Cyl head, mains, connecting rods, piston squirters, injector hold down clamps, rocker gear and jakes.
could anyone give me the torque specs for c12 2ks.
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Aussie jake, Sep 18, 2013.
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[HR][/HR]-------------------------------------------------- head bolts ------------------------------------------------------------------------------------
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[TD="colspan: 2"][FONT=Geneva,Verdana,Tahoma,Arial,Helvetica,Sans-serif]View Image
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[TD][SIZE=-1]Illustration 2[/SIZE][/TD]
[TD][SIZE=-1]g01062278[/SIZE][/TD]
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- Install the gasket on cylinder head (18) .
- Install new cylinder head bolts (17) . If the engine is equipped with a compression brake, then also install new head bolt studs.
- Lubricate the following components with Tooling (G) : the bolt threads, the underside of the bolt heads and the washers. Follow Step 12 for the correct tightening procedure.
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[TD="colspan: 2"][FONT=Geneva,Verdana,Tahoma,Arial,Helvetica,Sans-serif]View Image[/FONT]![[IMG]](proxy.php?image=https%3A%2F%2Fsisweb.cat.com%2Fsisfiles%2Fg00%2F517%2Fg00517501.gif&hash=242a7b6549cdbb8597e1b9e5cc37b19e)
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[TD="colspan: 2"][HR][/HR][/TD]
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[TD][SIZE=-1]Illustration 3[/SIZE][/TD]
[TD][SIZE=-1]g00517501[/SIZE][/TD]
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[TD="colspan: 2"][SIZE=-1][/SIZE][SIZE=-1]Tightening Sequence[/SIZE]
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Note: Engines that are equipped with a compression brake will have three head bolt studs. Install the head bolt studs in positions (2) , (8) , and (10) . Tighten the head bolt studs in sequence with the cylinder head bolts.
- Tighten the cylinder head bolts according to the following procedure:
- Tighten bolt (1) through bolt (26) in a numerical sequence to a torque of 160 ± 15 N·m (120 ± 11 lb ft).
- Tighten bolt (1) through bolt (26) again in a numerical sequence to a torque of 160 ± 15 N·m (120 ± 11 lb ft).
- Place an index mark on each bolt head. Turn bolt (1) through bolt (26) in a numerical sequence for an additional 90 degrees (1/4 turn).
- Loosen bolt (1) through bolt (26) until the washers are loose under the bolt heads.
- Tighten bolt (1) through bolt (26) in a numerical sequence to a torque of 160 ± 15 N·m (120 ± 11 lb ft).
- Tighten bolt (1) through bolt (26) again in a numerical sequence to a torque of 160 ± 15 N·m (120 ± 11 lb ft).
- Place an index mark on each bolt head. Turn bolt (1) through bolt (26) in a numerical sequence for an additional 90 degrees (1/4 turn).
- Tighten bolt (27) through bolt (33) in a numerical sequence to a torque of 28 ± 7 N·m (20 ± 5 lb ft).
- Install the head bolt spacers on the three head bolt studs. Tighten the three head bolt studs to a torque of 100 ± 20 N·m (75 ± 15 lb ft).[FONT=Arial, Helvetica, sans-serif]--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------[/FONT]----------------- injector -------------------------------------------------------------- Note: Use new bolt (5) .Install spacer assembly (6) and bolt (5) that holds the electronic unit injector in place.
- Pull the electronic unit injector completely into the bore. Tighten the bolt according to the following procedure.
- Tighten the bolt for the electronic unit injector to 30 ± 7 N·m (22 ± 5 lb ft).
- Loosen the bolt until you can turn the bolt by hand.
- Tighten the bolt for the electronic unit injector again to 30 ± 7 N·m (22 ± 5 lb ft).
- Install harness assembly (2) on electronic unit injector (3) . Tighten the nuts to a torque of 2.5 ± 0.25 N·m (22 ± 2 lb in).
- Install bridge assemblies (4) onto the valve stems.[FONT=Arial, Helvetica, sans-serif]-------------------------------------------------------------------- rods ------------------------------------------------------------------- [/FONT]Install the upper half of connecting rod bearing (4) into connecting rod (3). Ensure that the bearing tab engages with the slot in the connecting rod.
- Apply clean engine oil on the surface of the upper half of connecting rod bearing (4) .
- Position connecting rod (3) and connecting rod bearing (4) on the crankshaft.
