D-17 Rock Shaft Arms and Spark Plug Question
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=26030
Printed Date: 31 Oct 2025 at 4:39pm
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Topic: D-17 Rock Shaft Arms and Spark Plug Question
Posted By: CORY
Subject: D-17 Rock Shaft Arms and Spark Plug Question
Date Posted: 20 Feb 2011 at 6:10pm
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Was there some kind of snap ring to hold the rock shaft arms in place on the D-17? A tractor I purchased a year ago had them turned down one notch and it wouldn't lift the implement but about 2 inches off the ground. Got them back up today to where they are supposed to be but there wasn't anything to hold them in. Should there be? Also does anyone know what is the best Autolite plug for the long reach heads on D-17's? I have it written down somewhere but cant find it.
Thanks
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Replies:
Posted By: DSeries4
Date Posted: 20 Feb 2011 at 10:05pm
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Autolite 295s are the plug you want, and yes a snap ring is used to hold the lift arm in place. ------------- '49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080 |
Posted By: Brian G. NY
Date Posted: 21 Feb 2011 at 9:58am
| There should be a snap ring on both sides of each lift arm; total of four. |
Posted By: mlpankey
Date Posted: 21 Feb 2011 at 10:36am
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I think the last 295 autoliltes I bought were 3/8 reach. I like ngk b4 es they are 3/4 reach. ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: Clay
Date Posted: 21 Feb 2011 at 1:21pm
| check ebay. Sometimes you can find some new old stock AC 45XL spark plugs. |
Posted By: HagerAC
Date Posted: 21 Feb 2011 at 4:39pm
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I like the autolite 303 plugs, they last forever, not sure on the reach on them. ------------- 30+ A-Cs ranging from a 1928 20-35, to a 1984 8070FWA, Gleaner R52 |
Posted By: Creek Jenkins
Date Posted: 21 Feb 2011 at 4:49pm
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I get cornfused - when did the D17 switch from short to the long plugs or was it vice versa. Everytime I try to finger out which one I have I get a headache.........I have a '58 or '59 series I, so I think it should have the short plugs, right?
cheers,
Creek
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Posted By: D17 owner
Date Posted: 21 Feb 2011 at 6:45pm
| I just had my lift arm off last week I had no snap rings there was just a roll pin inside. I dont know about the snap rings. Is this only on newer 17's ? Mine is a 61. |
Posted By: mlpankey
Date Posted: 21 Feb 2011 at 7:07pm
I run long reach in both of these heads the 3 inch to 4inch heads .
  ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: D17 owner
Date Posted: 21 Feb 2011 at 7:11pm
| Never mind my last post I just thought of what he was talking about. Just the arms themself. I was thinking of the shaft that the arm slids on to. Eric |