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Old 08-11-2011, 02:04 AM   #1
mmore57
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Default 2001 SL2 Main Bearing Torque?

The Haynes Manual lists the torque for the
main bearing caps as 37 ft/lbs all except for the
No. 3 bearing cap which is listed at 10-12 ft/lbs.

Does anyone know if this is correct, or should all of
the main bearing caps be torqued to 37 ft/lbs?

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Old 08-11-2011, 09:00 PM   #2
off-track
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1997 SL2
Default Re: 2001 SL2 Main Bearing Torque?

My GM SI says:
Using a rubber mallet, rap the crankshaft rearward, then forward in the cylinder block to align the thrust bearing.
Apply a light coat of engine oil on the threads and under the heads of the cap bolts.
Install and uniformly tighten the 10 cap bolts in several passes, in the sequence shown. Tighten

INTAKE
8 1 4 5 9
7 3 2 6 10
EXHAUST

Tighten the Crankshaft Bearing Cap-to-Block 50 N·m (37 lbs ft).

Check that the crankshaft turns smoothly.
Check the crankshaft thrust clearance.
Thrust Clearance
Standard: 0.05-0.2 mm (0.002-0.0089 in)
Service Limit: 0.25 mm (0.0098 in) If the clearance is greater than maximum, replace the thrust bearing

...
1997 - SL2, barebones, 161k, Auto - Rebuild complete and.. burnt a valve 20k later Arrgh!
Purchased 114k 10/07
Added OEM CC

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Old 08-12-2011, 12:57 AM   #3
satlite440
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2001 SL2
Default Re: 2001 SL2 Main Bearing Torque?

+2





Service Information






2001 Saturn SL2/SC2/SW2 | SL, SL1, SC1, SW1, SL2, SC2, SW2 VIN Z Service Manual | Engine | Engine Mechanical - 1.9L | Repair Instructions | Document ID: 880790
--------------------------------------------------------------------------------


Engine Block Assemble


Tools Required






J 41742 Connecting Rod Guide







J 44057 Crankshaft Tie Plate Socket







SA9142E Piston Ring Compressor





Important:






The engine block requires the location dowel pins for the front cover, cylinder head, rear crankshaft seal carrier, and transaxle be installed with a brass driver. Dowel pins are installed until they bottom out in the cylinder block.







Thoroughly clean all parts to be assembled. Honed cylinders must be scrubbed with a solution of Tide® powdered laundry detergent, or equivalent and high pressure warm water prior to piston assembly. Before installing the parts, apply new engine oil to all sliding and rotating surfaces. Replace all gaskets, O-rings, and oil seals with new parts.


•Dowel pins are installed until they bottom out in the cylinder block.



•Install the dowel pins using a brass driver.




Important: Install the bearings with the oil holes in the block. The bearings with no holes must go in the main bearing caps.
•Install the main bearings.

Install the bearings in the cylinder block and the bearing caps.

Important: Inspect the alignment of the bearing oil hole to the block bulkhead oil feed hole. At least 50 percent of the feed hole must be open/exposed.
•Install the thrust bearing in the number 3 upper main bearing position of the block.



•Place crankshaft in cylinder block and coat with engine oil.
•Install the main bearing caps.

Important: The bearing caps are numbered 1-5 and have an arrow that points toward the front of the engine. No. 1 cap is at the front of the cylinder block.
•Install the bearing caps in their proper locations. The arrow on the bearing cap points toward front of the cylinder block.




Important: Use a rubber mallet and rap the crankshaft rearward, and forward in the cylinder block to ensure the thrust bearing is properly aligned.
•Using a rubber mallet, rap the crankshaft rearward, then forward in the cylinder block to align the thrust bearing.



•Apply a light coat of engine oil on the threads and under the heads of the cap bolts.



•Install and uniformly tighten the 10 cap bolts in several passes, in the sequence shown.

Tighten
Tighten the Crankshaft Bearing Cap-to-Block 50 N·m (37 lbs ft).
•Check that the crankshaft turns smoothly.
•Check the crankshaft thrust clearance.

Thrust Clearance






Standard: 0.05-0.2 mm (0.002-0.0089 in)







Service Limit: 0.25 mm (0.0098 in)







If the clearance is greater than maximum, replace the thrust bearing

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Old 08-12-2011, 12:59 AM   #4
satlite440
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2001 SL2
Default Re: 2001 SL2 Main Bearing Torque?

here is the pic
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