MacDon 873 Combine Adapter - Manual (Page 31)

Form # 147069 Issue 09/06 29
MAINTENANCE/SERVICE
HYDRAULIC SYSTEM (continued)
Hydraulic Oil
The combine adapter’s hydraulic system provides oil for the draper and feed drum drives.
Check oil level every 25 hours at dipstick (A). Maintain level between “LOW” and “FULL” marks when oil is
cold.
Capacity: Full system: 33 litres (8-3/4 U.S. gallons)
Tanks only: 27 litres (7-1/8 U.S. gallons)
Type: See recommended lubricants, page 25.
NOTE: When ambient temperatures are above 35º
C (95º F), maintain oil level in the low portion of
the range to prevent overflow at breather under
operating temperatures.
Change hydraulic oil every 1000 hours or 3 years:
1. Remove dipstick cap (A).
2. Remove plug (B) at right reservoir and hose
(D) at left reservoir. Loosen elbow at (D) to
point down for drainage.
NOTE: A drain pan with a capacity of 15 litres
(4 U.S. gallons) will be required for each
reservoir.
3. Replace the hydraulic oil filter. See below.
4. Replace plug (B). Tighten elbow fitting and
replace hose at (D).
5. Remove hose at (E) and fill the reservoirs
through the blue marked fitting from a
pressurized oil source.
6. Replace cap (A) and hose at (E).
NOTE: Do not fill system through cap port (A). Oil
will not reach left reservoir. If a pressurized source
of oil is not available, pump oil from right reservoir
to left as follows:
• Leave all plugs and hoses installed.
• Fill R/H reservoir with oil through cap port
(A).
• Run the adapter pump until feed drum stops
turning.
• Re-fill R/H reservoir.
• Repeat procedure until oil level in R/H
reservoir remains between LOW and FULL
on dipstick.
Hydraulic Oil Filter
Change hydraulic oil filter (C) after the first 50
hours operation and every 250 hours thereafter:
1. Clean around the filter head.
2. Remove the filter and clean the gasket surface
of the filter head.
3. Apply a thin film of clean oil to the gasket on
the new filter.
4. Install the new filter. Turn the filter onto the
mount until the gasket contacts the filter head.
Tighten the filter an additional 1/2 to 3/4 turn
by hand.
IMPORTANT: Do not use a filter wrench to install
the filter. Over-tightening can damage gasket and
filter.
RIGHT HYDRAULIC RESERVOIR
A
C
B
LEFT HYDRAULIC RESERVOIR
E
D