Filter
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GB - 26
4. Clean the filter mounting surface and
then lubricate rubber gasket on new oil
filter with clean hydraulic oil.
5. Spin new oil filter onto filter housing until
it makes contact. Tighten oil filter
another 3/4 turn.
6. Install the filter guards removed in
step 2. Tighten the mounting screws to
5.38 lbf-ft (7.3 N•m).
7. Fill with 20W-50 engine oil with an SL
API classification until oil appears at the
bottom of the drain plug (about 2 quarts
per trans axle). Install the drain plug and
tighten it to 14.97 lbf-ft (20.3 N•m).
8. Repeat steps 1–7 for the other trans
axle.
9. Follow the instructions in “To Add
Hydraulic Fluid:” on page 25.
Purging the Hydraulic System
1. With the unit up to and facing a wall, jack
up the unit so that both drive wheels are
off the ground.
2. Disengage the parking brake and put the
trans axle bypass levers in the neutral
position (see MOVING UNIT
MANUALLY on page 16).
3. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
4. Stop the engine and put the trans axle
bypass levers in the drive position (see
MOVING UNIT MANUALLY on
page 16).
5. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
6. Stop the engine, check the oil level and
add oil as needed.
7. Repeat steps 2–6 until the trans axles
operate smoothly in forward and reverse
at normal speeds without excessive
noise.
Figure 26
1. Drain Plug
2. Oil Filter
3. Filter Guard
4. Mounting Hardware
1
4
3
2
WARNING: This adjustment
requires operating the engine.
Use extreme care to avoid
contact with moving parts and hot
surfaces. Be sure rear of unit is
well supported and secure before
starting engine.