Operation Manual

BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM
ENGINE
(B)
e1
!El(A)
3EEABAB1P121B
Free Length and Tilt of Valve Spring
1. Measure the free length (A) of valve spring with vernier calipers.
If the measurement is less than the allowable limit, replace it.
2. Put the valve spring on a surface plate, place a square on the
side of the valve spring.
3. Check to see if the entire side is in contact with the square.
Rotate the valve spring and measure the maximum tilt (8).
If the measurement exceeds the allowable limit, replace it.
4. Check the entire surface
of the valve spring for scratches.
If there
is any defect, replace it.
Factory spec.
Free length (A)
Allowable limit
31.3 to 31.8 mm
1.232 to 1.252 in.
28.4 mm
1.118 in.
1. 2mm
ITilt (8)
IAllowable limit
0.047 in.
1
(A) Free length
(8) Tilt
W11157830
Valve Spring Setting Load
1. Place the valve spring on a tester and compress it to the same
length it
is actually compressed the engine.
2. Read the compression load on the gauge.
3. If the measurement is less than the allowable limit, replace it.
3EEABAB1P122A
64.7 N /27.0 mm
Factory spec. 6.6 kgf
/27.0 mm
Setting load /
14.6 Ibs
/1.063 in.
Setting length
54.9 N
/27.0 mm
Allowable limit 5.6 kgf
127.0 mm
12.3 Ibs
11.063 in.
3EEABAB1P123A
W11177330
Oil Clearance between Rocker Arm and Rocker Arm Shaft
1. Measure the rocker arm shaft O.D. with an outside micrometer.
2. Measure the rocker arm I.D. with an inside micrometer, and then
calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the rocker
arm and measure the oil clearance again. If it still exceeds the
allowable limit, replace also the rocker arm shaft.
Oil clearance between
Factory spec.
0.016
to 0.045 mm
0.00063 to 0.00177
in.
rocker arm and rocker
arm shaft
Allowable limit
0.15 mm
0.0059 in.
Rocker arm shaft
0.0.
Factory spec.
10.473 to 10.484 mm
0.41232 to 0.41276 in.
Rocker arm
1.0.
Factory spec.
10.500
to 10.518 mm
0.41339 to 0.41410 in.
W11199710
1-S46