03-16-2008, 11:19 AM
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Registered User
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Join Date: Sep 2007
Location: Long Beach,CA
Posts: 57,271
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Quote:
Originally Posted by GRIESL
Can you please describe "catastrophic?" The condition of my VP seems OK, but I don't know if it's ever been rebuilt or replaced. Perhaps that should be added to my todo list. Thanks.
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Boy I had forgotten that I even started this thread. I started the thread as I had read quite a few threads on how the Vacuum Pump had failed and pieces of it fell into the timing chain area and caused the timing chain to fail (even break, the catastrophic part). One of the members Stevo believed the Vacuum Pump failure was caused in his case by the IP pump Timer (this is the unit that drives the IP and advances the timing on the IP). He said his had too much end play (moved back and fourth too much).
Because of all of this I decided to pull off my Vacuum Pump and take a look. After removal a visual inspection I could not see any thing that looked like it was badly worn or ready to fall apart and I put it back on. (I was inspection the arm, linkage and roller that drives the vacuum pump piston; this is the part that is inside the engine.)
If something goes wrong on the other end of the pump the part with the valves in it the pump will just stop producing vacuum and you will loose your power brakes and will not be able to shutoff the engine (you will have to open the hood and push the manual shutoff by the valve cover).
The pump is not hard to get off; I did have to loosen the Power Steering Pump and remove the belt from the Power Steering Pulley in order to get the V Pump off.
I will PM you some additional information.
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84 300D, 82 Volvo 244Gl Diesel
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