Special Torque Chart - Yanmar BY Series Service Manual

Special Torque Chart

SPECIAL TORQUE CHART
System
Engine Block
Clamping and Guide Rails to
Torsion Damper
Connecting Rod and
Bearing
Cylinder Head with
Cover
Camshaft
Oil Sump
Timing Case Covers
BY Service Manual
Component
Main Bearing
Replace, wash and oil
Coolant Drain Plug to
Crankcase
Crankcase
Engine Mount Nut
Torsional Vibration Damper
to Crankshaft
Connecting Rod Bolts
Replace, wash and oil
Cylinder Head Bolts
Replace, wash and oil
Seal Plug
Replace screws
Sprocket to Camshaft
Camshaft Bearing Cap Bolt
Oil Drain Plug
Oil Sump to Crankcase
Oil Deflector to Crankcase
Lower Section
Timing Case Cover Bolt
Guide Rail Pin
Plug to Timing Case Cover
Plug to Timing Case Cover
Model Thread
4BY M10x80
6BY Steel Bolts
4BY
M14x1.5 Replace Sealing Ring
6BY
4BY
M14
6BY
4BY
M20
6BY
1st Torque Angle
4BY M18x1.5
2nd Torque Angle
3rd Torque Angle
6BY M10x86 1st Torque Angle
2nd Torque Angle
Assembly Torque
4BY M10x80
6BY 12.9
Initial Torque then
Loosen all bolts 180°
4BY
M12x1.5
6BY
1st Torque Angle
2nd Torque Angle
4BY
M14x1.5
6BY
4BY
M7x19
6BY
4BY
-
6BY
6BY M12x1.5
6BY M8x26
6BY M6x16 Thread-Tapping Screw
4BY Initial Torque of 5 N·m
-
6BY
4BY Strength Thread Lock
-
6BY and Sealer to the
4BY
M30x1
6BY
4BY
M40x1.5
6BY
Comments Specification
Initial Torque 23 N·m (204 in.-lb)
Torque Angle
25 N·m (221 in.-lb)
Torque 20 N·m (177 in.-lb)
Torque 300 N·m (221 ft-lb)
Initial Torque 100 N·m (74 ft-lb)
Initial Torque 40 N·m (30 ft-lb)
5 N·m (44 in.-lb)
Initial Torque 20 N·m (177 in.-lb)
Torque angle
80 N·m (59 ft-lb)
2nd Torque 50 N·m (37 ft-lb)
- 30 N·m (22 ft-lb)
- 15 N·m (133 in.-lb)
- 10 N·m (89 in.-lb)
Replace Seal 25 N·m (221 in.-lb)
- 20 N·m (177 in.-lb)
10 N·m (89 in.-lb)
14 N·m (124 in.-lb)
(44 in.-lb)
Apply Medium
20 N·m (177 in.-lb)
Threads
Replace Seal 70 N·m (52 ft-lb)
Replace Seal 30 N·m (22 ft-lb)
ENGINE
Plus 90°
60°
60°
30°
60°
60°
70°
90°
90°
5-11