Suzuki Intruder VZ1500, Руководство по обслуживанию

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Engine Mechanical: 1D-52
9) Install the valves and springs. Refer to “Cylinder
Head Disassembly and Assembly (Page 1D-45)”.
10) Install the cylinder head. Refer to “Engine Top Side
Assembly (Page 1D-32)”.
Valve Seat Repair
B940H21406027
The valve seats (1) for both the intake and exhaust
valves are machined to three different angles. The seat
contact surface is cut at 45
°
.
CAUTION
!
• The valve seat contact area must be
inspected after each cut.
• Do not use lapping compound after the
final cut is made. The finished valve seat
should have a velvety smooth finish but
not a highly polished or shiny finish. This
will provide a soft surface for the final
seating of the valve which will occur
during the first few seconds of engine
operation.
NOTE
After servicing the valve seats, be sure to
check the valve clearance after the cylinder
head has been reinstalled. Refer to “Valve
Clearance Inspection and Adjustment in
Section 0B (Page 0B-3)”.
Valve Spring
The force of the coil spring keeps the valve seat tight.
Weakened spring results in reduced engine power
output and often accounts for the chattering noise
coming from the valve mechanism.
Check the valve springs for proper strength by
measuring its free length and also by the force required
to compress it. If the spring length is less than the
service limit or if the force required to compress the
spring does not fall within the range specified, replace
spring as a set.
Special tool
(A): 09900–20102 (Vernier calipers (1/20 mm,
200 mm))
Valve spring free length
Service limit: (Inner) 34.4 mm (1.35 in)
Service limit: (Outer) 38.1 mm (1.50 in)
Valve spring tension
Standard: (Inner) 58 – 66 N (5.9 – 6.7 kgf, 13.1 – 15.0
Ibf-ft) 27.56 mm (1.09 in)
Standard: (Outer) 135 – 155 N (13.8 – 15.8 kgf, 30.4 –
34.9 Ib-ft) 31.06 mm (1.23 in)
Intake Exhaust
Seat angle 15
°
/45
°
/60
° ←
Seat width
0.9 – 1.1 mm
(0.035 – 0.043 in)
←
Valve
diameter
33 mm
(1.65 in)
30 mm
(1.18 in)
Valve guide
I.D.
5.500 – 5.512 mm
(0.2165 – 0.2170 in)
←
1
45
60
15
I822H1140363-01
Tension “a” Length “b”
Inner
58 – 66 N
(5.9 – 6.7 kgf, 13.1 – 15.0 lbs)
27.56 mm
(1.09 in)
Outer
135 – 155 N
(13.8 – 15.8 kgf, 30.4 – 34.9 lbs)
31.06 mm
(1.23 in)
(A)
I649G1140237-03
“ a ”
“ b ”
I649G1140238-03