Oil Pan
REMOVAL & INSTALLATION
To install:
NOTE: The oil pan gasket is reusable unless it is damaged. Do not remove the gasket from the oil pan groove unless gasket replacement is required.
REMOVE OIL LEVEL INDICATOR HARNESS CONNECTOR,REMOVE EXHAUST CROSSOVER PIPE.REMOVE THE TRANSAXLE ASSEMBLY FROM THE ENGINE
SOURCE: how much to change a oil pan gasket for 2001 grand prix 3.8 gt
If you want to repair the oil pan I would also check lower engine mount for leaking oil and cracks in anti sway bar near fitting's. This due to engine mount is oil filled. OEM sway bar is made of tubular steel and they crack easy. Replacement sway bar is solid steel. Here's the kicker. When they pull the lower frame to service oil pan. The engine mount and sway bar are attached to that frame. A honest mechanic should only charge for parts ($35 for mount and $100 for sway bar) and maybe a extra hour. My mechanic did all in 5 hours. FYI gasket is only $35 bucks. Good luck
SOURCE: Oil Pan Gasket Replacement - How to - GMC Yukon 2000
Removal Procedure
Important: The original oil pan gasket is retained and aligned to the oil pan by rivets. When installing a new gasket, it is not necessary to install new rivets.
DO NOT reuse the oil pan gasket. When installing the oil pan, install a NEW oil pan gasket.
Caution: Refer to Battery Disconnect Caution in Service Precautions.
10. Remove the engine wiring harness retainer bolts from the engine oil pan.
11. Remove the engine oil cooler pipe to oil pan bolt.
12. Remove the transmission oil cooler pipe retainer and the bolt from the oil pan.
13. Remove the starter motor. Refer to Starter Motor Replacement.
14. Remove the left closeout cover and bolt.
15. Remove the engine oil pan. Refer to Oil Pan Removal.
Installation Procedure
Important: The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the transmission bellhousing. To ensure the rigidity of the powertrain and correct transmission alignment, it is important that the rear of the block and the rear of the oil pan must NEVER protrude beyond the engine block and transmission bellhousing plane.
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SOURCE: Need torque specs for oil pan gasket
There likely is a spec for oil pan but unless you are a finatic, you really don't need to know what it is. Simple rule: Don't crank down ******* any fastener. If corners near crank ends have larger fasteners, you can tighten them a bit more than on siderails. Before tightening anything, install all bolts finger tight, to ensure that they are not cross threaded. To avoid warping pan, tighten from the center of the pan, working towards both ends, alternating from side to side as you go. When you are finished, go over it again, using the same amount of force on each bolt. As I said, end bolts can if larger in diameter, be tightened more but be careful not to tighten so much that you will either split or push the gasket out the sides.. Anywhere two gasket ends **** together, I recommend using a sensor -safe dab of silicone. An oil pan is not under any mechanical stress or pressure. I have used this method for many years and NEVER had one leak. If you really need #s, small fasteners get about 12-15in lbs, larger ones about 20.
SOURCE: Trying to drop the oil
done this on several i-6 f-150s. slide back or remove transmission, remove motor mount bolts from frame(not motor), jack motor up as far as possible without damaging egr valve or wiper motor when they hit, shim under motor mounts so that when you drop the jack the motor does not come back down any(the motor is well balanced on the mounts, it will not fall out of the truck like a v8 will), then remove the oil pan. you May have to remove the pickup tube(usually not), and you May have to rotate the crankshaft so that the lobes clear the oil pan. this is a common problem with these trucks due to the size of the oil pan(Huge), and the minimum pan to crossmember clearance
this is taken right from the manual.
thisth
Insert a screw on each side and at each end of the
pan to position the gasket.
2. Carefully position the oil pan in place, make
sure the gasket is not misaligned and tighten the
screws inserted in Step 1 finger-tight.
3. Install the remaining screw and tighten all to
specifications. Work from the center
outward in each direction.
Oil pan
Side screws 7 ft-lb
End screws 1 0 ft-lb
Drain plug 23 ft-lb
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