L400 AC Fill Quantity

HammerOfThorazine

HammerOfThorazine

Member
Good day,

So far as best as I can tell my 94 L400 uses R-134a, but I'm having a hard time finding the fill quantity. I found one for a 96 that is 650, could that be right?
Second, where is this port located on the L400? I have been unsuccessful with finding a diagram to explain it.

Thank you.
 
Update: My shop said the compressor is running very weak and leaking. So they recommend replacing the compressor, dryer, and condenser. Looks like I will be ordering some parts!
 
Well, I tried Amayama and no luck. But I did find this thread on this forum with people working through the same issue. Short story for me...I may think long and hard before putting all the pieces of the puzzle together. I may also try contacting Rising Sun in BC to see if they can put together a package. I also need to replace belts.
 
Sthaddeus said:
Well, I tried Amayama and no luck. But I did find this thread on this forum with people working through the same issue. Short story for me...I may think long and hard before putting all the pieces of the puzzle together. I may also try contacting Rising Sun in BC to see if they can put together a package. I also need to replace belts.
Click to expand...
I figured Amayama would be the place to try. Was it totally unavailable or was it a cost prohibitive thing? Every once in awhile I see things on there for utterly insane prices. When you come across a source, I'd appreciate it if you passed it along. I'd definitely be interested in stocking up on those AC parts.
 
There is a sight glass built into the receiver drier. As you are filling the system it will go from showing bubbles passing "window" to clear. After sight glass goes clear add another 4 to 6 ozs and system should be fine.

How can you tell if a compressor is running weak? Has system been fully charged to max capacity and is unable to reach pressures specified on performance page in service manual? My experience has shown that either compressors work or they don't. I can't say I have seen many weak ones. Delicas use a scroll type compressor, It has no valves to fail. Mine was totally dead, it just made noise when clutch was engaged.

As far as replacing condenser goes I would inspect it for bits of metallic contamination on the inlet side before I decided to buy one. If it shows clean, run it. Use a Q tip. The receiver drier catches most of the pieces if a compressor is shedding parts. Failed expansion valves that are contaminated also indicate need to replace condenser.

I recomend replacing drier when compressor is replaced, always good practice. I think a 2004 Mitsubishi Montero (US Model) receiver drier will fit a 95 Delica w/4M40. It's likely that engine is irrelevant as the system with possible exception of compressor will be the same for all engines. The HVAC system is more of a body part than engine part.

LEAKS are going to be your biggest adversary in a Delica AC system. There are a lot of connections with a dual system. Any one of them of them are possible leakers. When your R134a leaks out the refrigerant oil will no longer move throught the system properly, the refrigerant gas carries the oil around the system, no gas, no oil, no lubrication equals compressor failure. All original O rings are old, black ones are inferior to the newer green ones, plus green ones will be new. I recomend changing all accessable O rings, pressure test system with nitrogen or CO2 for 24hrs a 250psi befor charging. Use refrigerant oil containing UV dye so if you do have a leak it is easier to find, a green stain is hard to argue with when looking for a leak.
 
kbrown934 said:
There is a sight glass built into the receiver drier. As you are filling the system it will go from showing bubbles passing "window" to clear. After sight glass goes clear add another 4 to 6 ozs and system should be fine.

How can you tell if a compressor is running weak? Has system been fully charged to max capacity and is unable to reach pressures specified on performance page in service manual? My experience has shown that either compressors work or they don't. I can't say I have seen many weak ones. Delicas use a scroll type compressor, It has no valves to fail. Mine was totally dead, it just made noise when clutch was engaged.

As far as replacing condenser goes I would inspect it for bits of metallic contamination on the inlet side before I decided to buy one. If it shows clean, run it. Use a Q tip. The receiver drier catches most of the pieces if a compressor is shedding parts. Failed expansion valves that are contaminated also indicate need to replace condenser.

I recomend replacing drier when compressor is replaced, always good practice. I think a 2004 Mitsubishi Montero (US Model) receiver drier will fit a 95 Delica w/4M40. It's likely that engine is irrelevant as the system with possible exception of compressor will be the same for all engines. The HVAC system is more of a body part than engine part.

LEAKS are going to be your biggest adversary in a Delica AC system. There are a lot of connections with a dual system. Any one of them of them are possible leakers. When your R134a leaks out the refrigerant oil will no longer move throught the system properly, the refrigerant gas carries the oil around the system, no gas, no oil, no lubrication equals compressor failure. All original O rings are old, black ones are inferior to the newer green ones, plus green ones will be new. I recomend changing all accessable O rings, pressure test system with nitrogen or CO2 for 24hrs a 250psi befor charging. Use refrigerant oil containing UV dye so if you do have a leak it is easier to find, a green stain is hard to argue with when looking for a leak.
Click to expand...
 
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