G 20 Van V8-379 6.2L DSL (1987)
assembly has been reinstalled in the vehicle.
The service procedure steps for oil cooler flushing are as follows:
Equipment and Materials Needed
Kent-Moore Cooler Flusher Tool, J 35944 and Biodegradable Flushing Solution* Measuring Cup (Supplied with tool) Funnel Water supply (hot water
recommended in all cases if available) Water Hose (at least 5/8 inch diameter) Air Supply (with water and oil filter). Air Chuck (with clip if available)
Air Pressure Gauge Oil Drain Container Five Gallon Pail (or larger - with lid) Eye Protection Rubber Gloves
*
Solution available by the gallon, J 35944-20, or six-gallon case, J 35944-CSE.
PREPARATION
1.
After overhauled or service replacement transmission/transaxle is reinstalled in vehicle, do not reconnect oil cooler pipes.
2.
Remove fill cap on tool and fill can with 0.6 liter. (20-21 ounces) of Kent-Moore Biodegradable Flushing Solution. Do not overfill or tool will
need to be recharged with air before backflush. Follow manufacturer's suggested procedures for proper handling of solution.
IMPORTANT:
Do not substitute with any other solution. The flushing tool is designed to use only this concentrate. Use of any other solution can
result in damage to the tool, cooler components, or improper flushing of the cooler.
3.
Secure fill cap and pressurize the flusher can with shop air to 550-700 KPA (80-100 PSI).
CAUTION: Shop air supply must be equipped with a water/oil filter and not exceed 825 KPA (120 PSI).
4.
Connect the discharge hose to the transmission end of the oil cooler pipe that goes to the top fitting at the radiator.
5.
Clip discharge hose onto the oil drain container.
6.
Mount the flushing tool to the undercarriage of vehicle with the hook provided and connect the hose from the flushing tool to the remaining oil
cooler pipe.
7.
With the water valve on the tool in the off position, connect the waterhose from the water supply to the tool.
8.
Turn on the water supply at the faucet.
Initial Flush
9.
Switch the water valve on the tool to the on position and allow the water to flow through the oil cooler for 10 seconds to remove the supply of
transmission fluid in the system.
CAUTION: If water does not flow through the oil cooler (system is completely plugged) do not continue flushing procedure. Turn the water off
immediately and inspect the pipes and cooler for restriction. Replace the oil pipe (s) and/or cooler according to the Service Manual.
10.
Switch the water valve on the tool to the off position and clip the discharge hose onto a five gallon pail with a lid or position a shop towel over the
end of the discharge hose to prevent splash. Discharge will foam vigorously when solution is introduced into water stream.
11.
Switch the water valve on the tool to the on position and depress the trigger to mix flushing solution into the water flow. Use the bale clip provided
on the handle to hold the trigger down.
12.
Flush oil cooler with water and solution for two minutes. During this flush, attach the air supply to the air valve located on plumbing of tool for 3
to 5 seconds at the end of every 15-20 second interval to create a surging action.
CAUTION: Shop air supply must be equipped with a water/oil filter and not exceed 825 KPA (120 PSI).
13.
Release the trigger and switch the water valve on the tool to the off position.
14.
Disconnect both hoses from the oil cooler pipes.
Backflush
15.
Connect hoses to the oil cooler pipes opposite from the initial flush procedures to perform a backflush.
16.
Repeat steps 11 and 12.
17.
Release the trigger and allow water only to rinse the oil cooler for one minute.
18.
Switch the water valve on the tool to the off position and turn the water supply off at the faucet.
