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waw1962 
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Joined: 11 May 2024
Location: PA
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 Topic: D17 valve adjustment
Posted: 15 Jul 2024 at 10:38am |
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The shop manual for the D17 series IV states to set valves 1,2,4, and 6 when TDC, then 3,5,7 and 8 at 90 degrees rotation of the crankshaft. Others have stated to set them in firing order, 1,2,4 and 3. Which is correct? Thanks.
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DrAllis
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Joined: 12 Sep 2009
Points: 20528
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Posted: 15 Jul 2024 at 11:23am |
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Either way works. Set ALL at .015" COLD which that book will not tell you.
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SteveM C/IL
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8241
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Posted: 16 Jul 2024 at 7:10pm |
 waw1962 wrote:
The shop manual for the D17 series IV states to set valves 1,2,4, and 6 when TDC, then 3,5,7 and 8 at 90 degrees rotation of the crankshaft. Others have stated to set them in firing order, 1,2,4 and 3. Which is correct? Thanks. |
90 degrees doesn't sound right....you better just do each cyl on TDC
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3542
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Posted: 16 Jul 2024 at 11:26pm |
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one full rotation of the crankshaft. two full turns on the crank = one full turn of the cam
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Allis dave
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Joined: 10 May 2012
Location: Northern IN
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Posted: 17 Jul 2024 at 6:49am |
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I haven't done many, but when I set them I just turn it over a few times watching and catch each valve when it's all the way closed. I don't worry about TDC and the firing order. These are pretty easy to do that way becasue duration is so short. They are fully closed most of the time.
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nella(Pa)
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Joined: 11 Sep 2009
Location: Allentown, Pa.
Points: 3102
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Posted: 17 Jul 2024 at 7:01am |
SteveM C/IL wrote:
waw1962 wrote:
The shop manual for the D17 series IV states to set valves 1,2,4, and 6 when TDC, then 3,5,7 and 8 at 90 degrees rotation of the crankshaft. Others have stated to set them in firing order, 1,2,4 and 3. Which is correct? Thanks. |
90 degrees doesn't sound right....you better just do each cyl on TDC |
Take out spark plugs! TDC on compression stroke.
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Macon Rounds
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Joined: 18 Feb 2010
Location: Pittsburgh Pa
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Posted: 17 Jul 2024 at 11:08pm |
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Yep
Intake valve closes you are good to check valve clearance on both...
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The Allis "D" Series Tractors, Gravely Walk behind Tractors, Cowboy Action Shooting !!!!!!! And Checkmate
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Jim.ME
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Joined: 19 Nov 2016
Location: Maine
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Posted: 18 Jul 2024 at 9:15am |
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4 cylinder overhead valve with the rocker cover off, it is pretty simple to watch the companion cylinder for the valves to be "on the rock" (exhaust valve closing and intake opening), to be in the correct place to set the valves on its cylinder with both valves closed, ready to fire. 1 and 4 are companions and 2 and 3 are companions.
Edited by Jim.ME - 18 Jul 2024 at 9:16am
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NEVER green
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Joined: 28 Feb 2013
Location: MN.
Points: 7498
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Posted: 18 Jul 2024 at 9:27am |
Racer's set them the EOIC method, do each cylinder one at a time, as soon as the exhaust opens set the intake, as soon as the intake closes set the exhaust.
I have used it for years.
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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