MAINTENANCE
7-48
2
1
4
5
3
6
Service Recommendations for Hydraulic Fittings
Two hydraulic fitting designs are used on this machine.
Flat Face O-ring Seal Fitting (ORS Fitting)
O-ring (1) is used on the sealing surfaces of adapter (2) to
prevent oil leakage.
Precautions for Use
1. Replace O-ring (1) with a new one when assembling
fittings.
2. Check that O-ring (1) is properly fitted in O-ring groove
(3). Tighten union (4).
Tightening union (4) with O-ring (1) out of the groove
may damage O-ring (1) and cause oil leak.
3. When assembling fittings, take care not to make a dent
on O-ring groove (3) of adaptor (2) and sealing surface
(6) on hose (5) or valve side. Failure to do so may result in
damage to O-ring (1) leading to oil leak.
4. If oil leaks from a loose connection of union (4), do not
tighten fitting (2). Open the connection, replace O-ring
(1) with new one and check for correct O-ring position
before tightening the connection.
Tightening Torque:
Tighten fittings to the torque values shown below.
±
10 %
Wrench size (mm)
27
32
36
41, 46
Tightening
Torque:
N
·
m
95
140
180
210
(kgf
·
m) (9.5)
(14)
(18)
(21)
M104-07-033
Summary of Contents for 090001
Page 4: ......
Page 9: ...CONTENTS Bucket Teeth Transverse Type Pin Used Type 13 18 INDEX 14 1 ...
Page 10: ...CONTENTS MEMO ...
Page 14: ...MACHINE NUMBERS 4 MEMO ...
Page 64: ...MEMO SAFETY SIGNS S 50 ...
Page 198: ...OPERATOR S STATION 1 134 MEMO ...
Page 200: ...BREAK IN 2 2 MEMO ...
Page 212: ...OPERATING THE ENGINE 3 12 MEMO ...
Page 266: ...OPERATING THE MACHINE 5 46 MEMO ...
Page 398: ...MAINTENANCE 7 124 MEMO ...
Page 399: ...8 1 HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT Hydraulic Circuit MDAA 08 001 ...
Page 402: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 2 MEMO ...
Page 404: ...STORAGE 10 2 MEMO ...