REMOVAL AND INSTALLATION HYDRAULIC SYSTEM
EX20 Series 30-13
HYDRAULIC SYSTEM
Tightening torque for allow, nipple, union
Tightening torque for elbow, nipple, union
CAUTION
• Fit blind plugs immediately after removing the hydraulic piping or hydraulic equipment.
• Do not remove the hydraulic tank cap or radiator cap immediately after stopping operations. Hot gas or steam will
spurt out.
• Method of releasing pressure
1. Lower the work equipment to the ground.
2. Stop the engine, then operate the lever 2 or 3 times.
3. Turn the oil filler cap slowly.
Width across flats (mm) 22 30 36
Width(mm)192230
Tightening torque Nm {kgm} 30–39 {3–4} 79–103 {8–10.5} 118–162 {12–16.5}
Port size (inches) 3/4–16 UNF 13/16–12 UNF 15/16–12 UNF
Tightening torque Nm {kgm} 69–74 {7–7.5} 118–162 {12–16.5} 108–147 {11–15}
Width across flats (mm) 19 24 27 32 36
Inside diameter (mm) 14 18 22 24 30
Tightening torque Nm {kgm}
20–30
{2–3}
30–69
{3–7}
59–98
{6–10}
108–167
{11–17}
147–206
{15–21}
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