Yanmar 6LY3 series Service Manual

SERVICE STANDARDS
Tightening Torque for Bolts and Nuts
14-10 6LY3 Service Manual
© 2007 Yanmar Marine International
TIGHTENING TORQUE FOR BOLTS AND NUTS
Main Bolt and Nut
No. Name
Thread
Diameter x Pitch
Lubricating Oil
Application
(thread portion and
seat surface)
Torque
1
Cylinder
Head Bolt
New Bolt
M14 x 1. 5 Coat with oil
1st: 118 N·m (12.0 kgf·m) (87lb-ft)
2nd: 177 N·m (18.0 kgf·m) (130 lb-ft)
3rd: 216-236 N·m (22.0-24.1 kgf·m) (159-174 lb-ft)
Used Bolt
1st: 108 N·m (11.0 kgf·m) (80 lb-ft)
2nd: 167 N·m (17.0 kgf·m) (128 lb-ft)
3rd: 196-216 N·m (20.0-22.0 kgf·m) (145-159 lb-ft)
2 Rod Bolt M12 x 1.25 Coat with oil 132.1-141.9 N·m (13.5-14.5 kgf·m) (97-105 lb-ft)
3 Flywheel Retainer Bolt M16 x 1. 5 Coat with oil 284-304 N·m (29.0-31.0 kgf·m) (209-224 lb-ft)
4
Bearing
Cap Bolt
New Bolt
M15 x 1.5 Coat with oil
245-265 N·m (25.0-27.0 kgf·m) (181-195 lb-ft)
Used Bolt 225-245 N·m (23.0-25.0 kgf·m) (166-181 lb-ft)
5
Crankshaft Pulley Bolt
(FC300 pulley)
M16 x 1.5 Coat with oil 216-236 N·m (22.3-24.1 kgf·m) (159-174 lb-ft)
6 Timer Housing Bolt M8 x 1.25 No oil 33.3-37.3N·m (3.4-3.8 kgf·m) (25-27 lb-ft)
7 Timer Gear Bolt M8 x 1.25 Coat with oil 34.8-38.8 N·m (3.5-4.0 kgf·m) (26-29 lb-ft)
8 Idler Gear Shaft Bolt M10 x 1.5 Coat with oil 62-66 N·m (6.3-6.7 kgf·m) (46-49 lb-ft)
9 Oil Pump Bolt M12 x 1.75 Coat with oil 98-118 N·m (10.0-12.0 kgf·m) (72-87 lb-ft)
10 Turbocharger V-Band Bolt 1/4-28 UNF
Coat with Moly Coat
on thread portion
5.4-7.4 N·m (0.55-0.75 kgf·m) (4-5 lb-ft)
11 Seawater Pump Gear Bolt M14 x 1.5 Coat with oil 73-83 N·m (7.4-8.5 kgf·m) (23-83 lb-ft)
12 Fuel Nozzle Sleeve M13 x 1.5 No oil 52.9-62.7 N·m (5.4-6.4 kgf·m) (22-25 lb-ft)
13 Nozzle Fastening Bolt M8 x 1.25 Coat with oil 29.4-33.4 N·m (3.0-3.4 kgf·m) (22-25 lb-ft)
14
Fuel Injection Pipe
Joint Nut
M12 x 1.5 No oil 22.5-26.5 N·m (2.3-2.7 kgf·m) (17-19 lb-ft)
15 Fuel Return Pipe Joint Bolt M6 x 1.0 No oil 7.0-9.0 N·m (0.7-0.9 kgf·m) (5-7 lb-ft)
16 Oil Filter (Full Flow) 1-12 UNF
Coat with oil on
O-ring
Hand-tighten then turn an additional 3/4 of a turn.
17 Oil Filter (Bypass) M25 x 1.5
Coat with oil on
O-ring
Hand-tighten then turn an additional one turn.
18
Silencer Installation Hose
Band
— — 2.5-3.5 N·m (0.25-0.36 kgf·m) (2-3 lb-ft)

Yanmar 6LY3 series Specifications

General

Brand	Yanmar
Model	6LY3 series
Category	Engine
Language	English