Yanmar 1GM10V Specifications download pdf (Page 50)

Tightening Fasteners

Use the correct amount of torque when you

tighten fasteners on the engine. Applying

excessive torque may damage the fastener

or component and not enough torque may

cause a leak or component failure. When

working on critical components that require

calibrated tools, special procedures and

specific tightening sequences, consult with

your Yanmar distributor or dealer.

NOTICE: The tightening torque in the

Standard Torque Chart

should be applied only to

the bolts with a “7” head

(JIS strength classification:

7T). Apply 60% torque to

bolts that are not listed. Apply 80%

torque when tightened to aluminum

alloy.

Bolt diameter x pitch

(mm)

M6x1.0 M8x1.25 M10x1.5 M12x1.75 M14x1.5 M16x1.5

Tightening

Torque

N·m 11.0 ± 1.0 26.0 ± 3.0 50.0 ± 5.0 90.0 ± 10.0 140.0 ± 10.0 230.0 ± 10.0

kgf·m 1.1 ± 0.1 2.7 ± 0.3 5.1 ± 0.5 9.2 ± 1.0 14.3 ± 1.0 23.5 ± 1.0

lb-ft 8.0 ± 0.7 19.0 ± 2.1 37 ± 3.6 66.0 ± 7.2 103 ± 7.2 170 ± 7.2

lb-in — — — — — —

PERIODIC MAINTENANCE

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Yanmar 1GM10V Specifications Page 50