John Deere 5310 S - Manual (Page 60)

Rockshaft and 3-Point Hitch
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Warming Hydraulic System Oil
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A—Hydraulic Oil Filter
Hydraulic system may be slow to function when tractor is
started in cold weather. This is because cold oil will not
flow as easily through the hydraulic system filter (A).
Steering may be slow until system warms up.
Hydraulic system will function normally when oil warms
up.
IMPORTANT: To prevent damaging hydraulic pump or
relief valve, DO NOT exceed two to
three minutes warm-up time with
steering wheel held in full left or full
right turn position.
1. Depress clutch pedal, start engine and idle at about
1000 RPM.
2. Turn and hold steering wheel in full left or right turn.
55-11
082206
PN=58