This instruction show you guide on how to replace a new hydraulic oil return filter for Kubota U48-4 U55-4 compact excavator.
Related Contents:
Takeuchi Excavator Workshop EPC+Service Manual 2018 PDF Files
2022 Kubota Takeuchi Diagmaster v22.08.01 v4.1.2 Software Free Download
Kubota EPC Spare Parts Catalogue 2021.06 Download
Procedures:
Hydraulic oil tank components
Removing the cover (tank)
1.Loosen the hose clamp (3), remove the hose (return) (4), hose (return, cooler) (5), from the cover (tank) (1) side.
2.Remove the cover (tank) (1) mounting bolt (2).
(1) Cover (tank)
(2) Bolt
(3) Hose clamp
(4) Hose (return)
(5) Hose (return, cooler)
3.Pull up the cover (tank) (1) and remove the filter (return) (6).
(1) Cover (tank)
(6) Filter (return)
4.Clamp in a vice, loosen the set bolt (7), and remove the stopper (8).
5.Remove the filter (return) (9) using a wrench (1).
Wrench : 41 mm, 1.6 in. (two opposite faces)
Tightening torque Filter (return) (9) 68.6 to 78.4 N·m 7.0 to 8.0 kgf·m 50.6 to 57.8
CAUTION
If the wrench (1) is placed on the nut on (a) side, the filter will break.
(1) Wrench
(2) Stopper
(9) Filter (return)
Filter (suction) replacement procedure
1.Remove the filter (return) from the tank.
Remove the bracket (1)
(1) Bracket
(2) Bolt (M10 x 16)
2.Remove the bolt and the suction filter mounting pin (3).
(3) Pin (suction)
3.Hold onto the upper part of the filter (support) and remove the filter (suction) (4) from the tank.
(1) Strainer
(2) Nut
(4) Filter (suction)
Tightening torque Nut (2) 16 to 24 N·m /1.6 to 2.4 kgf·m /12 to 18 lbf·ft
Filter (breather) replacement procedure
1.Loosen the bolt (1), and remove the washer (2).
(1) Bolt
(2) Metal washer
2.Remove the filter (breather) (3) from the tank.
(3) Filter (breather)
Assembly of anti vibration support for the hydraulic oil tank
Tightening order for each bolt
The tightening order for each bolt is indicated using the letters (a) through (d) in the diagram to the left.
1.After assembly, fully tighten the (a) bolt to the arch.
2.Lightly tighten bolts (b), (c), and (d) together with the assembly of their associated components.
3.Tighten in the order of (b)→(c)→(d).
4.Be sure the (b) bolt is assembled straight and not cross threaded.
Tightening torque Bolts (a) (b) (c) (d)
77.5 to 90.2 N·m
7.9 to 9.2 kgf·m
57.2 to 66.5 lbf·ft
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