Service Repair Manual
Models
304C CR Mini Hydraulic
Excavator
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Product: MINI HYD EXCAVATOR
Model: 304C CR MINI HYD EXCAVATOR FPK
Configuration: 304 C CR Mini Hydraulic Excavator FPK00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
S4Q2 Engine
Media Number -KENR6787-03
Publication Date -01/01/2013
Date Updated -29/01/2013
i04013730
Cylinder Head and Valve Mechanism - Disassemble and
Inspect
SMCS - 1100-015; 1100-040; 1102-015; 1102-040
Disassembling and inspecting cylinder head and valve
mechanism
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304 C CR Mini Hydraulic Excavator FPK00001-UP (MACHINE) POWERED BY S4...
2020/2/20
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Illustration 1
g02203053
Disassembling sequence
(1) Rocker cover
(2) Adjusting screw
(3) Bolt (short)
(4) Bolt (long)
(5) Valve cap
(6) Snap ring
(7) Rocker arm
(8) Rocket shaft bracket
(9) Rocket shaft spring
(10) Rocket shaft
(11) Push rod
(12) Cylinder head bolt
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304 C CR Mini Hydraulic Excavator FPK00001-UP (MACHINE) POWERED BY S4...
2020/2/20
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(13) Cylinder head
(14) Valve cotter
(15) Valve retainer
(16) Valve spring
(17) Inlet valve
(18) Exhaust valve
(19) Valve stem seal
(20) Cylinder head gasket
Removing rocker shaft assembly
Note: Always loosen shorter bolts first. Failing to do so may damage the rocker shaft bracket.
Illustration 2
g02203033
1. Loosen the rocker arm adjusting screws by rotating about one turn.
2. Loosen the shorter rocker bracket bolts first.
3. Then, loosen the longer rocker bracket bolts.
4. Remove the rocker bracket bolts, and remove the rocker shaft assembly from the cylinder head.
5. Remove push rods.
Disassembling rocker shaft assembly
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304 C CR Mini Hydraulic Excavator FPK00001-UP (MACHINE) POWERED BY S4...
2020/2/20
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Illustration 3
g02203034
1. Be sure to arrange the parts in order