425HD-MD INITIAL SETUP
Hydraulic Fluid
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3-8 425HD-MD/masterdoc101602 425HD-MD INITIAL SETUP
3.9 Hydraulic Fluid
The Model 425HD-MD Articulator uses a specific type of oil in the hydraulic system. This
oil is formulated to prolong the life of the hydraulic pumps. LasTec has developed a kit,
which contains (2) 2 1/2 gallon reusable containers of oil and (2) oil filters. This is enough
oil and filters for (2) complete hydraulic system oil changes (system capacity is approxi-
mately 7 quarts). The hydraulic oil kit part number is 028536.
LasTec recommends that machines from Serial No. 1000398 to 1830299 switch to this oil
upon the next scheduled hydraulic oil change. Machines as of Serial No. 1840299 are
supplied with this oil at the factory. LasTec recommends the use of this oil in the
hydraulic system.
With the engine turned off, check the hydraulic fluid level and condition. The hydraulic oil
tank is located under the engine cover, to the left of the engine. Make sure the hydraulic
oil level remains at the FULL mark at all times. Do not overfill.
Inspect the entire hydraulic system for leaks. Areas to inspect include the motors and
pumps, the filter, tank, and coolers, the deck lift arm cylinder (under the front left of the
frame), all hoses, clamps, and fittings, and the entire area under the hydraulic system. If
any leaks are discovered, allow ample time for the hydraulic fluid to cool. Repair or
replace the defective parts and re-fill the hydraulic system before operating the Articula-
tor. Be sure to close the engine cover, and secure all latches.
Hydraulic Fluid is pressurized! ALWAYS keep well away from any
leaks or loose connections while system is pressurized!
HYDRAULIC FLUID IS HOT! Always allow ample time for hydraulic
fluid to cool before changing or repairing leaks!
Be sure to use the correct fluid in the transmission! Check fluid level
and quality daily! Incorrect fluid, inadequate fluid level, or
contaminated fluid will cause transmission damage!
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