TM 5-3805-280-24-1
Tests
HYDRAULIC OIL CLEANUP PROCEDURE USING PORTABLE FILTER CADDY
SPECIFICATIONS
NOTE: Filtering time for hydraulic oil tank is 0.089
minute x number of liters (0.33 minutes x
Hydraulic Oil Tank Capacity
148 L (39 gal) approximate
number of gallons).
Hydraulic Oil Tank Filtering
13 minutes approximate
Time
4. Leave filter caddy operating for the next step.
Hydraulic System Capacity
270 L (71 gal) approximate
Hydraulic System Filtering Time
43 minutes approximate
5. Start the engine and run it at fast idle.
SERVICE EQUIPMENT AND TOOLS
IMPORTANT: For the most effective results,
Portable Filter Caddy
cleaning procedure must start with
3658 mm (12 ft) x 3/4 in. ID 100R1 Hose with 3/4 M NPT Ends
the smallest capacity circuit then
(2 used)
proceed to the next larger capacity
Quick Disconnect Fittings
circuit.
Suction Wand
6. Starting with the smallest capacity circuit, operate
Discharge Wand
each function through a complete cycle.
1. Install new return filter elements.
Repeat procedure until the total system capacity
has circulated through filter caddy seven times.
NOTE: For a failure that creates a lot of debris,
Each function must go through a minimum of three
remove access cover from hydraulic tank.
complete cycles for a thorough cleaning of oil.
Drain hydraulic tank. Connect filter caddy
suction line to drain port. Add a minimum of 19
Hydraulic System--Specification
L (5 gal) of oil to hydraulic oil tank. Operate
filter caddy and wash out the hydraulic oil tank.
Capacity ................................................... 270 L (71 gal) approximate
Filtering Time ................................................. 43 minutes approximate
9025
IMPORTANT: The minimum ID for a connector is
25
1/2 in. to prevent cavitation of filter
35
NOTE: Filtering time for complete hydraulic system is
caddy pump.
0.158 minute x number of liters (0.6 minute x
number of gallons). Filtering time for machines
2. Put filter caddy suction and discharge wands into
with auxiliary hydraulic functions must be
hydraulic oil tank filler hole so ends are as far apart
increased because system capacity is larger.
as possible to obtain a thorough cleaning of oil.
7. Stop the engine. Remove the filter caddy.
3. Start the filter caddy. Check to be sure oil is flowing
through the filters.
8. Install new return filter elements.
Operate filter caddy until all the oil in hydraulic oil
9. Check oil level in hydraulic tank, add oil if
tank has been circulated through the filter a
necessary. (See Hydraulic Oil in Group 9000-04.)
minimum of four times.
Hydraulic Oil Tank--Specification
Capacity ................................................... 148 L (39 gal) approximate
Filtering Time ................................................. 13 minutes approximate
TX,9025,GG2644 1913AUG981/1
6-165
