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| AQ125B timing belt trouble |
| Author |
Message |
    
fixit
Visitor
| | Posted on Saturday, April 19, 2008 - 12:49 pm: | 
|
When i first got the boat the timing belt was walking to the outside and it was eating away at the belt. Well i was told the belt was just old so i ordered a new one and put it on there and now the same thing is happening. It is walking out very slowly and all the pulleys are in good shape and there isnt any slack in the idler pulley. Anyone know how to stop it from walking out or where i can get an idler pulley from? |
El Pescador
Senior Member
Username: el_pescador
Post Number: 2985
Registered: 02-2006
| | Posted on Saturday, April 19, 2008 - 01:05 pm: |
|
First, check that the plates 14 and 15 are in place.
http://www.volvopentastore.com/CRANKSHAFT_AND_RELATED_PARTS_AQ125B/dm/cart_id.65 7400424--category_id.333147--list_time.1208624437--session_id.998429625--store_i d.366--view_id.327258
Second, make sure the idler is keeping the right tension. The Seloc manual explains how to install it.
Here is some more information.
http://www.marineengine.com/discus/messages/12487/149926.shtml |
Justin Gibson
Member
Username: justin_gibson
Post Number: 4
Registered: 04-2008
| | Posted on Saturday, May 03, 2008 - 05:23 pm: |
|
el this timing belt is still walking out it has the right tension on it and the plates are in the correct place. Do you think that the idler pulley is bad? it doesnt have any slack in the bearing and it looks like its in good condition? What else could it be? |
El Pescador
Senior Member
Username: el_pescador
Post Number: 3076
Registered: 02-2006
| | Posted on Saturday, May 03, 2008 - 07:39 pm: |
|
Justin, the belt is guided by plates 14+15 at the crankshaft gear
http://www.volvopentastore.com/CRANKSHAFT_AND_RELATED_PARTS_AQ125B/dm/cart_id.657400424--category_id.333147--list_time.1208624437--session_id.998429625--store_id.366--view_id.327258
and the camshaft pulley also has two guide plates
then it is kept under tension by the tension pulley 14 and spring 13.
http://www.volvopentastore.com/BELT_TRANSMISSION/dm/cart_id.657400424--category_id.333147--list_time.1209856907--session_id.115102031--store_id.366--view_id.327304
If it is correctly installed, it should not walk out of the pulleys. An indication of the correct tension is that you can twist the belt about 90ยบ on the longest length between pulleys (right side of the above picture) by grabbing it with your thumb and index fingers. If this is not the case, set the tension pulley correctly. Get the Seloc or Clymer manuals if you are not sure of how to do it. |
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