Volvo Parts Catalog Volvo Accessories Catalog Volvo Technical Articles Volvo Tech Forums
 
  Search our site:    
View Recent Cars  |   Cart  | Project List | Order Status | Help    
 >  >
Timing Belt and Water Pump Replacement
 
Bookmark and Share

Pelican Technical Article:

Timing Belt and Water Pump Replacement

Nick Czerula

Time:

4 hours4 hrs

Tab:

$500

Talent:

*****

Tools:

10, 13, 14mm socket, 6mm Allen wrench, jack and jack stands, wheel chocks, safety glasses, torque wrench, large 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:

Water pump, timing belt, pulley, tensioner

Hot Tip:

Work with a cool engine

Performance Gain:

Proper engine timing

Complementary Modification:

Replace drive belt

Volvo V70 models utilize a toothed engine-timing belt. This belt connects the crankshaft and camshaft pulley to synchronize engine mechanical timing. It runs around one idler pulley, the water pump and a tensioner. The timing belt is manufactured from a strong rubber allowing flexibility and some fluid contamination resistance. If you have a major oil or coolant leak contaminating the timing belt, I would still suggest replacing the belt, regardless of the construction.

You should replace the timing belt and pulleys every 60,000 miles. This prevents timing belt failure and engine damage. If the engine is out of time, the pistons may come in contact with the valves causing major engine damage. This is known as an interference engine.

The water pump is driven by the timing belt and should be replaced each time the timing belt is replaced. The water (coolant) pump is bolted to the side of the engine block sealed with a paper gasket.

When a coolant pump begins to fail, you'll notice that the car tends to overheat at low engine speed, such as sitting at a stoplight. When you accelerate, the engine temperature will drop. Now, this is not always indicative of a coolant pump failure, but a good starting point. You may also want to try squeezing the top radiator hose with the engine warmed up and running. You should feel pressure build up on the back of the hose and surge once it is released. If you feel no pressure, it's a fair bet that the coolant pump is failing. The most common problem with the electric coolant pumps is a fault code for coolant pump volume. If you suspect the coolant pump is leaking, check the rear of the engine on the right side. If coolant can be seen there or from the timing cover area, this would indicate a leak.

Keep in mind that when your car was serviced before, parts may have been 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.

Be sure to work with a cool engine and remove the key from the ignition. Jack the front of your vehicle.

First you are going to have to remove the engine cover on the cylinder head.
Figure 1

First you are going to have to remove the engine cover on the cylinder head. Start by removing the two T30 Torx bolts (red arrows). Once the bolts are removed, there are two clips you have to detach.

Once the Torx fasteners have been removed, unclip the timing belt cover retainers.
Figure 2

Once the Torx fasteners have been removed, unclip the timing belt cover retainers. Pull them away from the cover while lifting the cover up.

Once unclipped, lift the timing belt cover up and remove it from the engine.
Figure 3

Once unclipped, lift the timing belt cover up and remove it from the engine.

Pull the hoses (green arrow) out of the mounts.
Figure 4

Pull the hoses (green arrow) out of the mounts.

Working at the right side of the engine compartment, pull the E-box cooling vent hose off and place it out of the way.
Figure 5

Working at the right side of the engine compartment, pull the E-box cooling vent hose off and place it out of the way.

Then pull the power steering hose out of the mounting bracket (green arrow) and place it aside.
Figure 6

Then pull the power steering hose out of the mounting bracket (green arrow) and place it aside.

Unclip and slightly lift the coolant and power steering reservoirs.
Figure 7

Unclip and slightly lift the coolant and power steering reservoirs. Raise them just enough to gain access to the electrical connector for the coolant level sensor.

Then, disconnect the coolant level sensor electrical connector by pressing the release tab (green arrow) and pulling it apart.
Figure 8

Then, disconnect the coolant level sensor electrical connector by pressing the release tab (green arrow) and pulling it apart.

