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Re: Vacuum diagram [message #311226 is a reply to message #311172] Sun, 04 December 2016 00:48 Go to previous messageGo to previous message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma:
Senior Member
From memory, lets see if I can list all of the devices that run on vacuum and their hoses.

1. Power brakes
a. large hose between intake manifold and power brake booster

2. Transmission modulator
a. hose from front of carb to steel line mounted on pass side front of intake manifold
b. hose from steel line on lower rear of engine to transmission modulator

3. Heater / AC control
a. hose from rear intake manifold vacuum port to heater vacuum, reservoir under
driver's side hood.
b. hose from vac reservoir to heater control under the dash.

4. Cruise control
a. hose from brake pedal disconnect switch to the Cruise Control
b. hose from 2 CC ports to front (or rear)intake manifold vacuum port
c. hose from CC to throttle bellows

5. Distributor
a. hose from distributor to TVS
b. hose from TVS to highest port on front of carb
c. hose from TVS to front manifold vacuum port.
d. 1" hose to choke pull off

6. Fuel canister
a. hose from fuel canister to front lower connection on the carb
front of the carb.

7. PCV
a. hose (medium diameter) from PCV valve to lower front of the carb. I had forgotten this one and John made a posting suggesting it be added.

8. Hot air valve on Air Cleaner
a. hose from the rear intake manifold port to the air cleaner. connection.

9. Rear of carb
a. I have been told that there is one short hose from the rear of the carb to the rear intake manifold port.

I did not list all of the vacuum hoses from the heater control to the various doors in the heater/AC system. I do not think you wan to mess with those.

If anyone one sees any errors or omissions please correct the above list.

This ought to get you started.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

[Updated on: Fri, 09 December 2016 20:45]

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