Would replacing gasket on 2 year old water pump...

Post by **xHeart** » 26 Jul 2012, 15:52

... be my second step if the minor drops do not stop after I re torque these 7 bolts?
Timing belt was done Oct 2010. What all I must remove to access these bolts? Would someone point me to the pertinent MVS posts.

Weekend project. TIA.

Post by **misha** » 26 Jul 2012, 17:48

xHeart wrote:... be my second step if the minor drops do not stop after I re torque 7 bolts?

Just in case that the coolant is escaping from a bad seal.If it is escaping from the little shaft,you must replace it soon.

I assume that you have OEM or Hepu water pump installed.They are the ONLY one you would want to have in there.

Post by **jimmy57** » 26 Jul 2012, 18:18

First know where it leaks from. The bolts at 1 o'clock and 2:30 can leak by threads. The bolts can have sealnt applied and fix that without removal of belt.

Post by **xHeart** » 26 Jul 2012, 18:38

jimmy57 wrote:First know where it leaks from. The bolts at 1 o'clock and 2:30 can leak by threads. The bolts can have sealnt applied and fix that without removal of belt.

The location is designed for braille readers. Would a socket set with 1/4 and 3/8 driver sufficient, and what sealant?
Few photos...

: view from below, a drop at a time; MVS_0164.jpg (347.79 KiB) Viewed 1452 times

: corner with antifreeze; MVS_0172.jpg (349.8 KiB) Viewed 1452 times

Yes. it is HEPU.

: HEPU!; MVS_0171.jpg (311.74 KiB) Viewed 1452 times

Post by **jimmy57** » 26 Jul 2012, 19:03

I thought all along we were discussing the 01 XC70. The hydraulic tensioner on the 97 makes this a bit different. If the leak is traced to the bolts then the belt has to come off.
Teflon pipe joint compound/thread sealant would be fine. Loc-Tite makes a teflon bolt sealant but for two bolts it would be more expensive and harder to locate than the ACE/Home Depot/Lowe's/Menard's available plumber's product.

Post by **xHeart** » 26 Jul 2012, 19:15

jimmy57 wrote:The hydraulic tensioner on the 97 makes this a bit different. If the leak is traced to the bolts then the belt has to come off.
Teflon pipe joint compound/thread sealant would be fine. Loc-Tite makes a teflon bolt sealant but for two bolts it would be more expensive and harder to locate than the ACE/Home Depot/Lowe's/Menard's available plumber's product.

'97 850 N/A - I took the TB cover off the other day, it is difficult to size up looking from the above. Would removing the passenger side wheel help?

Post by **misha** » 27 Jul 2012, 14:57

xHeart wrote:...it is difficult to size up looking from the above. Would removing the passenger side wheel help?

Remove the passenger side wheel and bend a plastic shield to reveal crankshaft and all other timing components.

Post by **xHeart** » 28 Jul 2012, 08:32

Ozark Lee wrote:There are a couple of versions of the crankshaft marks. Some have two marks and others have one mark.

There are some pictures in this thread.

https://www.matthewsvolvosite.com/forums ... =1&t=19831

...Lee

Above is quoted from a topic discussing timing belt. Ozark Lee's write up is an excellent starting reference for me to take on the leaking issue near the water pump. My scope of work is limited to water pump, but it looks I will have to do everything before I take the pump off. The markings, alignment, minus putting new parts since the TB job was done by Volvo service 2 years ago.

If so, then, would it make sense to order the water pump kit before taking it all apart?

Post by **xHeart** » 28 Jul 2012, 17:37

The bolts appear dry. However, pressing against the cup with finger draws out antifreeze from its edges. It is hot.

: location of leak; MVS_0190.jpg (368.65 KiB) Viewed 1406 times

A clearer view of drop forming. Would the seal become so weak that the hot antifreeze would start to gushing out at some point?

: here is a drip forming after it is pressed; MVS_0193.jpg (357.91 KiB) Viewed 1406 times

Where do I go from here? The Aisin kit at IPD if $78.

Post by **misha** » 28 Jul 2012, 19:23

With that minor drops and with last replacement 2 years ago...i would let it there for next timing belt replacement and i would keep en eye to coolant level.In fact...you don't need to keep en eye to coolant level because you have low coolant light.

Seriously...if the pump is not making noise and don't have a play in the shaft,with that minor leak...i would leave it in there for next timing belt replacement IF leaking is not getting worse.