Toro Groundsmaster 300 Series Service Manual page 34

Engine (cont.)
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Item
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Piston
Type
Material
Piston Outside Diameter (skirt end)
Piston to Cylinder Wall Clearance
Oversize
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Piston Pin
Type
Outside Diameter
Pin to Piston Clearance
Pin to Connecting Rod Clearance
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Piston Rings
Number of Rings
3 Compression
1 Oil
Compression Ring Width
Oil Ring Width
Compression Ring Side Clearance
No. 1
No. 2
Oil Ring Side Clearance
Ring Gap
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Connecting Rod
Type
Bend and Twist
Big End Thrust Clearance
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Connecting Rod Bearings
Oil Clearance
Undersize
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Crankshaft
Type
Bend
End Play
Journal O.D.
Pin O.D.
Finish Undersize
Journal U.S. 0.25 mm (0.01 in.)
Journal U.S. 0.50 mm (0.02 in.)
Journal U.S. 0.75 mm (0.03 in.)
Pin U.S. 0.25 mm (0.01 in.)
Pin U.S. 0.50 mm (0.02 in.)
Pin U.S. 0.75 mm (0.03 in.)
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Specifications
Standard Specification
Solid
Aluminum alloy
73 mm (2.874 in.)
0.25, 0.50, 0.75 mm
(0.01, 0.02, 0.03 in.)
Semi-floating
19 mm (0.748 in.)
Press-fit load: 1000 + 500 kg
(2200 + 1100 lb.)
No. 1: Chrome plated, semi-keystone type
No. 2 and No. 3: Tapered
Chrome plated ring with coil expander
2 mm (0.079 in.)
3 mm (0.118 in.)
0.06 - 0.12 mm (0.0024 - 0.005 in.)
0.05 - 0.09 mm (0.002 - 0.004 in.)
0.03 - 0.07 mm (0.001 - 0.003 in.)
0.15 - 0.40 mm (0.006 - 0.016 in.)
Forged I-beam
0.05 mm (0.002 in.) max.
0.1 - 0.35 mm (0.004 - 0.014 in.)
0.25, 0.50, 0.75 mm
(0.01, 0.02, 0.03 in.)
Fully counterbalanced
Within 0.03 mm (0.001 in.)
0.05 - 0.205 mm (0.002 - 0.008 in.)
52 mm (2.047 in.)
42 mm (1.654 in.)
51.735 - 51.750 mm
(2.0368 - 2.0374in.)
51.485 - 51.500 mm
(2.0270 - 2.0276 in.)
51.235 - 51.250 mm
(2.0171 - 2.0177 in.)
41.700 to 41.715 mm
(1.6417 - 1.6423 in.)
41.450 - 41.465 mm
(1.6319 - 1.6325 in.)
41.200 - 41.215 mm
(1.6220 - 1.6226 in.)
Page 4 - 6
Repair Limit
0.15 mm (0.006 in.) max.
– 0.15 mm (– 0.006 in.) – 0.95 mm (– 0.037 in.)
– 0.15 mm (– 0.006 in.) – 0.95 mm (– 0.037 in.)
Groundsmaster
Service Limit
0.3 mm (0.012 in.)
0.08 mm (0.003 in.)
0.3 mm (0.012 in.)
0.2 mm (0.008 in.)
0.2 mm (0.008 in.)
1.5 mm (.060 in.)
0.5 mm (0.02 in.)
0.15 mm (0.006 in.)
0.05 mm (0.002 in.)
®
300 Series