do not use hammer to install
bushing.
„
Fig. 12
122
3. Use Reamer Pilot Guide #19345 (5) and Finish
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Reface Valves And Seats
Valve seats can be reconditioned with Valve Seat
Cutter Kit #19237 and #19343.
If valve seat is wider than 3/64" (1.2 mm), Fig. 14,
use a narrowing cutter to ensure that contact area of
valve seat is centered on face of valve, Fig. 16.
Use a 605 cutter, Fig. 14, top inset, to narrow seat
from bottom. Use a 155 cutter, Fig. 14, bottom
inset, to narrow seat from top.
NOTE: If valve seat is loose or cracked, replace
ƒ
(0.8 MM – 1.2 MM)
Reamer #19444 (6) to ream new valve guide,
Fig. 13.
a. Use Stanisol or kerosene to lubricate
reamer.
b. Ream through entire guide.
c. Keep turning reamer CLOCKWISE when
removing reamer.
d. Flush out all chips.
…
Fig. 13
cylinder head.
1/16" – 3/64"
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45°
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VALVE SEAT DIMENSIONS
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Fig. 14
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60° CUTTER
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15° CUTTER