| Vacuum hose routing [message #323118] |
Fri, 01 September 2017 16:02  |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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I know I've seen them but can't seem to find a vacuum hose diagram for the engine on a 1975. Anyone have the information?
Thanks as always. Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: Vacuum hose routing [message #323120 is a reply to message #323118] |
Fri, 01 September 2017 17:04  |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Hal StClair wrote on Fri, 01 September 2017 14:02I know I've seen them but can't seem to find a vacuum hose diagram for the engine on a 1975. Anyone have the information?
Thanks as always. Hal
Hal,
There's one for a '77 on the photo site:
http://www.gmcmhphotos.com/photos/dual-vacuum-distributor/p63297-1977-vacuum-schematic.html
Probably pretty similar.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: Vacuum hose routing [message #323122 is a reply to message #323120] |
Fri, 01 September 2017 17:38 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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Thanks Carl but the 1977 is different than my 1975.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: Vacuum hose routing [message #323126 is a reply to message #323118] |
Fri, 01 September 2017 18:18 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Hal StClair wrote on Fri, 01 September 2017 17:02I know I've seen them but can't seem to find a vacuum hose diagram for the engine on a 1975. Anyone have the information?
Thanks as always. Hal
Hal,
There is isn't much in the manual's section 6T because there isn't much.
Both X7425and X7525 show about the same thing with exception for California.
There are really only three parts.
The distributor advance set shown in 6T - Figures 9 & 10
The intake air stove covered in the early part of 6T
The PCV system gets a little attention at the very beginning of 6T
The single line from the canister to the carburetor base gets an honorable mention in section 8.
Other than that, there is the vacuum sources for the brake booster and the HVAC and those are just more manifold taps.
The 49 state versions are pretty close to pre-EPA rule engines.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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