Oil Cooler Line and Cooler Flushing
A transmission oil cooler and cooler line flushing must be performed
when the transmission is removed from the vehicle for service or overhaul
due to fluid contamination or pump and/or torque converter replacement. Flush
the transmission cooling system after transmission installation will ensure
that any contaminants remaining in the cooling system will not enter
the transmission and reduce the operational efficiency and life of the transmission.
Preparation Procedure
- After the overhauled or serviced transmission is installed in
the vehicle, do not connect the oil cooler lines to the transmission fittings.
Notice: Shop air supply must be equipped with a water/oil filter and not exceed
825 kPa (120 psi), or personal injury may result.
- Remove the fill cap on J 35944 and add 0.6 liter (20-21
ounces) of flushing solution. Do not overfill J 35944 with flushing solution
or J 35944 will require recharging prior to the backflush procedure. Follow
the manufacturer's suggested procedures for proper handling of the flushing
solution.
- Secure the fill cap and pressurize the flusher can with shop air
to 550-700 kPa (80-100-psi).
- Secure the discharge hose to the opposite end of the oil cooler
line that connects to the lower fitting of the radiator.
- Clip the discharge hose onto the drain container.
- Mount the flushing tool to the undercarriage of the vehicle with
the gook provided.
- Secure the hose on the flushing tool to the opposite end of the
oil cooler line that is connected to the upper connector on the radiator.
- With the water valve on the tool in the OFF position, connect
the water hose from the water supply to the tool.
- Turn on the water supply at the faucet.
Initial Flushing Procedure
Caution: If water does not flow through the oil cooler (system is completely
plugged), do not continue flushing procedure. Turn the water immediately and
inspect the pipes and ooler for restrictions and repair, or personal injury
could result.
- Switch the water valve on the tool
to the ON position. Allow the water to flow through the oil cooler and oil
cooler lines for 10 seconds to remove most of the transmission oil from the
cooling system.
- Switch the water valve on the tool to the OFF position and clip
the discharge hose on a 5 gallon pail with a lid, or position a shop
towel over the end of the discharge hose to prevent splash. The discharge
will foam vigorously when the solution is introduced into the water stream.
- Switch the water valve on the tool to the ON position and depress
the trigger to mix the flushing solution into the water flow. Use the balsa
clip provided on the handle in order to hold the trigger down.
Notice: Shop air supply must be equipped with a water/oil filter and not exceed
825 kPa (120 psi), or personal injury may result.
- Flush the oil cooler and oil cooler
lines with water and solution for 2 minutes. During this flush, attach the
air supply to the air valve located on the plumbing of the tool for 3-5
seconds at the end of every 15-20 second interval in order to create
a surging action.
- Release the trigger and switch the water valve on the tool to
the OFF position.
- Disconnect both hoses from the oil cooler lines.
Backflushing Procedure
- Connect the hoses to the oil cooler lines opposite from the initial
flushing procedures in order to perform a backflush.
- Repeat the flushing procedure from the initial flushing procedure
except, backflush the cooling system for only 1 minute.
- Switch the water valve on the tool to the OFF position and turn
the water supply OFF at the faucet.
- Attach the air supply to the air valve located on the plumbing
of the tool and dry the cooling system out with air for at least 2 minutes.
| • | Dry the system for a longer period of time if the moisture is
visible exiting from the oil cooler line discharge hose. |
| • | Use an air chuck clip, if available, in order to secure the air
chuck onto the air valve for ease of operation. |
- Remove the discharge and flushing tool hoses from the oil cooler
lines.
- Connect the oil cooler lines to the transmission. Refer to
Oil Cooler Hose/Pipe Replacement
.
- Clean the tool after every third use.
Tool Cleaning Procedure
| • | Disconnect the water supply hose from the tool. |
| • | Bleed the air pressure from the can, remove the fill cap, return
any unused solution to the solution container and rinse the can out with water.
Do not store the tool with the solution in the tank. |
| • | Remove the screen from the plumbing and wash the screen with water. |
| • | Use the cleaning pin in order to remove any material in the solution
orifice. The orifice is located in the plumbing below the screen. |
| • | Reconnect the plumbing and fill the can half with water, secure
the fill cap, and pressurize the can to 550-700 kPa (80-100 psi).
|
| • | Aim the tool into the 5 gallon pail or floor drain and
depress the trigger to allow the water from the can to flow through he solution
orifice for 30 seconds in order to ensure proper cleaning of the tool. |
| • | Bleed the air pressure from the can, remove the fill cap, and
empty the can. |
| • | Reconnect the fill cap to the flushing tool. |
