Camshaft Sprocket; Cam Chain Tension Adjuster Inspection - Suzuki GSX-R750 Service Manual

1D-36 Engine Mechanical:

Camshaft Sprocket

Inspect the camshaft sprocket in the following
procedures:
1) Remove the intake and exhaust camshafts. Refer to
"Engine Top Side Disassembly (Page 1D-25)".
2) Inspect the teeth of each camshaft sprocket for wear
or damage.
If they are worn or damaged, replace the sprocket/
camshaft assembly and cam chain as a set.
3) Install the camshafts. Refer to "Engine Top Side
Assembly (Page 1D-27)".

Cam Chain Tension Adjuster Inspection

The cam chain tension adjuster is maintained to proper
tension automatically.
1) Remove the cam chain tension adjuster. Refer to
"Engine Top Side Disassembly (Page 1D-25)".
2) Holding the cam chain tension adjuster as shown in
the figure, compress the plunger by turning the
adjuster body until the outer circlip "A" reaches the
groove "B".
3) Hook the outer circlip "A" into the groove "B", then
turn the plunger head clockwise more than 90° to
make a little play in the inner thread mechanism.
"B"
"A"
NOTE
B838H21406022
If it is difficult to compress the plunger
because of internal engine oil, disassemble
the adjuster by releasing the inner circlip "C"
and spill out the oil.
CAUTION
!
Do not turn the adjuster body until the outer
circlip "A" exceeds the groove "B".
If the inner circlip "C" is caught in the groove
"B", plunger may not go out automatically
from the adjuster body even if pushing force
is applied on the head.
In such case, it needs to be disassembled.
I837H1140245-01
B838H21406023
4) Check that the plunger goes out automatically when
tapping its head "D". If it does not work smoothly,
replace the cam chain tension adjuster with a new
one.
I823H1140355-01
"D"
5) Install the cam chain tension adjuster. Refer to
"Engine Top Side Assembly (Page 1D-27)".
"C"
"A"
"B"
I823H1140365-01
I823H1140366-01
I823H1140367-01