MACKTRUCKS4 Posted March 12, 2014 Share Posted March 12, 2014 I've seen people change the heater covers over to the RD style only because new superliner covers are not available. My question is can you just change the cover or do you have to change the whole heater box? Quote Live every day like it's your last, because one of these days, it will be. Link to comment Share on other sites More sharing options...
bobo Posted March 13, 2014 Share Posted March 13, 2014 show pics of what your talking about? old style with round dials? bobo Quote Link to comment Share on other sites More sharing options...
MACKTRUCKS4 Posted March 15, 2014 Author Share Posted March 15, 2014 The round vents are on the superliner , the other is on my 94 RD Quote Live every day like it's your last, because one of these days, it will be. Link to comment Share on other sites More sharing options...
genco Posted March 15, 2014 Share Posted March 15, 2014 the picture of the square vents is what are on both my 88 and 89 superliners Quote Link to comment Share on other sites More sharing options...
gearhead204 Posted March 15, 2014 Share Posted March 15, 2014 the picture of the square vents is what are on both my 88 and 89 superliners DITTO MY 89 HAS THE RECTANGULAR VENTS TOO Quote Link to comment Share on other sites More sharing options...
fullfuel01 Posted March 15, 2014 Share Posted March 15, 2014 You should clean your carpet. 1 1 Quote Link to comment Share on other sites More sharing options...
Timothy Maikshilo Posted March 15, 2014 Share Posted March 15, 2014 You should clean your carpet.Hey Boss, You have attention to detail Quote Link to comment Share on other sites More sharing options...
85snowdog Posted March 15, 2014 Share Posted March 15, 2014 The picture of the round vents is exactly the same as my 86 RD . Mine has also got cracks, and I was told I couldn't replace it. Quote Keith Link to comment Share on other sites More sharing options...
leversole Posted March 15, 2014 Share Posted March 15, 2014 the picture of the square vents is what are on both my 88 and 89 superlinersDITTO MY 89 HAS THE RECTANGULAR VENTS TOODitto again on my 89 SuperLiner Quote Link to comment Share on other sites More sharing options...
MACKTRUCKS4 Posted March 15, 2014 Author Share Posted March 15, 2014 Ok but do I have to change the heater box to make the cover with the square vent work? Quote Live every day like it's your last, because one of these days, it will be. Link to comment Share on other sites More sharing options...
BAD DOG Posted March 15, 2014 Share Posted March 15, 2014 Mine is registered as an 89 Glider but if you run the VIN at the dealer it's an 85 and it has the rectangular vents. You should be able to get those. The round ones are probably from a pre 85 Superliner 1 series. Quote Link to comment Share on other sites More sharing options...
MACKTRUCKS4 Posted March 15, 2014 Author Share Posted March 15, 2014 I have a 87 and an 88, both have the round vents. Quote Live every day like it's your last, because one of these days, it will be. Link to comment Share on other sites More sharing options...
2stacksuperdog Posted March 15, 2014 Share Posted March 15, 2014 Our 88 has the square ones. Our 84 R has the round ones except in tan Quote Matt Link to comment Share on other sites More sharing options...
gra511 Posted March 16, 2014 Share Posted March 16, 2014 If you log on to Red Dot , a air conditioner manufacter ,they have a mack section that lists replacement parts and part numbers. The only problem ia that you have to buy from a authorized dealer. I have a 1986 superliner and have the round vents. They don't stock the round ones but I have seen the square ones. Quote Link to comment Share on other sites More sharing options...
RSD501 Posted March 16, 2014 Share Posted March 16, 2014 On the subject of superliner A/C, does it ever actually blow cold and hard enough to cool the cab? I replaced the grilldensor, compressor and dryer and the a/c really sucks. It never blows very cold. Any ideas? Quote Link to comment Share on other sites More sharing options...
MACKTRUCKS4 Posted March 16, 2014 Author Share Posted March 16, 2014 To get the best COLD air, you must shut off the valve on the motor that's inline with the heater. I noticed a big difference with cooling. Quote Live every day like it's your last, because one of these days, it will be. Link to comment Share on other sites More sharing options...
2stacksuperdog Posted March 16, 2014 Share Posted March 16, 2014 Looks like you can only get the square style but they do list tan as a option which is good for guys with older trucks Quote Matt Link to comment Share on other sites More sharing options...
RSD501 Posted March 17, 2014 Share Posted March 17, 2014 To get the best COLD air, you must shut off the valve on the motor that's inline with the heater. I noticed a big difference with cooling.I did that, and it would blow cold in the morning before the sun was up. But the a/c just couldnt keep up. I think this spring I will tint the side and back window. I just was disappointed with the results of $1600 in air conditioning parts Quote Link to comment Share on other sites More sharing options...
Dirtymilkman Posted March 17, 2014 Share Posted March 17, 2014 Insulate your cab with dynamat or something like that. It will help keep heat out in summer and cold out in winter. It also quiets down the interior. But make sure you cover all the metal. 1 Quote Link to comment Share on other sites More sharing options...
storkmack Posted March 17, 2014 Share Posted March 17, 2014 I did that, and it would blow cold in the morning before the sun was up. But the a/c just couldnt keep up. I think this spring I will tint the side and back window. I just was disappointed with the results of $1600 in air conditioning partsThe RD I used to run would freeze you out. But, if the drain out the front was restricted, I wouldn't work very well. Might want to check that. Quote Link to comment Share on other sites More sharing options...
xdudebrahx Posted March 20, 2014 Share Posted March 20, 2014 If you want to smash your knee into it every day, change it over. I'm 6'3" though, don't know if you'll have the same legroom problem though. Quote Link to comment Share on other sites More sharing options...
philgaudet82 Posted March 25, 2014 Share Posted March 25, 2014 If you want to change over to the square style you should change all the heater. But the Red Dot and the Mack (round vent) heater bolts at the exact same place and plug to the truck harness with the same connectorEnvoyé de mon iPhone à l'aide de Tapatalk Quote Link to comment Share on other sites More sharing options...
David Bidelspach Posted June 17, 2019 Share Posted June 17, 2019 On 3/14/2014 at 9:07 PM, MACKTRUCKS4 said: The round vents are on the superliner , the other is on my 94 RD 1986 Mack RW613 Superliner. I am looking for a New or Used Air Conditioning Cover with the three (3) Round Hole Vents. Any idea, where I can find such? Quote Link to comment Share on other sites More sharing options...
jackdk Posted August 4, 2019 Share Posted August 4, 2019 My 85 RW633 Superliner has the square vents. Quote Link to comment Share on other sites More sharing options...
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