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Section 2 General Instructions
2.5
BEARINGS
2.5.1 Removal
1. Bearings should never be removed unless
absolutely necessary. Always use the
recommended puller to reduce the risk of
bearing or related component damage.
2. When bearings or bushings are removed,
check that the bearing is free from discoloration, nicks, scuffing, and signs of
overheating. If in doubt, replace the bearing
or bushing.
2.5.2 Cleaning
Bearings acceptable for service should be cleaned
in a suitable solvent and immersed in clean
lubricating oil until needed.
Be sure that hydraulic oil is at operating temperature (80 to 120 °F) before adjusting relief valves,
pressure reducing valve or sequence valve. If
necessary, operate the machine to raise the oil
temperature. The oil temperature can be checked
by placing a hand against the side or the bottom of
the reservoir. If your hand feels too hot to keep
against the reservoir, the oil temperature is
acceptable.
2.7
2.7.1 Fasteners
All fasteners are plated and equal to SAE grade 5
(PC8.8) unless otherwise specified.
2.7.2 Bolts and Nuts
Unless otherwise specified the following grade 5
(PC8.8) torque values (±10%) apply:
2.5.3 Installation
1. Be sure bearings are installed with care during
servicing, maintenance and repair.
2. Install bearings in either of the following two
ways:
• press fit on rotating parts such as shafts and
gears, and
• push fit into static locations such as reduction gear housings.
3. When possible, always install the bearing into
the rotating part first.
4. Use the proper tools or a press when installing
a bearing or bushing.
5. In the absence of the proper tools or press,
heat the bearings and/or casing in hot oil to
assist in the installation.
2.6
PRESSURE TESTING
AND ADJUSTMENT
Prior to pressure testing or adjustment, be sure all
hoses are in good condition and all fittings tight.
Use a pressure gauge with a range that is large
enough to measuring the specified pressure.
Comply with the correct procedure to prevent
damage to the system or the equipment and to
eliminate the possibility of injury.
2-3
TORQUES
Torque
Torque
Inch
lb-ft
Nm
mm
Nm
lb-ft
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1.0
9
18
31
50
75
110
150
250
380
585
12
24
42
68
105
150
200
340
515
790
6.0
8.0
10.0
--12.0
14.0
16.0
20.0
22.0
24.0
10
25
50
--80
130
200
360
510
650
7
18
37
--59
95
146
263
372
475
2.7.3 Flared Fittings (37o, steel)
1. Align tube and fitting
2. Tighten nut to the following torque:
Torque
SAE
Size
lb-ft
Nm
4
6
8
10
12
14
16
20
24
8-12
19-23
38-46
50-58
84-92
100-108
117-129
176-200
251-283
11-16
26-31
52-63
68-79
114-125
136-147
159-175
239-271
340-384
Model 6036 S/N 9B0499 and Before