 Push rod tubes, How to change them............... |
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| lbreen |
 Nov 14 2005, 09:08 PM
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#1
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Newbie  Group: Members Posts: 29 Joined: 15-November 04 From: chicago Member No.: 3,119 Region Association: None  |
This has to sound pretty stupid. How do you change the gaskets on the push rod tubes? Does the whole head have to come off? Do you replace the springs. or the whole tube?Thanks lb
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| Mueller |
Nov 14 2005, 09:11 PM
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#2
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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short version:
jack up car, remove valve covers, remove rocker arm assmeblies, remove push rods, remove push rod tubes, replace O-rings only should take a few hours.... more detailed instructions have been posted before, hopefully someone can post them for you.... oh wait,,,,a six or a four??? above is for a 4 banger...no idea on a six..... |
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| lbreen |
Nov 14 2005, 09:49 PM
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#3
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Newbie Group: Members Posts: 29 Joined: 15-November 04 From: chicago Member No.: 3,119 Region Association: None |
Thank you, It's a four. A few years ago I worked on a vw type 1. Sounds the same. Much appreciated. Thanks again, Larry Breen
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| r_towle |
Nov 14 2005, 09:59 PM
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#4
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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with a type one you need to remove the heads...type 4 the tubes come out of the head through the top of the head..instead of being sandwiched in between the head and the case...much easier..
Rich |
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| Dave_Darling |
Nov 15 2005, 01:08 AM
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#5
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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Remember, you can leave the tube "hanging" from the bore in the cylinder head while you replace the seals.
Do one cylinder at a time, and set that cylinder to TDC before you start on it. Both rocker arms need to have some slack or you'll never get the right torque reading on the rocker shaft retaining nuts. (Ten lb-ft, yes 10.0!) It's a tight space to swing a torque wrench in, but you don't want to overtorque those nuts. It can be a pain getting the pushrods to seat in the cups in the ends of the lifters. Have patience and keep trying! (Or it can be easy, sometimes.) Make sure that the tube retaining spring is against the shoulders of the outer ends of the tubes when you're done. You don't want it sticking up far enough to rub against the pushrod, or you'll wear a notch in the pushrod. Access may be a b*tch, but it is quite doable. --DD |
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| Jeffs9146 |
Nov 15 2005, 01:11 AM
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#6
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Ski Bum Group: Members Posts: 4,062 Joined: 10-January 03 From: Discovery Bay, Ca Member No.: 128 |
6 is even easier!!! No pushrods to deal with! Jeff |
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| IanStott |
Nov 15 2005, 09:20 AM
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#7
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Member Group: Members Posts: 226 Joined: 13-June 04 From: Moncton,New Brunswick,Canada Member No.: 2,199 |
Since I already have my engine out and on a stand I have been thinking about the other pushrod tubes I saw advertised somewhere, collapseable or telescopic I think. What experiences or recommendations do you have?
Ian Stott Moncton Canada PS. Can't work on my car much today as I have to check out my snowblower and get it ready to go!! |
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| Mark Henry |
Nov 15 2005, 09:28 AM
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#8
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
still has drain tubes....same diff (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif) |
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| Mark Henry |
Nov 15 2005, 09:29 AM
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#9
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
(IMG:http://www.914world.com/bbs2/html/emoticons/stromberg.gif) |
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| Allan |
Nov 15 2005, 09:38 AM
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#10
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/stromberg.gif) |
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| Jeffs9146 |
Nov 15 2005, 10:12 AM
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#11
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Ski Bum Group: Members Posts: 4,062 Joined: 10-January 03 From: Discovery Bay, Ca Member No.: 128 |
Not even close. You don't even have to take off the valve covers. 1. Remove exahust 2. Crush and remove old tubes 3. Reinstall with expandable tubes 4. Reinstall exahust Done! Jeff |
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| Mark Henry |
Nov 15 2005, 10:22 AM
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#12
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
damn....it still leaks (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/dead horse.gif) |
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| r_towle |
Nov 15 2005, 10:37 AM
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#13
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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Im just about to do this, the front and rear seals and the oil cooler seals...
I saw on PP site the vitron (sp) seals...which one do you guys use... And, when I did this last time there was mention of using a rtv gasket material in the case also....I honestly cant remember how i did it...but i think that was the deal... Is the goo needed to ensure no leaks...if so, where is that article... Rich |
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| Mark Henry |
Nov 15 2005, 10:47 AM
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#14
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Liquid teflon on the P/R seals...make sure everything clean-clean-clean!
Nothing on the oil cooler seals. clean again. Nothing on the main/nose seals...a bit of grease on the inner lip (seal to crank) for start-up lube |
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| r_towle |
Nov 15 2005, 10:55 AM
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#15
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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liquid tephlon...never hear of it...
I know the rest...it was just I vaguely remember putting something like rtv gasket on the seal where the pr tube is in the case, using my finger to smooth out the built in valley that traps oil in there....it was one of the tech tip things....cant remember and it was before this site.... might have either been PP, but I searched there and could not find it...could have been the AA book on 914 tech tips... Is that needed, done or stupid?? Rich |
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| Mark Henry |
Nov 15 2005, 10:59 AM
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#16
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Permatex...can't remember the number off hand.
Jake's trick...done it many times now, works gud. |
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| r_towle |
Nov 15 2005, 11:00 AM
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#17
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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so that is a yes...finger to make smooth...eliminate the valley??
Rich |
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| Jeffs9146 |
Nov 15 2005, 01:29 PM
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#18
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Ski Bum Group: Members Posts: 4,062 Joined: 10-January 03 From: Discovery Bay, Ca Member No.: 128 |
(IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) |
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