Need to know the best way to remove the oil pan?

[sgoodhope]

Hello, new guy here, I need to know the best way to remove the oil pan. Is it buy taking the motor out? Or dropping the front end? Let me know. You can contact me at sgoodhope@hotmail.com

[More Power]

The stamped-steel pan comes off pretty easily, but the aluminum crankcase is a bit more work - in the truck. If you expect to do more work (i.e. remove connecting rods, oil pump etc.), removing the engine might be a better option.

Jim

[sgoodhope]

Hello again, I now have the trans pulled away from the block. Just getting ready to go and drop the 2 bolts holding the upper pan in place. I guess I will just have to figure it out along the way. Replys are slow and not very forth coming. One thing that would be nice to know is what is the torque spec on the piston rod bolts. I will post again after the job is done to let everyone know how it went.

[Duramaster]

What are you doing? Inspecting or replacing? Bearings usually aren't a problem on the DMAX engine. I personally have seen LB7 engines go 300K.

Anyway, torque specs for the LB7 is::

Well........... sorry, I just tried to look up the specs on the GM SI website. The website is currently down? I will try again later for you.

[sgoodhope]

My injectors started to go. I took it to GM. They ran there diagnostics and found that the right bank was running a return rate of 61ml and the left was 42ml. They replaced the injectors and buttoned it back up. When running the truck for the first time they noticed a miss. Pulled the glow plugs and did a compression test. All cylinders were at 390f/lb except # 3. It was dead. They called me up and said do you have 5000.00 so we can fix your truck? I said I will do it myself. Right now I just have a fuel line to remove and a few motor mount bolts and the motor will be out of the truck by noon. I already took the head off and it has been repaired with a new valve seat and valve pluse a 2thou decking to make sure it seats on the head gasket the first time. Now I have to pull the piston and replace it. It is toast. Luckly there was little to no damage to the cylinder it self a light hone should do the trick. Once I have it back together I will run a compression test on it before I install the glow plugs to make sure I have good pressure on # 3.

[Duramaster]

Well then you need LOTS OF TORQUE SPECS! If you are going to mount the engine to a stand, you need to remove the rear aluminum flywheel housing.

QUOTE FROM GM SI::::::::::::::::

Caution: Do not mount the engine to a engine stand by the flywheel housing. The aluminum flywheel housing is not designed to support the weight of the engine when mounted to a typical rear-mount engine stand. Mounting the engine stand to the aluminum flywheel housing may result in engine damage and serious personal injury.

Fastener Tightening Specifications
Application
Specification

Metric
English

A/C Compressor Bolt
50 N·m
37 lb ft

Air Cleaner Outlet Duct Clamp
8 N·m
71 lb in

Air Conditioning Compressor/Power Steering Pump Bracket Bolt
46 N·m
34 lb ft

Battery Cable Bracket Bolt
12 N·m
106 lb in

Battery Cable Bracket Nut
8 N·m
71 lb in

Bypass Pipe Bolt
21 N·m
15 lb ft

Camshaft Gear Bolt
234 N·m
173 lb ft

Camshaft Position Sensor Bolt
10 N·m
89 lb in

Camshaft Position Sensor Exciter Ring Bolt
9 N·m
80 lb in

Camshaft Thrust Plate Bolt
22 N·m
16 lb ft

Charged Air Cooler Bolt
21 N·m
15 lb ft

Charged Air Cooler Clamp
8 N·m
71 lb in

Connecting Rod Cap Bolt - Angular Tightening Method
1st Step 64 N·m
1st Step 47 lb ft

2nd Step 30 degrees
2nd Step 30 degrees

3rd Step 30 degrees
3rd Step 30 degrees

Coolant Pipe to Water Pump Nut
25 N·m
18 lb ft

Cooling Fan Pulley
41 N·m
30 lb ft

Crankshaft Balancer Bolt
1st Step 100 N·m
1st Step 74 lb ft

2nd Step 105 degrees
2nd Step 105 degrees

Crankshaft Bearing Cap Bolt - Angular Tightening Method
1st Step 98 N·m
1st Step 72 lb ft

2nd Step 132 N·m
2nd Step 97 lb ft

3rd Step 30 degrees
3rd Step 30 degrees

Crankshaft Bearing Cap Side Bolt
78 N·m
58 lb ft

Crankshaft Position Sensor Bolt
10 N·m
89 lb in

Crankshaft Position Sensor Spacer Bolt
10 N·m
89 lb in

Crossmember Bolt
100 N·m
74 lb ft

Cylinder Head M12 Bolt - Angular Tightening Method
1st Step 50 N·m
1st Step 37 lb ft