Place the coolant and power steering reservoirs on the engine out of your way.
Figure 9

Place the coolant and power steering reservoirs on the engine out of your way.

Remove the 10mm upper timing cover fastener (red arrow).
Figure 10

Remove the 10mm upper timing cover fastener (red arrow).

Remove the upper timing cover by lifting it straight up (red arrow).
Figure 11

Remove the upper timing cover by lifting it straight up (red arrow).

Remove the drive belt (red arrow).
Figure 12

Remove the drive belt (red arrow). See our tech article on drive belt replacing. Before removing the drive belt, mark the direction of rotation (if reusing belts) and note the installation position. Next, using a 14mm wrench, rotate the belt tensioner clockwise to release the belt tension. With the tension released, pull the belt off the tensioner pulley.

Working in the right front wheel well, remove the 10mm plastic nut.
Figure 13

Working in the right front wheel well, remove the 10mm plastic nut. Then fold the fender liner out of the way. It has a crease to allow easy folding. Next, remove the four 10mm crankshaft pulley bolts (red arrows). Then remove the 30mm crankshaft pulley center bolt (green arrow).

Wiggle the pulley side to side to free it.
Figure 14

Wiggle the pulley side to side to free it. Then remove it from the engine.

Volvo recommends removing the small cover at the bottom of the crankshaft head.
Figure 15

Volvo recommends removing the small cover at the bottom of the crankshaft head. To do this, remove the 10mm fasteners (green arrows). Then remove the cover. I usually leave it installed.

Reinstall the plastic engine cover over the camshaft sprockets.
Figure 16

Reinstall the plastic engine cover over the camshaft sprockets. Be sure it is fully latched and aligned correctly. Reinstall the 30mm crankshaft pulley nut. Then rotate the engine clockwise until the marks on the camshaft pulleys line up with the slots on the upper timing cover (red arrows). Each camshaft sprocket has a small-engraved line. Once aligned this is TDC.

Check that the tab (red arrow) on the crankshaft gear is aligned with the mark on the timing cover.
Figure 17

Check that the tab (red arrow) on the crankshaft gear is aligned with the mark on the timing cover. You can't see this mark on the timing cover from above. It is blocked by the timing belt (green arrow).

This shows the tab on the crankshaft gear (green arrow) when it is aligned with the timing cover mark (red arrow), as seen from below.
Figure 18

This shows the tab on the crankshaft gear (green arrow) when it is aligned with the timing cover mark (red arrow), as seen from below. Make sure these marks are also lined up.

Once the marks are aligned and the engine is at TDC, remove the timing belt tensioner 13mm fastener (red arrow).
Figure 19

Once the marks are aligned and the engine is at TDC, remove the timing belt tensioner 13mm fastener (red arrow). Then remove the tensioner from the engine (inset).

Once the tensioner is removed, remove the timing belt from the engine.
Figure 20

Once the tensioner is removed, remove the timing belt from the engine.

Locate the idler pulley, remove the two 13mm fasteners (green arrows) and remove the idler pulley from the engine.
Figure 21

Locate the idler pulley, remove the two 13mm fasteners (green arrows) and remove the idler pulley from the engine. Install a new idler pulley and tighten the fasteners. Then install the new timing belt tensioner. Leave the tensioner loose so it will rotate but is tight to the engine.

If you're replacing the water pump, remove the seven 10mm fasteners (green arrows).
Figure 22

If you're replacing the water pump, remove the seven 10mm fasteners (green arrows). The photo inset shows the location of all the fasteners.

If you're replacing the water pump, remove the old gasket (green arrow) and clean the engine crankcase to water pump sealing surface.
Figure 23

If you're replacing the water pump, remove the old gasket (green arrow) and clean the engine crankcase to water pump sealing surface. Install the new water pump with the gasket.

Confirm that the crankshaft is still at TDC.
Figure 24

Confirm that the crankshaft is still at TDC. This shows the tab on the crankshaft gear (green arrow) when it is aligned with the timing cover mark (red arrow), as seen from below. Make sure these marks are lined up.

