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AC 720 Filters?
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NC Bruce View Drop Down
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Joined: 15 Sep 2009
Location: Mill Spring, NC
Points: 219 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NC Bruce Quote  Post ReplyReply Direct Link To This Post Topic: AC 720 Filters?
    Posted: 31 Aug 2014 at 10:34pm
After my mechanic worked on the AC 720 for about 8 weeks, we finally got it running and almost lifting an ARK 600 front-end loader, until another dry-rotted hyd. pipe ruptured! Among other things, we had replaced the starter-switch, rebuilt the starter, but couldn't get starter to even try turning. Finally wired in a relay switch to give continuous 12v to starter, and it worked!

1st) Does anyone have the Oil Filter types and numbers for the Onan 19.5hp? ( Car Quest ..... )

2nd) How about the types / numbers of Hydraulic Oil Filter? (NAPA....)?

3rd) My mechanic said to use 10W-40 multigrade oil in the AC 720 Onan Engine? I was always made to use straight 30 like Rotella T 30W (with zinc additive)? What do you say?
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rtxdoug View Drop Down
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Joined: 14 Nov 2013
Location: Souther Ontario
Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rtxdoug Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2014 at 6:58am
FROM OWNERS MANUAL:  Engine Oil Filter Element AC number 2067272, suppliers should have cross reference. Hydraulic system oil filter 1650954. Engine Oil for above 90 degrees F use SAE 50, above 30 F use SAE 30, below 30 degrees F use 5W30. Nice tractor, I would like one. Doug in Ontario.
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Toscani NE SD View Drop Down
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Joined: 21 Jan 2011
Location: Milbank S.D.
Points: 369 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Toscani NE SD Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2014 at 7:57pm
I use only rotella 30wht in my 620 and 720 I use pure one filters on engine and hydro,i don't hav numbers off hand
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OPRCzar View Drop Down
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Joined: 31 Aug 2014
Location: United States
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote OPRCzar Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2014 at 8:11pm
Purolator Numbers
Oil filter  L20195   
Hyd Filter L14670 
The  Onan manual calls for these grades
Below 0 - SAE 5W30
Below 32 - SAE 5W30 or 10W40
Above 32 - SAE 30


Hope this helps
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DON G View Drop Down
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Joined: 14 Feb 2014
Location: Lowpoint, IL
Points: 407 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DON G Quote  Post ReplyReply Direct Link To This Post Posted: 03 Sep 2014 at 8:35pm
Good to see you got it together Bruce.
Seems like I saw the loader before.
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