S-65
WG972-E2, DF972-E2, WSM
GASOLINE / LPG ENGINE
Correcting Cylinder (Oversize)
1. When the cylinder is worn beyond the allowable limit, bore and
hone it to the specified dimension.
2. Replace the piston and piston rings with oversize ones.
Oversize : 0.5 mm (0.01969 in.)
Marking : 05
■
•When the oversize cylinder is worn beyond the allowable
limit, replace the cylinder block with a new one.
W10367470
(6) Oil Pump
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.
W10378950
Clearance between Outer Rotor and Pump Body
1. Measure the clearance between the outer rotor and the pump
body with a thickness gauge.
2. If the clearance exceeds the factory specifications, replace the oil
pump rotor assembly.
W10381420
Clearance between Rotor and Cover
1. Put a strip of plastigage onto the rotor face with grease.
2. Install the cover and tighten the screws.
3. Remove the cover carefully, and measure the amount of the
flattening with the scale and get the clearance.
4. If the clearance exceeds the factory specifications, replace oil
pump rotor assembly.
W10382660
Cylinder liner I.D.
Factory spec.
75.000 to 75.019 mm
2.95276 to 2.95350 in.
Allowable limit
75.150 mm
2.95866 in.
Finishing
Hone to 2.2 to 3.0 µmRz
(0.000087 to 0.00012 in.Rz)
∇∇∇.
(1) Cylinder I.D. (Before Correction) (2) Cylinder I.D. [Oversize]
Rotor lobe clearance Factory spec.
0.03 to 0.14 mm
0.0012 to 0.0055 in.
Clearance between
outer rotor and pump
body
Factory spec.
0.07 to 0.15 mm
0.0028 to 0.0059 in.
Clearance between rotor
and cover
Factory spec.
0.075 to 0.135 mm
0.00295 to 0.00531 in.
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