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Yanmar 4JH4E - Page 183

Yanmar 4JH4E
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4. Disassembly and reassembly
163
2) Align the “A” and “C” match marks of the idle
gear with the match marks of the camshaft
gear and the crankshaft gear.
3) Measure the idle gear, camshaft gear and
crankshaft gear backlash.
(12) Mounting the lube oil pump
Mount the lube oil pump to the gear case.
Note:
1) Before installing the outer/inner rotors, coat
them with lube oil (10W30).
2) Assemble the rotor so that the mark of the
rotor may come to the cover side.
3) Confirm that the rotor rotates smoothly.
(13) Mounting the gear case
1) Replace the used oil seal with new one. Coat
the inside and outside of the oil seals with
engine oil and press fit it into the gear case.
2) Apply the liquid gasket to the gear case.
Position the two knock pins and tighten the
bolts of the gear case.
Note:
Trim the liquid gasket if it protrudes onto the
oil pan mounting surface.
(14) Mounting the lube oil inlet pipe
Mount the lube oil inlet pipe on the bottom of
the cylinder block, using new gasket.
mm
Backlash
Standard Limit
0.07-0.15 0.17
Tightening torque Nm (kgfm)
Flush bolt 5.4-8.4 (0.55-0.86)
Tightening torque Nm (kgf•m)
Lube oil inlet pipe 26 (2.6)
A
C
Camshaft gear
Seawater pump gea
r
Idle gear
Crankshaft gear
014210-00E
010382-00E
Lube oil pump cover
Outer rotor
Inner rotor
Gear case
Oil seal
Pressure
control valve

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