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02-24-2013, 04:18 PM
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#1
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
Posts: 1,261
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A/C roof gasket replacement (with pics)
OK.. so it was sunny and in the mid 60's today so I decide to go ahead and tackle the replacement of my A/C Coleman mach roof gasket. I wanted to document my repairs in hopes of showing others that this is infact a DIY job if you are able (and not scared) to get up on the roof. This job total took me about 2.5 hrs from start to finish, taking my time and the total cost for this repair was$25 for the gasket from the local Camping World. If you recall this thread http://www.jaycoowners.com/showthrea...fridge-amp-AC) which led to to discover my A/C gasket had failed during a camping trip in mid summer last year. OK, here we go..
Typical Coleman Mach roof top A/C unit (why do these fins break off so easy?? )
I removed the filter cover (two black plastic quick release screws) then the 4 spring loaded screws to start the shroud removal.
there is one of these retaining clips on each side that need to be removed along with the three phillips screws on the duct.
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02-24-2013, 04:19 PM
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#2
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
Posts: 1,261
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now the shroud can be dropped and you will find the wiring harness as well as the AC mounting bolts
unclip the harness and disconnect the AC power wires.
I then started on removing the A/C mounting bolts (the ones that tend to work loose) with a ratchet.
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02-24-2013, 04:20 PM
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#3
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
Posts: 1,261
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I then took a good look and relized how long these bolts really were so I upgraded to my shiny new Dewalt
with the 4 bolts removed the mounting bracket can be removed and put to the side.
To the roof now... I was advised by the guy at Camping World to use a blanket and plywood to set the A?C unit on to avoid tearing the rubber roof. Trust me there are some sharp edges/corners on this thing.
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02-24-2013, 04:21 PM
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#4
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
Posts: 1,261
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next remove the 4 screws on top of the plastic cover to remove and set aside.
YUMMMY!
I took a tub of warm soapy water mixed with Simple Green to clean/prep for the the gasket then towel dried the area.
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02-24-2013, 04:23 PM
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#5
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
Posts: 1,261
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OK next I removed the old gassket and could clearly see several reasons it had failed ( I believe it was doomed from the initial install at the factory )
I found some creases in the seal along with these 4 hard rubber 90 degree alignment spacers one on each side of the gasket to aid in the install from the factory. One of them had gotten caught under the seal and had flattened out (no bueno) thuse causing a gap in unit to gasket seal.
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02-24-2013, 04:24 PM
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#6
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
Posts: 1,261
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02-24-2013, 04:25 PM
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#7
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
Posts: 1,261
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02-24-2013, 04:26 PM
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#8
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
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I reattatched the harness and the AC power cord to the shroud then installed. I found due to the addl thickness of the seal the three duct screws were now too short. I used some 1" screws of the same diameter to attatch then installed the two tab brackets (one on each side)
Finally installed the filter cover and called it done. Cheers!
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02-24-2013, 04:39 PM
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#9
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Senior Member
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
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Thanks. This was very heplful.
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Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
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02-24-2013, 04:39 PM
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#10
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Senior Member
Join Date: Sep 2011
Location: Luray, VA (central Shenandoah Valley of VA)
Posts: 1,430
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Nice job, exjay1 ! Very informative, and great pics, too. You make it look simple and straight forward.
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Bill, Gayle, Teddy (Jack Russell terrier), and Honey (Beagle)
Retired at last !
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02-24-2013, 04:55 PM
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#11
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Senior Member
Join Date: Jul 2011
Location: Iowa
Posts: 406
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Excellent job of documenting that, VERY helpful.
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2013 Starcraft Travel Star 229TB
2011 Jayco X17Z(traded in)
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02-24-2013, 04:56 PM
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#12
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Senior Member
Join Date: Jul 2012
Location: Greenville SC
Posts: 843
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Looks like a great job on the install exjay! The pictures and procedure are well taken and documented. Overall a great job all the way around.
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02-24-2013, 05:03 PM
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#13
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Senior Member
Join Date: May 2012
Location: Minnesota
Posts: 9,770
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Very nice! I like the electrical tape on the wire nuts. I also do that when I install outlets.
Thank you,
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02-24-2013, 05:06 PM
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#14
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
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Yep, tape is just some added insurance.
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02-24-2013, 05:08 PM
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#15
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Senior Member
Join Date: May 2012
Location: Boston
Posts: 664
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A/C roof gasket replacement (with pics)
Nice write up. Thanks exjay!! How often would you say you should replace the gasket?
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2013 White Hawk 28 DSBH
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02-24-2013, 05:35 PM
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#16
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Senior Member
Join Date: Feb 2012
Location: Friendswood
Posts: 917
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A/C roof gasket replacement (with pics)
Good write up and pics!!!
Thanks for taking the time!!!
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02-24-2013, 05:53 PM
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#17
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Senior Member
Join Date: Feb 2012
Location: Myrtle Beach, SC
Posts: 1,261
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No problem. The only reason I changed mine was due to a leak and its a '05 model. Not sure how often to change it out as a maint item but just be sure to check the mounting bolts every season to ensure they havent worked loose over time.
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02-24-2013, 06:42 PM
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#18
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Senior Member
Join Date: Sep 2012
Location: Greater Detroit area
Posts: 146
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will definetly remember this Thanks
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02-24-2013, 06:52 PM
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#19
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Site Team
Join Date: Nov 2010
Location: Virginia`s Eastern Shore
Posts: 17,092
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Nice write up! I will have to bookmark this thread in case a how to question arises in the future!
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2017 Coachmen Catalina 283RKS
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02-24-2013, 07:02 PM
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#20
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Moderator Emeritus
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Location: Michigan
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X2
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