TM 5-3805-281-24-1
Tests
HYDRAULIC OIL CLEANUP PROCEDURE USING PORTABLE FILTER CADDY
Hydraulic Oil Tank Filtering--Specification
SPECIFICATIONS
Hydraulic Oil Tank Capacity
159 L (42 gal)
Time ............................................................... 14 minutes approximate
Hydraulic Oil Tank Filtering
14 minutes approximate
Time
NOTE: Filtering time for hydraulic oil tank is 0.089
Hydraulic System Capacity
322 L (85 gal)
minute x number of liters (0.33 minutes x
Hydraulic System Filtering Time
51 minutes approximate
number of gallons).
SERVICE EQUIPMENT AND TOOLS
4. Leave filter caddy operating for the next step.
Portable Filter Caddy
5. Start the engine and run it at fast idle.
Two 3658 mm (12 ft) x 3/4 in. I.D. 100R1 Hoses with 3/4 M NPT
Ends
IMPORTANT: For the most effective results,
Quick Disconnect Fittings
cleaning procedure must start with
Suction Wand
the smallest capacity circuit then
Discharge Wand
proceed to the next larger capacity
circuit.
1. Install new return filter elements.
6. Starting with the smallest capacity circuit, operate
NOTE: For a failure that creates a lot of debris,
each function through a complete cycle.
remove access cover from hydraulic oil tank.
Drain the tank. Connect filter caddy suction
Repeat procedure until the total system capacity
line to drain port. Add a minimum of 19 L (5
has circulated through filter caddy seven times.
gal) of oil to the tank. Operate filter caddy and
Each function must go through a minimum of three
wash out the tank.
complete cycles for a thorough cleaning of oil.
9025
IMPORTANT: The minimum ID for a connector is
25
Hydraulic System--Specification
1/2 in. to prevent cavitation of filter
40
Capacity ........................................................................ 322 L (85 gal)
caddy pump.
Hydraulic System Filtering--Specification
2. Put filter caddy suction and discharge wands into
the tank filler hole so ends are as far apart as
Time ............................................................... 51 minutes approximate
possible to obtain a thorough cleaning of oil.
NOTE: Filtering time for complete hydraulic system is
3. Start the filter caddy. Check to be sure oil is flowing
0.158 minute x number of liters (0.6 minute x
through the filters.
number of gallons). Filtering time for machines
with auxiliary hydraulic functions must be
Operate filter caddy until all oil in the tank has been
increased because system capacity is larger.
circulated through the filter a minimum of four
times.
7. Stop the engine. Remove the filter caddy.
Hydraulic Oil Tank--Specification
Capacity ........................................................................ 159 L (42 gal)
Continued on next page
CED,TX08227,3022
1917MAR981/2