Confirm the camshafts are still at TDC.
Figure 25

Confirm the camshafts are still at TDC. The marks on the camshaft pulleys must line up with the slots on the upper timing cover (red arrows).

With the engine timing marks properly aligned, install the new timing belt to the crankshaft gear, then up and under the idler pulley to the intake camshaft gear, then to the exhaust camshaft gear, water pump and over the tensioner.
Figure 26

With the engine timing marks properly aligned, install the new timing belt to the crankshaft gear, then up and under the idler pulley to the intake camshaft gear, then to the exhaust camshaft gear, water pump and over the tensioner. Confirm the belt is slack free in all areas except near the tensioner. If you have too much slack, engine timing will change when the tensioner is adjusted in the following step. When adjusting, use a 6mm Allen wrench (red arrow) and a 13mm wrench to loosen or tighten the tensioner bolt (green arrow). I use a trimmed 6mm Allen to make it easier to get into the space between the engine and the fender (inset).

Adjust the timing belt tension at about 68°f.
Figure 27

Adjust the timing belt tension at about 68°f. Rotate the 6mm Allen until the indicator (green arrow) is between the guides (blue arrows). Once in between, tighten the 13mm tensioner fastener and recheck. The red arrow shows a belt adjusted at very cold temps -5°f. The yellow arrow shows a belt adjusted at hot temps 120°f. Once you have the timing belt aligned and tensioned, press the belt in at the camshaft pulleys and water pump. The tensioner indicator should move freely back and forth, returning to the center position when released. Rotate the engine two full revolutions. Then check that the camshaft and crankshaft timing marks are all lined up in TDC as they were before you removed the original timing belt. Once you are sure all is timed correctly, double check all fasteners for tightness and reassemble the engine.

Bookmark and Share
Comments and Suggestions:
jackyd Comments: I just finished installing a new timing belt kit on my V70 2.4T. I had a hard time getting the belts to conform to the positions they needed to be. Had I read this article I could have saved a whole lot of time. I finally found the crankshaft marking and thought DUHH. The web page is really great. I used All Data and it does not show the nubs location.
October 9, 2016
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
alex Comments: Wow! this was by far the BEST, most to the point clear and well explained tutorial i have ever had the pleasure of reading. Im not blowing smoke up your ass sir, and thank yu.
October 5, 2016
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
hank Comments: nick, I need some instruction on how to replace timing belt on 5 cyl with vvt on the exhaust cam alone.

Henry
September 16, 2016
  Followup from the Pelican Staff: We don't currently have that tech article. If we get a chance to perform the procedure, we will be sure to document it.

I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
jorge Comments: I just got a 2000 Volvo s80, it does not start I noticed the timing mark on the crank shaft never aligns with the cams, do I need to take the timing belt off and re do it? thanks for the help
June 6, 2016
  Followup from the Pelican Staff: Before you do that, confirm compression is your issue. When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and fuel pressure, volume, quality and engine compression. Are there any fault codes? Once you figure out what is missing, it will be easier to diagnose. - Nick at Pelican Parts  
Roger Comments: I have seen some instructions and videos that use a tool to look the cam gears in place. 2000 Volvo S80 T6. Do carry a specific tool for this ? Or is just triple checking enough?
October 15, 2015
  Followup from the Pelican Staff: There tools available to lock the cams. However, for someone with a bit of experience, not always needed. Give our parts specialists a call at 1-888-280-7799. They can get you the tool. - Nick at Pelican Parts  

  Search our site:    

View Cart & CheckOut | Project List | Order Status |  Help    

 

[Home] [Customer Service] [Shopping Cart] [Project/Wish List]
  [Privacy Statement]  [Contact Us] [About Us] [Shipping] [Careers]

Copyright © Pelican Parts Inc. -    DMCA Registered Agent Contact Page

Page last updated: Sat 12/3/2016 02:51:48 AM