Service Repair Manual
Models
303C CR Mini Hydraulic
Excavator
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Product: MINI HYD EXCAVATOR
Model: 303C CR MINI HYD EXCAVATOR BXT
Configuration: 303C CR Mini Hydraulic Excavator BXT00001-UP (MACHINE) POWERED BY S3Q2 Engine
Disassembly and Assembly
S3Q2 and S3Q2-T Engines
Media Number -KENR6786-03
Publication Date -01/08/2015
Date Updated -18/08/2015
i04111938
Timing Gear, Camshaft, and Oil Pan - Disassemble and Inspect
SMCS - 1206-015; 1206-040; 1210-015; 1210-040; 1302-015; 1302-040
Disassembling and inspecting timing gear, camshaft, and oil
pan
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303C CR Mini Hydraulic Excavator BXT00001-UP (MACHINE) POWERED BY S3...
2020/2/25
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Illustration 1
g02315293
Disassembling sequence
(1) Crankshaft pulley
(2) Cover
(3) Timing gear case
(4) Baffle plate
(5) Idler gear
(6) Oil pan
(7) Oil pump
(8) Camshaft
(9) Front plate
Removing crankshaft pulley
Note: The bar that stops the crankshaft from turning may come off. Pay due attention to safety.
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303C CR Mini Hydraulic Excavator BXT00001-UP (MACHINE) POWERED BY S3...
2020/2/25
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Illustration 2
g02210558
1. Screw two guide bolts into the threaded holes at the rear end of the crankshaft. Stick a bar
across the guide bolts to prevent the crankshaft from turning.
2. Remove the crankshaft pulley.
3. Take out the woodruff key of the crankshaft.
Inspect the crankshaft pulley (1) for worn belt groove and worn oil seal contact surface.
Removing timing gear case
Note: The front plate is bolted to the crankcase from inside the gear case. Do not attempt to
remove the front plate together with the gear case by tapping.
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303C CR Mini Hydraulic Excavator BXT00001-UP (MACHINE) POWERED BY S3...
2020/2/25
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Illustration 3
g02210559
1. Remove bolts from the timing gear case.
2. Remove the timing gea