Removing Oil Pan From 98 Volvo S70: Step-By-Step Guide

The oil pan in a 1998 Volvo S70 can be removed by following these steps:

- Drain the oil and remove the oil filter.

- Remove the oil dipstick and its pipe.

- Release the oil cooler from the sump and hang it up at the rear.

- Remove the screw from the bracket for the fuel line.

- Slacken off all screws holding the oil sump. Remove all screws except for four.

- Carefully tap the sump with a rubber mallet until the joint and its liquid gasket are released.

- Remove the remaining screws and the sump.

- Clean the gasket surfaces on the oil sump and cylinder block.

- Apply liquid gasket to the sump and install new o-rings.

- Secure the oil sump loosely with a few screws, then tighten the remaining screws.

- Reinstall the pipe to the subframe, a new oil filter, and the oil drain plug with a new o-ring.

- Check that all o-rings are correctly positioned.

- Fill the engine oil and run the engine to operating temperature.

- Check for oil leaks from the sump or oil cooler and install the splash shield under the engine.

Remove oil dipstick and pipe

To remove the oil dipstick and pipe from a 1998 Volvo S70, you will need to locate the bolt that holds the pipe in place. This bolt is found underneath the intake manifold. It is a 10mm or 12mm bolt, and you may need a short ratchet or a 24" extension on a socket, along with a flex/swivel head, to reach it.

Once you have located the bolt, place a catch pan underneath the dipstick to collect any oil that may leak out. Then, use a pair of vice grips to pull the dipstick out of the block. The pipe can then be pulled out; it should just slide out, but you may need to wiggle it a little. Before removing the pipe, clean the joint at the bottom first to ensure that any grime does not fall into the crankcase.

When you come to replace the pipe and dipstick, make sure to use a new o-ring at the bottom of the tube.

Drain oil and remove oil filter

Before you begin, make sure you have the right tools and safety equipment. You will need ramps, a bottle jack, a small pry-bar or similar tool, razor blades, lots of rags/old blankets/paper towels, gloves, eye protection, and several cans of liquid gasket remover/simple green/brake cleaner/chemtool B12.

Now, place your Volvo on ramps and put plenty of rags/blankets under the car to catch the oil that will be dripping throughout the procedure.

First, drain the oil and remove the oil filter. You will also need to open the oil fill port on the top of the engine and remove the dipstick from the tube. You can let the oil drain overnight.

Next, remove the oil dipstick tube by undoing the 12mm bolt on the intake manifold and pulling the tube straight out.

Now, you will need to remove the four bolts holding the oil cooler to the oil pan. Use Torx screws to do this. You may get up to a quart of extra oil from this, so use large zip ties to secure the oil cooler to the rear of the car.

Tips

• When cleaning the oil pan, let it soak in a tube of Simple Green for 10 minutes while you attack it with a scrub sponge.
• When replacing the o-rings, dab the back side in a little Vaseline to help them stay put.

Release oil cooler from the sump

To release the oil cooler from the sump, follow these steps:

Firstly, remove the oil dipstick and its pipe, as well as the splashguard from under the engine. Next, drain the oil and remove the oil filter. Now, release the oil cooler from the sump and hang it up at the rear. Remove the screw from the bracket for the fuel line.

To remove the oil sump (oil pan), slacken off all the screws holding it in place. Remove all the screws except for four. It is recommended that the four screws in the corners of the sump are left in place. Carefully tap the sump with a rubber mallet until the joint and its liquid gasket are released. Remove the remaining screws and the sump.

This process is the same for the 1998-2000 Volvo S70, as well as the 1993 Volvo 850, the 2008 Volvo S60 2.5T, and other Volvo models.

Remove screws from the bracket for the fuel line

To remove the screws from the bracket for the fuel line when removing the oil pan of a 98 Volvo S70, follow these steps:

First, locate the bracket for the fuel line. This is usually found near the oil sump or oil pan. Once you have located the bracket, identify the screws that are holding it in place. There may be two or more screws, depending on the specific configuration of your Volvo S70.

Now, to remove the screws, you will need the appropriate tools, typically a screwdriver or a ratchet with the correct bit or socket size. Ensure you have a firm grip on the screwdriver or ratchet to avoid slipping and potentially damaging surrounding components. Turn the screws in a counter-clockwise direction to loosen and remove them. If the screws are tightly fastened, you may need to apply some force, but be careful not to strip the screw heads. Place the removed screws in a safe place to avoid misplacing them.

With the screws removed, you can now carefully lift or move the bracket away from the fuel line. It is important to handle this component with care to avoid causing any damage. Once the bracket is removed, set it aside, ensuring it is placed in a secure location where it will not be accidentally knocked or damaged.

At this point, you should now have better access to the oil pan. Proceed with caution as there may be other components or connections nearby that you need to be mindful of. Continue with the oil pan removal process as outlined in the Volvo instructions or a trusted repair guide. Remember to work safely and, if needed, seek assistance from a qualified mechanic or someone with experience working on Volvo vehicles.

Clean gasket surfaces on the oil sump and cylinder block

To clean the gasket surfaces on the oil sump and cylinder block of your 1998 Volvo S70, you will need to be very careful not to scratch or damage the surfaces. Any damage to the surfaces may result in a poor seal when the new gasket is installed, leading to potential oil leaks.

Firstly, you should remove as much of the old gasket residue as possible. You can use a plastic scraper to carefully chip away at the residue, being careful not to scratch the metal surfaces. You can also use a razor blade, but be extremely cautious as these can easily gouge the soft aluminium. Alternatively, you can use a 3M Bristle Disc attached to a rotary tool, which will cut through the gasket residue without damaging the metal. However, be aware that the green discs are not recommended for aluminium and can cause depressions if too much force is applied.

Once most of the residue is removed, you can use a chemical gasket remover to dissolve any remaining bits. These compounds are very strong, so be sure to wear protective gloves and work in a well-ventilated area. You can also use a solvent like paint thinner to help loosen the remnants. Be sure to protect the cylinders, valves, and other components from the chemicals by covering them with rags.

Frequently asked questions