Technical Data:
TD/TAD520, TAD530/531/532
57
Group 20
Tightening torque
General tightening torques
Nm
(lbf.ft)
M6 standard screw 8.8 .......................................... 10
±1.5
(7.5
±1
lbf.ft)
M8 standard screw 8.8 .......................................... 25
±4
(18
±3
lbf.ft)
M10 standard screw 8.8 ........................................ 50
±8
(37
±6
lbf.ft)
M12 standard screw 8.8 ........................................ 80
±9
(59
±6.5
lbf.ft)
M14 standard screw 8.8 ........................................ 140
±25
(103
±18
lbf.ft)
Tightening torques
Nm
(lbf.ft)
Group 21 Engine
Engine mounting ................................................... 260
(192lbf.ft)
Starter motor ........................................................ 70
(51.6 lbf.ft)
Timing gear casing ............................................... 21
±2
(15.5
±1.5
lbf.ft)
Main bearing caps
Screws to main bearing caps are reusable only three times.
Step 1 ................................................................ 50
(37 lbf.ft)
Step 2 ................................................................. 60° angle tightening
Step 3 ................................................................. 60° angle tightening
Connecting rod big-end bearing
Use new screws every time.
Step 1 ................................................................ 50
(22 lbf.ft)
Step 2 ................................................................ 60° angle tightening
Step 3 ................................................................ 60° angle tightening
Flywheel
A) Flywheel with screws of max 30 mm length
Step 1: ............................................................... 20 – 30
(15 – 22 lbf.ft)
Step 2: ............................................................... 60° angle tightening
Step 3: ............................................................... 30° angle tightening
B) Flywheel with screws up to 45 mm length
Step 1: ............................................................... 20 – 30
(15 – 22 lbf.ft)
Step 2: ............................................................... 60° angle tightening
Step 3: ............................................................... 60° angle tightening
C) Flywheel with a screw length between 50 – 85 mm
Step 1: ............................................................... 30 – 40
(22 – 30 lbf.ft)
Step 2: ............................................................... 60° angle tightening
Step 3: ............................................................... 60° angle tightening
Flywheel housing. M12 ......................................... 99
±1
(73
±7
lbf.ft)
Flywheel housing. M16 ......................................... 243
±25
(179
±18
lbf.ft)
V-belt pulley
Screws to V-belt pulley are reusable only three times.
Step 1: ............................................................... 40 – 50
(30 – 37 lbf.ft)
Step 2: ............................................................... 60° angle tightening
Step 3: ............................................................... 60° angle tightening
Vibration damper .................................................. 70
Screw, rocker cover ............................................... 9
±1
(6.5
±0.7
lbf.ft)
Lock nut, valve clearance adjusting screw ............ 20
±2
(14.5
±1.5
lbf.ft)
Screws, rocker arm fixing ..................................... 21
(15.5 lbf.ft)
Screws, crankcase ventilation .............................. 9
±1
(6.6
±0.7
lbf.ft)
Summary of Contents for TAD420VE
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