MSI QI-1000, Техническое руководство, Страница: 56 / 56

9.20 Recommended Torques
GENERAL TORQUE TABLE
Cap screws, nuts & bolts Alloy Steel Studs & Nuts
SAE GRADE 5 SAE GRADE 7
Thread Dia &
Thread Pitch
Dry Threads Torque
(ft*lbs)
Lubricated Thrds.
Torque (ft*lbs)
Dry Threads
Torque (ft*lbs)
Lubricated Thrds.
Torque (ft*lbs)
1/4-20 UNC 6.7 5.1
5/16-18 UNC 13.9 10.4
3/8-16 UNC 24.7 16.5
7/16-14 UNC 39.4 29.6
1/2-13 UNC 60.3 45.2
5/8-11 UNC 110 80
3/4-10 UNC 212 159
7/8-9 UNC 315 236 425 318
1-8 UNC 472 354 635 477
1-1/8- 7 UNC 633 475 900 675
1-1/4- 7 UNC 900 675 1270 955
1-3/8-8 UN 1660 1245
1-5/8-8 UN 2300
1-3/4-8 UN 2400
Connecting Rod Cap Nuts: Install 5/8”-11 castellated nuts using Loctite® Threadlocker Blue and torque to 150
ft-lbs of torque.
Crosshead Slide Bolts : Install 5/8”-11 bolts using Loctite® Threadlocker Blue and torque to 50 ft-lbs of torque.
Fluid End Plungers : Install FEC0004 pony stud using Loctite® Threadlocker Blue and torque to 360 ft-lbs of
torque. Install plungers using anti-seize compound and torque to 300 ft-lbs of torque.
Note: There is no specified torque for the Fluid End bolts. The indicator in the face measures the preload on
the bolt, torque as necessary to achieve proper readings. MSI strongly recommends using DOW CORNING
G-n Metal Assembly Paste as a lubricant. Other lubricants will damage the bolt threads before required
preload is achieved. Each has a mechanical indicator in the face and should read between 90 and 95 on the
dial. Tighten as necessary, but do not exceed 95 on the dial. If the indicator is not working return it to MSI for
immediate replacement.