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Open Roads Forum  >  Tech Issues

 > How many lbs of freon do I need?

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witzman

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Posted: 07/29/10 05:15am Link  |  Print  |  Notify Moderator

Hello everyone. We have a 96' Safari Cont. and are wondering if anyone knows how many lbs of freon the dash air conditioning takes?We havent any manuals, and the tech said he needs to know.. thanks in advance. mary


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Bob Landry

Austin, texas

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Posted: 07/29/10 05:49am Link  |  Print  |  Notify Moderator

If he were a real tech, he would probably look on the manufacturers plate that's usually attached somewhere on the evaporator. Personally, I think i would find another shop. In a pinch, he could charge it until the suction line sweats back to the compressor, watching the pressures on the guages. The properties of refrigerant are the same regardless of what equipment it's in. Tell him it's going to take R-134a, in case he doesn'tt know that.


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TXiceman

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Posted: 07/29/10 06:33am Link  |  Print  |  Notify Moderator

A real mechanic would look for the tag on the unit and if none available, he would charge it using the gauges. Sounds like he is a parts changer....not a technician.

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Ivylog

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Posted: 07/29/10 06:53am Link  |  Print  |  Notify Moderator

Run before it's too late. You can charge it yourself by buying a recharge kit that has a gauge on it and two more cans (3 total) should be enough.


This post is my opinion (free advice). It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.

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dougrainer

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Posted: 07/29/10 06:27am Link  |  Print  |  Notify Moderator

Find someone familiar with motorhome systems. Doug

http://www.evanstempcon.com/tsg_regridgechargeguid.php




GM (Chevy) P-30, L-19, L-29, L-65 2.75 Lbs.
GM (Chevy) P-12 w/Parallel-Flow Condenser 2.0 Lbs.
Workhorse before '05 model except W-24 2.75 Lbs. (1)
Workhorse - all models with black Behr condenser and two fans 2.00 Lbs.
Workhorse W16D/W20D Front Diesel 1.75 Lbs.
Workhorse W22/W24 w/Multi-flow Condenser and no fans 1.5 Lbs.
Ford E-33 w/Serpentine Condenser 2.25 Lbs.
Ford F-53 w/Fin & Tube Condenser 2.75 Lbs.
Ford V-10 Super Duty w/6mm Condenser 2.75 Lbs.
Freightliner Front Engine Diesel w/Parallel-Flow Condenser 1.5 Lbs.
Freightliner Front Engine Diesel w/remote mounted condenser and fan 2.25 Lbs.
(1) For W22 without an auxiliary condenser, charge would be 1.75 lbs and performance would be reduced.


REAR ENGINE DIESEL PUSHER CHASSIS CHARGE
Front-mounted Step well Parallel-Flow Condenser 2.00 Lbs.
Spartan (Fleetwood Heritage only) 5.25 Lbs.
Spartan Rear-Side Mounted Condenser (>500 HP) 4.5 Lbs.
Spartan Rear-Side Mounted Condenser (<500HP) 3.0 Lbs.
Spartan Rear Std Center Mounted Condenser 3.0 Lbs.
Spartan Front Mounted Evans Fin & Tube Condenser 3.5 Lbs.
Spartan Mid-Engine Chassis 2.5 Lbs.
Freightliner Rear Mounted Evans Fin & Tube Condenser 4.5 Lbs.
Freightliner Rear Mounted Parallel Flow Condenser 3.5 Lbs.
Freightliner Front Mounted Evans Fin & Tube Condenser 3.5 Lbs.
Workhorse Pusher Front Mounted Fin & Tube Condenser 3.0 Lbs.
Roadmaster (Monaco/Holiday Rambler) Rear Condenser 4.0 Lbs.


STEP VAN APPLICATIONS
GRUMMAN OLSON / MORGAN OLSON

CHASSIS CHARGE
Freightliner Front Engine, Gas or Diesel 1.50 Lbs.
GM (Chevy) P Series/Workhorse, Gas or Diesel 2.25 Lbs.
Workhorse 8.1 L Gas 2.00 Lbs.
Workhorse with International Engine 2.00 Lbs.
Navistar V-8 Diesel 2.25 Lbs.
Ford 2.25 Lbs.


UNION CITY BODY CO.

CHASSIS CHARGE
Freightliner Front Engine, Gas or Diesel 1.50 Lbs.
Workhorse, Gas or Diesel ***Prior to 6/2/2002 (small R/D)*** 2.75 Lbs.
Workhorse, Gas or Diesel ***After 6/2/2002 (large R/D)*** 3.50 Lbs.
Navistar V-8 Diesel 2.25 Lbs.

kneal44

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Posted: 07/29/10 06:16am Link  |  Print  |  Notify Moderator

rear compressor? mine take s three cans. i dont have a tag on my evaperator .

so i didit by feel. look at your expansion valve...after vacuum add one can and hook up another. you need 30 pounds at least on the sucktion side.

measure temp at expansion valve... you should see the sucktion side get 40 degrees or so when running and nearly full of 134 or any refrigerant.

you may need 3 cans like mine or more. i got 40 foot of host from compressor tothe evap in the front.

let us know how the job goes and how good your dash air works.


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82corvette

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Posted: 07/29/10 07:01am Link  |  Print  |  Notify Moderator

A tech that knows anything about AC will have a gauge manifold set and read the pressure to know when it is full.

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