Cooling thermostat ??
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vwbill
- Posts: 970
- Joined: Sat Feb 15, 2003 12:01 am
Cooling thermostat ??
Hey has anyone thought about the thermostat that controls the cooling warm up flaps? So in the bentley for the bus it says it should be 46mm expanded but what is the starting measurement? So basically the travel of the cable and thermostat. What about a screw type method of travel or is it just easier to get a used one at a yard? SHould the rod spring be removed? bill
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albert
- Posts: 834
- Joined: Mon Mar 22, 2004 2:08 pm
cooling thermostat
hi, bill, i you want to pay ,,,65.$ for original or 35.$ for replacement , i know a place for to buy , and if you buy new take the model for 180dr.f. if my mémory is good , the parts no. finish by 165c i thing , and for to know if it is good or not , reemoove the thermostat and put in your home freezer for 2o minutes and afther you put in your home oven at 300dr.f. for 20m. and you mesure the distance , minimumm and maximum lenth ,, if he d,t moove it is good for garbadge ,,, alb.
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albert
- Posts: 834
- Joined: Mon Mar 22, 2004 2:08 pm
cooling thermostat
hi, bill , i am happy , if my info, geeve you satisfaction, send on the forum if you want ,alb.
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mrbaja
- Posts: 436
- Joined: Mon Oct 08, 2001 1:01 am
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raygreenwood
- Posts: 11912
- Joined: Wed Jan 22, 2003 12:01 am
There is no real preload setting...but its not hard to get the hang of.
If you are still using teh stock cast aluminum cooling shroud...VW made teh adjustment quite easy on this cable.....and it took me years to notice it.
First thing. The engine should be stone cold and the thermostat bellows must be contracted. Check the measurement with the book to be sure.
Thread the cable up through the shroud.
Make sure teh spring is installed on the cross shaft correctly....and that the little spring hold down plate is installed under the screw.
NOTE: Bear in mind that the spring is designed to hold the flaps open. When cold, teh bellows holds them closed. So when the spring is installed correctly...the little lever with the locking screw pops toward the back of the car.
Here is the neat part. Push teh lever toward the front of the car until it stops moving....that is flaps closed. You can feel the spring tension. Now hold it there. Put your eyes on the cross shaft bar....follow it with your eyes....toward the distributor to your left. You will come to an area of the cross shaft that has a "cranked" portion in it. Take a large plat screwdriver....a crescent wrench....or a piece of wood....and wedge it between teh cranked area and the cooling manifold casting. The flap bar will now stay in the closed position while you use both hands to put moderate tension on the cable...and tighten the clamp screw.
The object is ...to not stretch teh bellows more than about 2mm. Also....likewise....when you pull the wedge out....the arm where the cable is clamped should not pull toward the rear...more than 2-3mm. Ray
If you are still using teh stock cast aluminum cooling shroud...VW made teh adjustment quite easy on this cable.....and it took me years to notice it.
First thing. The engine should be stone cold and the thermostat bellows must be contracted. Check the measurement with the book to be sure.
Thread the cable up through the shroud.
Make sure teh spring is installed on the cross shaft correctly....and that the little spring hold down plate is installed under the screw.
NOTE: Bear in mind that the spring is designed to hold the flaps open. When cold, teh bellows holds them closed. So when the spring is installed correctly...the little lever with the locking screw pops toward the back of the car.
Here is the neat part. Push teh lever toward the front of the car until it stops moving....that is flaps closed. You can feel the spring tension. Now hold it there. Put your eyes on the cross shaft bar....follow it with your eyes....toward the distributor to your left. You will come to an area of the cross shaft that has a "cranked" portion in it. Take a large plat screwdriver....a crescent wrench....or a piece of wood....and wedge it between teh cranked area and the cooling manifold casting. The flap bar will now stay in the closed position while you use both hands to put moderate tension on the cable...and tighten the clamp screw.
The object is ...to not stretch teh bellows more than about 2mm. Also....likewise....when you pull the wedge out....the arm where the cable is clamped should not pull toward the rear...more than 2-3mm. Ray
