Service Repair Manual
Models
305C CR Mini Hydraulic
Excavator
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Product: MINI HYD EXCAVATOR
Model: 305C CR MINI HYD EXCAVATOR HWJ
Configuration: 305 C CR Mini Hydraulic Excavator HWJ00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
S4Q2-T Engine
Media Number -KENR6788-04
Publication Date -01/09/2013
Date Updated -12/09/2013
i04015089
Timing Gear, Camshaft, and Oil Pan - Disassemble and Inspect
SMCS - 1206-040; 1206-015; 1210-015; 1210-040; 1302-015; 1302-040
Disassembling and inspecting timing gear, camshaft, and oil
pan
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305 C CR Mini Hydraulic Excavator HWJ00001-UP (MACHINE) POWERED BY S4...
2020/2/6
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Illustration 1
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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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305 C CR Mini Hydraulic Excavator HWJ00001-UP (MACHINE) POWERED BY S4...
2020/2/6
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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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305 C CR Mini Hydraulic Excavator HWJ00001-UP (MACHINE) POWERED BY S4...
2020/2/6
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Illustration 3
g02210559
1. Remove bolts from the timing gear case.
2. Remove the timing gear cas