Cylinder Head Related Parts Inspection - Suzuki VLR1800 Service Manual

1D-51 Engine Mechanical:
Cam chain tensioner No. 2
Tighten the cam chain tensioner No. 2 nuts (1) to the
specified torque.
CAUTION
!
Replace the gasket with new ones.
Tightening torque
Cam chain tensioner No. 2 nut (a): 11 N·m (1.1 kgf-
m, 8.0 lb-ft)
1
(a)

Cylinder Head Related Parts Inspection

Refer to "Cylinder Head Disassembly and Assembly
(Page 1D-47)".
Cylinder Head Distortion
1) Decarbonize the combustion chambers.
2) Check the gasketed surface of the cylinder head for
distortion with a straightedge and thickness gauge,
taking a clearance reading at several places as
indicated. If the largest reading at any position of the
straightedge exceeds the limit, replace the cylinder
head.
Special tool
: 09900–20803 (Thickness gauge)
Cylinder head distortion
Service limit: 0.05 mm (0.002 in)
1
(a)
I822H1140144-01
B822H11406050
I822H1140146-01
Valve Stem Runout
Support the valve using V-blocks, and check its runout
using the dial gauge as shown in the figure. If the runout
exceeds the service limit, replace the valve.
Special tool
(A): 09900–20607 (Dial gauge (1/100 mm, 10
mm))
(B): 09900–20701 (Magnetic stand)
(C): 09900–21304 (V-block (100 mm))
Valve stem runout (IN. & EX.)
Service limit: 0.05 mm (0.002 in)
(A)
(C)
Valve head radial runout
Place the dial gauge at a right angle to the valve head
face and measure the valve head radial runout. If it
measures more than the service limit, replace the valve.
Special tool
(A): 09900–20607 (Dial gauge (1/100 mm, 10
mm))
(B): 09900–20701 (Magnetic stand)
(C): 09900–21304 (V-block (100 mm))
Valve head radial runout (IN. & EX.)
Service limit: 0.03 mm (0.001 in)
(A)
(C)
(B)
I649G1140231-03
(B)
I649G1140232-03