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Pelican Technical Article:

Radiator Replacement

Nick Czerula

Time:

2 hours2 hrs

Tab:

$350

Talent:

***

Tools:

T25 Torx driver, 10, 13mm sockets, flathead screwdriver, floor jack, jack stands, wheel chocks, safety glasses, torque wrench, drain pan

Applicable Models:

Volvo V70 (1998-01)
Volvo V70 2.4T (2001)
Volvo V70 AWD (1998-99)
Volvo V70 GLT (1998-00)
Volvo V70 GLT SE (2000)
Volvo V70 R (1998)
Volvo V70 R AWD (1999-00)
Volvo V70 T5 (1998-01)
Volvo V70 X/C (2001)
Volvo V70 X/C AWD (1998-00)
Volvo V70 X/C AWD SE (2000)

Parts Required:

Radiator, coolant reservoir vent hose

Hot Tip:

Work with a cool engine

Performance Gain:

Proper engine cooling

Complementary Modification:

Inspect or replace coolant hoses

Automobile radiators are made out of a core of linked narrow passages connected via two side tanks. The core is metal and made of stacked layers, pressed and soldered together to form channels. Traditionally, radiators were made of brass or copper cores and attached to brass side tanks. Radiators in today's vehicles are made of aluminum cores attached to plastic side tanks. This keeps cost down and saves weight.

In automobiles with a liquid-cooled engine, a radiator is connected to passages in the engine where liquid coolant is pumped through via a water pump. This liquid is a mixture of water and glycol (to prevent freezing).

The radiator cools the engine by transferring the heat from the fluid inside the engine to the outside air. Radiators are also used to cool transmission and power steering fluids.

When a radiator begins to fail, you'll notice that the car tends to overheat at high engine speed, such as driving on the highway. When you accelerate, the engine temperature will rise. When you idle the engine it will return to normal range. Now, this is not always indicative of a failing radiator, but a good starting point. Of course, there are also leaks that occur at the side tanks of the radiator. The plastic side tanks can crack, causing major loss of engine coolant. You will have to remove the electric cooling fan to replace the radiator. These cooling fans are troublesome. I would suggest replacing it while you have it out. Inspect both radiator hoses and replace them if necessary.

In this article, I'll go over the steps involved with replacing the radiator on the V70's built from 1998: 2001 that have manual transmissions and normally aspirated engines. Be sure to work with a cool engine and confirm that the cooling system lacks pressure before opening the cooling system. On turbocharged models, the intercooler has to be removed before replacing the radiator.

Remember that your car may have been serviced before and had parts replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches.

Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability.

Our vehicle may vary slightly from yours as models do change and evolve, as they grow older. If something seems different, let us know and share your info to help other users. Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

Lift and support the front of your vehicle.
Figure 1

Lift and support the front of your vehicle. Then remove the two 10mm splash shield fasteners (green arrows).

Press the plastic clip (green arrow) through the radiator support.
Figure 2

Press the plastic clip (green arrow) through the radiator support. Then remove the splash shield from the vehicle (red arrow).

Drain the cooling system.
Figure 3

Drain the cooling system. See our tech article on cooling system draining and filling. Loosen the 13mm drain (red arrow) and allow the coolant to drain completely.

Working at the E-box, pull off the vent duct (red arrow).
Figure 4

Working at the E-box, pull off the vent duct (red arrow). Then pull it out of the cooling fan cowl and remove it.

Remove the coolant reservoir vent hose from the radiator (green arrows).
Figure 5

Remove the coolant reservoir vent hose from the radiator (green arrows). Unclip the clamp and pull it straight off to remove it. Loosen both upper radiator hose clamps (red arrows). Then remove the radiator hose from the engine and radiator.

Working at the cooling fan relay mount, slide the solenoid and relay (red arrows) out of the mount.
Figure 6

Working at the cooling fan relay mount, slide the solenoid and relay (red arrows) out of the mount.

Next, remove the two T25 Torx fasteners (green arrows).
Figure 7

Next, remove the two T25 Torx fasteners (green arrows).

Then lift the relay mount up and lay it aside.
Figure 8

Then lift the relay mount up and lay it aside. You can leave the relays attached to it.

Pull the fresh air duct (red arrow) out of the radiator support and remove it from the intake air housing.
Figure 9

Pull the fresh air duct (red arrow) out of the radiator support and remove it from the intake air housing. Lay it aside.

Working at the right side of the radiator, remove the 8mm fan shroud fastener (red arrow).
Figure 10

Working at the right side of the radiator, remove the 8mm fan shroud fastener (red arrow).

Working at the left side of the radiator, remove the 8mm fan shroud fastener (red arrow).
Figure 11

Working at the left side of the radiator, remove the 8mm fan shroud fastener (red arrow).

Lift the fan shroud up to remove it from the radiator.
Figure 12

Lift the fan shroud up to remove it from the radiator. Then rest it against the intake manifold.

Working at the bottom right of the radiator, confirm the cooling fan shroud tabs (red arrow) are detached from the bottom of the radiator.
Figure 13

Working at the bottom right of the radiator, confirm the cooling fan shroud tabs (red arrow) are detached from the bottom of the radiator. The photo shows the tab still installed. The shroud had to be lifted again to detach it from the radiator. Once detached, remove the 13mm A/C condenser fastener (green arrow). Then, remove the 13mm radiator fastener (yellow arrow).

Working at the bottom left of the radiator, loosen the hose clamp (green arrow) and remove the lower radiator hose (inset).
Figure 14

Working at the bottom left of the radiator, loosen the hose clamp (green arrow) and remove the lower radiator hose (inset). Once the hose is removed, remove the 13mm A/C condenser fastener (yellow arrow). Then, remove the 13mm radiator fastener (red arrow). Support the radiator as you remove the final fastener.

To the remove radiator, pull it down and out of the radiator support (green arrow).
Figure 15

To the remove radiator, pull it down and out of the radiator support (green arrow). Hold the fan shroud 9red arrow) out of the way as you lower it.

Install the new radiator into the engine compartment and install the fasteners.
Figure 16

Install the new radiator into the engine compartment and install the fasteners. Install the fan shroud. Be sure both tabs (red arrows) are properly engaged with the slots in the radiator. Once it is installed properly, reassemble the hoses and the fan relay mounts and ducting. Then fill and bleed the cooling system. Run the engine and double check for coolant leaks. 

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Comments and Suggestions:
grendel Comments: just a couple of things to add,on my 1999 V70 manual with a/c, the a/c condenser fasteners on mine were 10mm and there were 4 one on each corner see photo with red circles and the two 13mm radiator bolts have 12mm heads, and on mine 2 brackets are fixed onto the other ends of the bolts with 13mm nuts, remove these first or like me you will shear the bolts, the bolts do thread into the support, so the nuts just hold the brackets after.
to remove the top two a/c condenser bolts you need to move the assembly sideways to get a clear run at the bolts. I dropped the bottom right corner down until I had a clear shot at the left bolt, and got the other underneath.
March 15, 2016
  Followup from the Pelican Staff: Thanks for the additional info and feedback. We appreciate it.
- Nick at Pelican Parts
 

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Page last updated: Sun 2/26/2017 02:49:20 AM