Maintenance Standards; Seals; Maintenance Standards For Wearable Parts - Doosan DX140R Shop Manual

MAINTENANCE STANDARDS

GM Motor has to be disassembled and inspected in compliance
with this standard. Take utmost care not to scratch on the
moving and reciprocating surfaces.

Seals

Seals (O-ring, oil seals, floating seas) must be replaced with
new seals, regardless of the damage, once disassembled.

Maintenance Standards for Wearable Parts

1. Any parts which show visible defect must be replaced with
new ones.
2. Replace the parts which show following defects.
Part
Name
No.
1 Hub
2 Spindle
3, 7
Carrier Assembly
4 Sun Gear 1
8 Sun Gear 2
5 Planetary Gear 1
9 Planetary Gear 2
24 Ball Bearing
301 Rear Flange
102 Shaft
103 Swash Plate
104 Cylinder Block
Piston Assembly
105
Piston
106
Shoe
Travel Moter
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Defect Description
·
Any major visible defect.
·
Pinching on the tooth of ring gear.
·
Abnormal wear such as scratch.
·
Any major visible defect.
·
Abnormal wear such as scratch.
·
Abnormal wear such as scratch.
·
Pinching on tooth.
·
Breaking on the working surface of
bearing.
·
Dent.
·
Breaking.
·
Biased wear.
Scratch on the reciprocating surface
between the Spools (323, 363) and
Piston (381).
·
Wear on the fitting surface with the Oil
Seal [132].
·
Worn spline.
Sooting.
·
Worn spline.
·
Serious wear on the inside of the bore.
·
Scratch or biased wear on the
reciprocating surface with the Timing
Plate (109).
·
Skimmer on the axial direction of the
Piston (105) and Shoe (106).
·
Abnormal, biased wear of Shoe (106).
Allowable
Standard Size
Range
-
-
-
-
-
-
-
-
Skimmer Skimmer
0.15 mm 0.15 mm
-
-
-
-
-
-
-
-
SP001346