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TQ Lim

The document outlines the tightening torques for various components of the cylinder block, including specifications for engine mounts, main bearings, and timing gear. It provides detailed torque values and steps for tightening, emphasizing that certain bolts should not be reused. Additionally, it includes diagrams for proper application of sealants and tightening sequences.

Uploaded by

Syed Irfan Basha
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
28 views5 pages

TQ Lim

The document outlines the tightening torques for various components of the cylinder block, including specifications for engine mounts, main bearings, and timing gear. It provides detailed torque values and steps for tightening, emphasizing that certain bolts should not be reused. Additionally, it includes diagrams for proper application of sealants and tightening sequences.

Uploaded by

Syed Irfan Basha
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Tightening torques cylinder block

Valid for serial numbers


Model Production site Serial number start Serial number stop
D12D

Front engine mount, cylinder block (M14) 175 Nm (129 lbf ft)
Front engine mount, cross member (M12) 85 Nm (62.7 lbf ft)
Rear engine mount, flywheel housing (M16) 245 Nm (180 lbf ft)
Rear engine mount, rubber pad: ��
step 1 ��
�� 170–180 Nm
step 2 (125.4–132.1 lbf ft)
255 Nm (188.1 lbf ft)
Main bearings: ��
step 1 150 ±20 Nm (110.6 ±15 lbf ft)
step 2 120° ±5°
Connecting rod caps ��
step 1 150 ±25 Nm (111 ±18 lbf ft)
step 2 90° ±3°
Bolt, piston cooling nozzle 24 Nm (17.7 lbf ft)
Thermostat housing ��
Step 1: 10 Nm (7.4 lbf ft)
Step 2: 30 Nm (22 lbf ft)

Timing gear

Timing gear plate 33 Nm (24.3 lbf ft)


Guide pin, timing gear plate 60 Nm (18.4 lbf ft)
Timing gears incl. ring gears, see tightening diagram
"Timing gear"

NOTE! The bolts may only be used 4 times


��
1. Drive gear, camshaft 35 ±3 Nm (26 ±2 lbf ft)
Step 1: 90° ±5°
Step 2: ��
2. Adjustable transfer gear 15 ±3 Nm (11 ±2 lbf ft)
Step 1: 120° ±5°
Step 2: ��
3. Transfer gear 15 ±3 Nm (11 ±2 lbf ft)
Step 1: 120° ±5°
Step 2: ��
4. Drive gear crankshaft 645±25 Nm (447 ±18 lbf ft)
Step 1: ��
5. Transfer gear 15 ±3 Nm (11 ±2 lbf ft)
Step 1: 120° ±5°
Step 2: ��
40 Nm (29 lbf ft)
Transfer gear (power take-off, PTO)
Figure 1
Tightening diagram timing gear

Vibration damper
NOTE!
All bolts must be tightened according to step 1 before they are tightened according to step 2

Vibration damper: ��
step 1 20 Nm (14.8 lbf ft)
step 2 90°

Figure 2
Tightening diagram for vibration damper

Vibration damper, rear (only excavator version): ��


step 1 ��
step 2 60 ±5 Nm (44.2 ±4 lbf ft)
90° ±5°
Timing gear casing

Timing gear casing (upper) ��


M8: 24 ±4 Nm (18 ±3 lbf)
M10: 48 ±8 Nm (35 ±6 lbf)

Figure 3
Tightening diagram for upper timing gear casing

Figure 4
Application of sealant for upper timing gear casing

Figure 5
Application of sealant for lower timing gear casing

Flywheel

The bolts may not be reused.


Flywheel ��
Step 1: 60 ±5 Nm (44.3 lbf ft)
Step 2: 60° ±5°
Flywheel (Versions with power take-off, PTO) 245 Nm (181 lbf ft)
Figure 6
Tightening diagram for flywheel

Flywheel housing 140 Nm (103 lbf ft)

Figure 7
Tightening diagram for flywheel housing

Figure 8
Applying sealant on cylinder block

Packbox console (Versions with power take-off, PTO) 15 Nm (11 lbf ft)

Ladder frame

Step 1: Bolts 1-6 48 Nm (35.4 lbf ft)


Step 2: Bolts 7-26 15 Nm (11 lbf ft)
+ 90°
Figure 9
Tightening diagram ladder frame
Timing gear plate

Figure 10
Application sealant for timing gear plate

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