Operation Manual

BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM
ENGINE
(5) Cylinder
3EEABAB1P1
tAl
(B)
(el
-
r--
3EEABAB1 P155A
I
I
I
I
I
,
,
(1)
: ..
,
,
..'
,
I
(2)
,
,
'..,
I
I
r-
I
I
·
I
·
r-
,
•
,
I
I
I
,
I
I
,
•
•
I
I
·
....
·
,
•
·
·
I
I
.......
I--
-
3EEABAB1 P156A
(6) Oil Pump
Cylinder Wear
1. Measure the cylinder liner 1.0. at the six positions (see figure)
with a cylinder gauge to find the maximum and minimum 1.0:s.
2. Get the difference (Maximum wear) between the maximum and
the minimum 1.0.'s.
3. If the wear exceeds the allowable limit, bore and hone to the
oversize dimension. (Refer to
"Correcting Cylinder".)
4. Visually check the cylinder wall for scratches. If deep scratches
are found, the cylinder should be bored. (Refer to
"Correcting
Cylinder".)
to 72.019
mm
Factory spec.
to 2.83539 in.
Cylinder liner
1.0.
Allowable limit
(A) Top (a) Right-angled to Piston Pin
(B) Middle (b) Piston Pin Direction
(e) Bottom (Skirt)
W10360060
Correcting Cylinder
1. When the cylinder is worn beyond the allowable limit, bore and
hone it to the specified dimension.
Cylinder liner 1.0.
Factory spec.
72.250 to 72.269 mm
2.84449 to 2.84524 in.
Allowable limit
72.400
mm
2.85040 in.
Finishing
Hone to 2.2 to 3.0 IlmRz .
(0.000087
to 0.00012 in.Rz)
VVV
2. Replace the piston and piston rings with oversize ones.
Oversize: 0.25 mm (0.0098 in.)
Marking : 025
• NOTE
• When
the oversize cylinder is worn beyond the allowable
limit, replace the cylinder block with a new one.
(1) Cylinder I. O. (Before Correction)
(2) Cylinder
1.0. [Oversize]
W10367470
Rotor Lobe Clearance
1. Measure the clearance between lobes of the inner rotor and the
outer rotor with a thickness gauge.
2. If the clearance exceeds the factory specifications, replace the oil
pump rotor assembly.
0.03 to 0.14 mm
Rotor lobe clearance
Factory spec.
0.0012
to 0.0055 in.
W10378950
1-S58