Manitowoc Grove YB5515 Service Manual

GROVE Published 10-21-2010, Control# 198-04 1-11
5540F/YB5515 SERVICE MANUAL
1
Torque wrenches are precision instruments and must be
handled with care. To ensure accuracy, calibrations must be
made on a scheduled basis. Whenever there is a possibility
that a torque wrench may have been either overstressed or
damaged, it should immediately be removed from service
until recalibrated. When using a torque wrench, any erratic or
jerking motion can result in the application of excessive or
improper torque. ALWAYS use a slow, even movement and
STOP when the predetermined value has been reached.
When using step wrenches, calculated wrench settings are
valid only when the following conditions are met:
• Torque wrenches must be those specified and forces
must be applied at the handle grip. The use of handle
extensions will change applied torque to the bolt.
• All handles must be parallel to the step wrench during
final tightening. Multiplier reaction bars may be
misaligned no more than 30 degrees without causing
serious error in torque.
• Multiplier bar handles must be propped or supported
within the outer 1/4 of the handle length, or serious
under or over tightening will occur.
To convert pounds-foot (lb-ft) of torque to newton meters
(Nm), multiply the pounds-foot quantity by 1.3558.
To convert pounds-inch (lb-in) of torque to newton meters
(Nm), multiply the pounds-inch quantity by 0.11298.
Torque Values
The following tables list the torque values for both ASME
standard and metric fasteners. The tables list the values for
grade 5 and grade 8 zinc-flake coated, untreated (black)
finish and stainless steel fasteners.
Table 1-2: UNC (Course) Thread: Torque Values for Zinc-Flake Coated and Untreated Fasteners
NOTE: Studs shall be torqued using capscrew values when grade is known.
Bolt Diameter - Inches
Torque Values (Pounds-Foot, Maximum/Minimum)
SAE Grade 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 1-1/8 1-1/4 1-1/2
Zinc-Flake
5 7 14 25 40 61 88 121 213 342 512 636 884 1532
8 10 20 36 57 86 124 171 301 483 723 1032 1433 2488
Untreated
5
9.0
7.7
19
17
32
30
52
48
78
72
114
106
156
144
270
249
416
384
606
560
813
751
1141
1053
2028
1865
8
12.5
11.5
26
24
48
44
73
67
120
110
161
143
234
216
385
355
615
567
929
857
1342
1234
2043
1885
3276
3024
SAE Grade 1
and Grade 2
HHCS
SAE Grade 5
HHCS
SAE Grade 7
HHCS
SAE Grade 8
HHCS
Serrated
Flange Head
Socket Head
Shoulder
Screw
Socket Head
Capscrew
FIGURE 1-10
Reference Only

Manitowoc Grove YB5515 Specifications

General

Brand	Manitowoc
Model	Grove YB5515
Category	Construction Equipment
Language	English