D1105 timing issue.

Sgraf3

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D1105
Mar 27, 2017
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Swanton Ohio
I rebuilt a 2007 toro groundsmaster 328 d mower with a d1105 in it because it had a bad rod so everything was done new rods and complete rebuild. Set timing off the manual and it's sucking air in the exhaust and blowing out the intake. Any help would be great before I pull it all apart again.
 

85Hokie

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I rebuilt a 2007 toro groundsmaster 328 d mower with a d1105 in it because it had a bad rod so everything was done new rods and complete rebuild. Set timing off the manual and it's sucking air in the exhaust and blowing out the intake. Any help would be great before I pull it all apart again.
Sounds as if you are 180 degrees out of mechanical timing
 

100 td

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Any chance that you dropped/lost/knocked out a key from either shaft when reassembling, and now the gear has spun on the shaft?
 

Sgraf3

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D1105
Mar 27, 2017
6
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0
Swanton Ohio
The gears were not pulled other than the crank. I went off the pictures in the rebuild manual that shows timing marks and it lined up perfectly. All the valves are moving freely the only timing mark that didn't show up exactly like the manual was the dot on the crank itself.
 

Ortimber

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Sep 27, 2016
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Just take the valve cover off and you can see what the valves are doing.


Sent from my iPhone using Tapatalk
 

100 td

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.....the only timing mark that didn't show up exactly like the manual was the dot on the crank itself.
It sounds like you may need to go back and have a closer look at the timing marks on the crank.
 

100 td

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B21TLB (B21, TL421 & BT751) Toyota SDK4 T116 Bobcat
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If the valves aren't riding, one other thought, perhaps there was enough relief on the crank gear that allowed you to install it backwards so the timing mark is on the back side of the gear?
 

Sgraf3

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D1105
Mar 27, 2017
6
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Swanton Ohio
When setting the timing gears should the crank be at tdc?i just looked at the crank and the dot on the crank of aligned with the idler gear would be at the bottom of its stroke.
 

North Idaho Wolfman

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The TDC does not matter when you set the timing, because the crank must be in the proper position for all the marks to line up, irregardless to when anything else is in the motor.

Also #1 mistake that some make is to only line up one set of marks and call it good, you must align all three point at the same time.
Make sure tooth mark lines up with notch (between the teeth) mark.

After you align the once any rotation of the motor will make it "look" like it's out of time because the marks only realign after 28 revolutions (or some other odd number) so align it and button it up.

 

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Sgraf3

New member

Equipment
D1105
Mar 27, 2017
6
0
0
Swanton Ohio
Got it going the crank dot that I lined up with with first time was wrong I trying it by flipping the crank 180 and it fired right up. Thanks for the help