2nd Step 80 N·m
2nd Step 59 lb ft

3rd Step 60 degrees

4th Step 60 degrees

Cylinder Head M8 Bolt
25 N·m
18 lb ft

Drive Belt Tensioner Pulley Bolt
41 N·m
30 lb ft

EGR Bolt - California Emissions
20 N·m
15 lb ft

EGR Bracket Bolt - California Emissions
20 N·m
15 lb ft

EGR Valve Nut - California Emissions
19 N·m
14 lb ft

Engine Block Coolant Plug
18 N·m
13 lb ft

Engine Block Ground Bolt
34 N·m
25 lb ft

Engine Mount Through Bolt to Frame
75 N·m
55 lb ft

Engine Mount to Block Bolts
58 N·m
43 lb ft

Engine Mount to Frame Bolt
65 N·m
48 lb ft

Engine Shield Bolt
20 N·m
15 lb ft

Exhaust Heat Shield Nut
9 N·m
80 lb in

Exhaust Manifold Bolt/Nut
38 N·m
28 lb ft

Exhaust Manifold Heat Shield Bolts
8 N·m
71 lb in

Exhaust Outlet Clamp
15 N·m
11 lb ft

Exhaust Outlet Heat Shield Bolts
8 N·m
71 lb in

Exhaust Outlet Pipe Bolt
53 N·m
39 lb ft

Exhaust Pipe Bolt
53 N·m
39 lb ft

Exhaust Pipe Bracket Bolt
34 N·m
25 lb ft

Exhaust Pipe Clamp
40 N·m
30 lb ft

Exhaust Pipe Heat Shield Bolts
8 N·m
71 lb in

Fan Pulley Bracket Bolt
46 N·m
34 lb ft

Flywheel Bolt - Angular Tightening Method
1st Step 79 N·m
1st Step 58 lb ft

2nd Step 60 degrees
2nd Step 60 degrees

3rd Step 60 degrees
3rd Step 60 degrees

Flywheel Housing Bolt - Black Circle Mark
80 N·m
60 lb ft

Flywheel Housing to Upper Oil Pan Bolt - Black Triangle Mark
50 N·m
37 lb ft

Front Engine Cover Bolt
21 N·m
15 lb ft

Fuel Block Bolt
25 N·m
18 lb ft

Fuel Filter Bracket Bolt
21 N·m
15 lb ft

Fuel Injection Control Module Bolt
20 N·m
15 lb ft

Fuel Injection Control Module Bracket Bolt
21 N·m
15 lb ft

Fuel Injection Control Module Connector Bolt
10 N·m
89 lb in

Fuel Injection Control Module Connector Bracket Bolt
21 N·m
15 lb ft

Fuel Injection Control Module Cooler Eye Bolt
27 N·m
20 lb ft

Fuel Injection Pipe Nut
41 N·m
30 lb ft

Fuel Inlet Pipe Bracket Bolt
21 N·m
15 lb ft

Fuel Pipes Bracket Bolt
25 N·m
18 lb ft

Fuel Rail Assembly Bolt
25 N·m
18 lb ft

Fuel Rail Connector
45 N·m
33 lb ft

Fuel Return Pipe Eye Bolt - Cylinder Head Side
17 N·m
12 lb ft

Fuel Return Pipe Eye Bolt - Injector Side
16 N·m
12 lb ft

Fuel Return Pipe Sleeve Nut
41 N·m
30 lb ft

Fuel Return Sleeve Unit
41 N·m
30 lb ft

Fuel Injection Pump Assembly to Cylinder Block Bolt
21 N·m
15 lb ft

Fuel Injection Pump to Bracket Bolt
21 N·m
15 lb ft

Fuel Injection Pump Drive Gear Nut
70 N·m
52 lb ft

Fuel Line Bracket Nut
21 N·m
15 lb ft

Fuel Temperature Sensor Eye Bolt
15 N·m
11 lb ft

Function Block Nut
25 N·m
18 lb ft

Function Block to Injection Pipe Nut
41 N·m
30 lb ft

Generator Bracket Bolt
50 N·m
37 lb ft

Generator Positive Cable Nut
9 N·m
80 lb in

Glow Plug
18 N·m
13 lb ft

Glow Plug Connector Nut
2 N·m
18 lb in

Glow Plug Power Feed Nut
15 N·m
11 lb ft

Glow Plug Relay Assembly Bolt
25 N·m
18 lb ft

Heater Outlet Pipe/Nose Bolt
25 N·m
18 lb ft

Heater Outlet Pipe/Hose Nut
9 N·m
80 lb in

Heater Pipe Bolt
21 N·m
15 lb ft

Hood Hinge Bolt
25 N·m
18 lb ft

Idle Pulley Bolt/Screw
37 N·m
27 lb ft

Injector Bracket Bolt
50 N·m
37 lb ft

Injector Harness Bracket Bolt