- Install the lower half of connecting rod bearing (5) in corresponding connecting rod cap (2). Ensure that the bearing tab engages with the groove in connecting rod cap (2) .
- Apply clean engine oil on the surface of the lower half of connecting rod bearing (5) .
- Install connecting rod cap (2) on the corresponding connecting rod. Ensure that the numbers are on the same side.
- Install connecting rod cap bolts (1). Tighten the bolts to a torque of 130 ± 7 N·m (95 ± 5 lb ft).
- Place an index mark on each bolt head. Tighten each bolt for an additional 60 ± 5 degrees (1/6 turn).
- Repeat Steps 1 through 8 in order to install the remaining connecting rod bearings.[FONT=Arial, Helvetica, sans-serif]----------------------------------------------------------------------------------------------------- mains --------------------------------------------------------------4 [/FONT]Place crankshaft main bearing caps (2) in position on the cylinder block. Place clean engine oil or Tooling (C) on the bolt threads and the washer face. Install bolts (1) .
- Tighten the bolts to a torque of 95 ± 5 N·m (70 ± 4 lb ft). Place an index mark on each bolt head. Tighten each bolt for an additional 90 ± 5 degrees (1/4 turn).
- Check the end play of the crankshaft with Tooling (B) . The end play must be 0.10 mm (0.004 inch) to 0.50 mm (0.020 inch).Note: The crankshaft end play is controlled by crankshaft thrust bearings (4) . Thrust bearings (4) are located at the center of the crankshaft.[FONT=Arial, Helvetica, sans-serif]-------------------------------------------------------------------------------------------- cooling jets ------------------------------------------------[/FONT]Position piston cooling jet (2) and install bolt (1) in each cylinder. Tighten the bolt to a torque of 35 ± 3 N·m (26 ± 2 lb ft).
----------------------------------------------------------------------------------------------------------------- jakes --------------------------------------------------
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[TD="colspan: 2"][FONT=Geneva,Verdana,Tahoma,Arial,Helvetica,Sans-serif]View Image[/FONT]![[IMG]](proxy.php?image=https%3A%2F%2Fsisweb.cat.com%2Fsisfiles%2Fg00%2F521%2Fg00521562.jpg&hash=ec398729f76f2ac9f1291e9f4d81d43e)
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[TD][SIZE=-1]Illustration 1[/SIZE][/TD]
[TD][SIZE=-1]g00521562[/SIZE][/TD]
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[/TABLE]- Position compression brake housing (4) on the studs.
- Install nuts (1) and tighten to a torque of 80 ± 15 N·m (60 ± 11 lb ft).
- Install bolt (3) and tighten to a torque of 55 ± 10 N·m (41 ± 7 lb ft).
- Connect harness assembly (2) to the solenoid valve on the compression brake.[FONT=Arial, Helvetica, sans-serif]--------------------------------------------------------------------------- metric torque specs ------------------------- [/FONT][h=2]Metric (ISO) Fasteners[/h]SMCS - 7553
[h=2]Metric (ISO) Nuts and Bolts[/h]
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[TD="colspan: 2"][FONT=Geneva,Verdana,Tahoma,Arial,Helvetica,Sans-serif]View Image[/FONT]![[IMG]](proxy.php?image=https%3A%2F%2Fsisweb.cat.com%2Fsisfiles%2Fg00%2F909%2Fg00909614.gif&hash=efa21bc4b252d894860c81125930c497)
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[TD][SIZE=-1]Illustration 1[/SIZE][/TD]
[TD][SIZE=-1]g00909614[/SIZE][/TD]
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Note: The following table has the recommended standard torque values for metric nuts and bolts for use on all Caterpillar equipment and Mitsubishi engines.
