MAINTENANCE
7-57
Service Recommendations for Hydraulic Fittings
Two hydraulic fitting designs are used on this machine.
Flat Face O-ring Seal Fitting (ORS Fitting)
An O-ring is used on the sealing surfaces to prevent oil
leakage.
1. Inspect fitting sealing surfaces (6). They must be free of
dirt or defects.
2. Replace O-ring (1) with a new one when assembling
fittings.
3. Lubricate O-ring (1) and install it into groove (3) using
petroleum jelly to hold it in place.
4. Tighten fitting (2) by hand, pressing the fitting joint
together to ensure O-ring (1) remains in place and is not
damaged.
5. Tighten fitting (2) or nut (4) to the torque values shown.
Do not allow hose (5) to twist when tightening fittings.
6. Check for leaks. If oil leaks from a loose connection, do
not tighten fitting (2). Open the connection, replace
O-ring (1) and check for correct O-ring position before
tightening the connection.
Torque specifications
±10 %
Width across flats
(mm)
27
(1.1 in)
32
(1.3 in)
36
(1.4 in)
41
(1.6 in)
50
(2.0 in)
Tightening
torque
N·m
93
132
176
206
330
(kgf·m)
(9.5)
(14)
(18)
(21)
(34)
(lbf·ft)
(69)
(101)
(130)
(152)
(243)
2
1
4
5
3
6
M104-07-033
Summary of Contents for 70Z7
Page 2: ...93108 00691 April 2015...
Page 5: ......
Page 11: ...MACHINE NUMBERS 2 MEMO...
Page 51: ...SAFETY LABELS S 40 6 10 4 1 3 9 6 5 SS 3461...
Page 171: ...OPERATOR S STATION 1 110 MEMO...
Page 173: ...BREAK IN 2 2 MEMO...
Page 187: ...OPERATING THE ENGINE 3 14 MEMO...
Page 231: ...OPERATING THE MACHINE 5 24 MEMO...
Page 359: ...MAINTENANCE 7 118 MEMO...
Page 363: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 4 MEMO...
Page 367: ...STORAGE 10 4 MEMO...