9 N·m
80 lb in

Injector Terminal Nut
2 N·m
18 lb in

Injector Pipe Lock Plate Screws
4 N·m
35 lb in

Intake Air Heater
50 N·m
37 lb ft

Intake Air Heater Terminal Nut
4 N·m
35 lb in

Intake Manifold Bolts/Nuts
21 N·m
15 lb ft

Intake Manifold Tube Bolts/Nuts
9 N·m
80 lb in

Oil Cooler Adapter Bolts
21 N·m
15 lb ft

Oil Cooler Adapter Nuts
25 N·m
18 lb ft

Oil Cooler Assembly Bolts
25 N·m
18 lb ft

Oil Cooler Adapter Stud
10 N·m
89 lb in

Oil Drain Plug
84 N·m
62 lb ft

Oil Fill Tube Bolt
21 N·m
15 lb ft

Oil Filter
24 N·m
18 lb ft

Oil Gallery Plugs
53 N·m
39 lb ft

Oil Level Indicator Tube Bolt
21 N·m
15 lb ft

Oil Level Sensor Bolt
10 N·m
89 lb in

Oil Pan Bolts/Nuts - Lower
10 N·m
89 lb in

Oil Pan Bolt - Upper
20 N·m
15 lb ft

Oil Pan Skid Plate Bolt
20 N·m
15 lb ft

Oil Pressure Sensor Unit
30 N·m
22 lb ft

Oil Pressure Relief Valve
39 N·m
29 lb ft

Oil Pump Bolt
21 N·m
15 lb ft

Oil Pump Driven Gear Nut
100 N·m
74 lb ft

Oil Pump Gear Cover Bolt
21 N·m
15 lb ft

Oil Strainer Bolts/Nuts
25 N·m
18 lb ft

Piston Cooling Nozzle Eye Bolt
21 N·m
15 lb ft

Positive Cable Junction Block Bracket to Power Steering Pump Bolt
9 N·m
80 lb in

Positive Crankcase Ventilation Cover Screws
4 N·m
35 lb in

Positive Crankcase Ventilation Oil Separator Bracket Nut
25 N·m
18 lb ft

Power Steering Pump Bracket Bolt
50 N·m
37 lb ft

Power Steering Pump Bolt
50 N·m
37 lb ft

Power Steering Pump Bracket Bolt
46 N·m
34 lb ft

Rocker Arm Shaft Bracket Bolt
41 N·m
30 lb ft

Starter Motor Bolt
78 N·m
58 lb ft

Transmission Fill Tube Nut
18 N·m
13 lb ft

Thermostat Housing Bolts/Nuts
25 N·m
18 lb ft

Thermostat Cover Bolt
21 N·m
15 lb ft

Torque Converter Bolt
60 N·m
44 lb ft

Transmission Oil Cooler Clip Nut
9 N·m
80 lb in

Turbocharger Bolt
108 N·m
80 lb ft

Turbocharger Boost Sensor Bolt
10 N·m
89 lb in

Turbocharger Coolant Outlet Pipe Bracket Bolts
21 N·m
15 lb ft

Turbocharger Heat Shield Bolts
9 N·m
80 lb in

Turbocharger Inlet Duct to Turbocharger Bolt
9 N·m
80 lb in

Turbocharger Oil Return Pipe Stud
10 N·m
89 lb in

Turbocharger Oil Supply Hose Eye Bolt
34 N·m
25 lb ft

Turbocharger Oil Return Pipe Bolts/Nuts
21 N·m
15 lb ft

Turbocharger Thermostatic Coolant Valve

60 N·m
44 lb ft

Upper Oil Pan to Flywheel Housing Screws
20 N·m
15 lb ft

Vacuum Pump Nuts - California Emissions
22 N·m
16 lb ft

Valve Adjusting Screw Nut
22 N·m
16 lb ft

Valve Lifter Holdown Bracket Bolt
11 N·m
97 lb in

Valve Rocker Arm Cover Bolt - Lower
10 N·m
89 lb in

Valve Rocker Arm Cover Bolt - Upper
8 N·m (Two Times)
71 lb in (Two Times)

Water Outlet Bolts
25 N·m
18 lb ft

Water Pump Bolt
21 N·m
15 lb ft

[Duramaster]

There are also three different thicknesses of head gasket plus a right and a left. You will need to check the piston protrusion of the new piston/ bearing assy before assy. Check your e-mail for the procedure. Remember to use new head bolts, rod bolts, crankshaft bearing cap bolts too................. You might try and get yourself a good manual for reference. This isn't your everyday 6.5 diesel! ;)