Suzuki 2000 Grand Vitara SQ625 Service Manual page 415

Rear Oil Seal
Carefully inspect oil seal for wear or damage. If lip portion is worn
or damaged, replace oil seal.
Flywheel
D If ring gear is damaged, cracked or worn, replace flywheel.
D If the surface contacting clutch disc is damaged, or excessively
worn, replace flywheel.
D Check flywheel for face runout with a dial gauge.
If runout exceeds its limit, replace flywheel.
Limit on runout: 0.2 mm (0.0078 in.)
Cylinder Block
Distortion of gasketed surface
D Using straightedge and thickness gauge, check gasketed sur-
face for distortion and, if flatness exceeds its limit, correct it.
Flatness Limit: 0.06 mm (0.0024 in.)
Honing or reboring cylinders
1) When any cylinder needs reboring, all other cylinders must also
be rebored at the same time.
2) Select oversized piston according to amount of cylinder wear.
Size Piston diameter
STD 83.970 – 83.990 mm (3.3059 – 3.3067 in.)
O/S 0.25 84.220 – 84.240 mm (3.3157 – 3.3165 in.)
O/S 0.50 84.470 – 84.490 mm (3.3256 – 3.3264 in.)
3) Using micrometer, measure piston diameter.
4) Calculate cylinder bore diameter to be rebored as follows.
D = A + B – C
D: Cylinder bore diameter to be rebored
A: Piston diameter as measured
B: Piston clearance = 0.02 – 0.04 mm
(0.0008 – 0.0015 in.)
C: Allowance for honing = 0.02 mm
(0.0008 in.)
ENGINE MECHANICAL (H25 ENGINE) 6A2-91