[TABLE]
Table 1[TR]
[TH]Thread Size
mm [/TH]
[TH="colspan: 2"]Torque [/TH]
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[TD]M6 [/TD]
[TD="colspan: 2"]12 ± 3 N·m (105 ± 27 lb in) [/TD]
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[TD]M8 [/TD]
[TD="colspan: 2"]
28 ± 7 N·m (250 ± 62 lb in) [/TD]
[/TR]
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[TD]M10 [/TD]
[TD="colspan: 2"]
55 ± 10 N·m (41 ± 7 lb ft) [/TD]
[/TR]
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[TD]M12 [/TD]
[TD="colspan: 2"]
100 ± 20 N·m (75 ± 15 lb ft) [/TD]
[/TR]
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[TD]M14 [/TD]
[TD="colspan: 2"]
160 ± 30 N·m (120 ± 22 lb ft) [/TD]
[/TR]
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[TD]M16 [/TD]
[TD="colspan: 2"]
240 ± 40 N·m (175 ± 30 lb ft) [/TD]
[/TR]
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[TD]M20 [/TD]
[TD="colspan: 2"]
460 ± 60 N·m (340 ± 44 lb ft) [/TD]
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[TD]M24 [/TD]
[TD="colspan: 2"]
800 ± 100 N·m (590 ± 75 lb ft) [/TD]
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[TD]M30 [/TD]
[TD="colspan: 2"]
1600 ± 200 N·m (1180 ± 150 lb ft) [/TD]
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[TD]M36 [/TD]
[TD="colspan: 2"]
2800 ± 350 N·m (2060 ± 260 lb ft) [/TD]
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Note: The following table has the recommended standard torque values for metric nuts and bolts for use on Perkins engines.
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Table 2[TR]
[TH]Thread Size
mm [/TH]
[TH="colspan: 2"]Torque [/TH]
[/TR]
[TR]
[TD]M6 [/TD]
[TD="colspan: 2"]
5 N·m (44 lb in) [/TD]
[/TR]
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[TD]M8 [/TD]
[TD="colspan: 2"]
22 N·m (195 lb in) [/TD]
[/TR]
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[TD]M10 [/TD]
[TD="colspan: 2"]
44 N·m (32 lb ft) [/TD]
[/TR]
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[TD]M12 [/TD]
[TD="colspan: 2"]
78 N·m (60 lb ft) [/TD]
[/TR]
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[TD]M14 [/TD]
[TD="colspan: 2"]
124 N·m (90 lb ft) [/TD]
[/TR]
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[TD]M16 [/TD]
[TD="colspan: 2"]
177 N·m (130 lb ft) [/TD]
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[TD]M18 [/TD]
[TD="colspan: 2"]
200 N·m (150 lb ft) [/TD]
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[TD]M20 [/TD]
[TD="colspan: 2"]
400 N·m (300 lb ft) [/TD]
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[TD]M24 [/TD]
[TD="colspan: 2"]
790 N·m (580 lb ft) [/TD]
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Note: The difference between Caterpillar standard torque values and Perkins standard torque values are due to different classes of fasteners. Caterpillar uses class 10.9 fasteners. Perkins uses class 8.8 fasteners. The different class of fasteners have different tensile strengths.
[h=2]Metric (ISO) Taperlock Studs[/h]Note: The following table has the recommended standard torque values for metric taperlock studs for use on all Caterpillar equipment and Mitsubishi engines.
[TABLE]
Table 3[TR]
[TH]Thread Size
mm [/TH]
[TH="colspan: 2"]Torque [/TH]
[/TR]
[TR]
[TD]M6 [/TD]
[TD="colspan: 2"]
8 ± 3 N·m (71 ± 27 lb in) [/TD]
[/TR]
[TR]
[TD]M8 [/TD]
[TD="colspan: 2"]
17 ± 5 N·m (150 ± 44 lb in) [/TD]
[/TR]
[TR]
[TD]M10 [/TD]
[TD="colspan: 2"]
35 ± 5 N·m (26 ± 4 lb ft) [/TD]
[/TR]
[TR]
[TD]M12 [/TD]
[TD="colspan: 2"]
65 ± 10 N·m (48 ± 7 lb ft) [/TD]
[/TR]
[TR]
[TD]M16 [/TD]
[TD="colspan: 2"]
110 ± 20 N·m (80 ± 15 lb ft) [/TD]
[/TR]
[TR]
[TD]M20 [/TD]
[TD="colspan: 2"]
170 ± 30 N·m (125 ± 22 lb ft) [/TD]
[/TR]
[TR]
[TD]M24 [/TD]
[TD="colspan: 2"]
400 ± 60 N·m (300 ± 44 lb ft) [/TD]
[/TR]
[TR]
[TD]M30 [/TD]
[TD="colspan: 2"]
750 ± 80 N·m (550 ± 60 lb ft) [/TD]
[/TR]
[TR]
[TD]M36 [/TD]
[TD="colspan: 2"]
1200 ± 150 N·m (880 ± 110 lb ft) [/TD]
[/TR]
[/TABLE]
- Pull the electronic unit injector completely into the bore. Tighten the bolt according to the following procedure.
BoxCarKidd Thanks this. - [TABLE]
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Glad a Coffee was your price I would have said a Steak Dinner!
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