BUSHING 8E9176 - Caterpillar

Standard Bolt Torque
____________________Note: The torques in the following tables are based on metric Grade 10.9 or higher fasteners (SAE Grade 8 or higher fasteners). Use hardened washers. Split lock washers are not permitted.
If bolts are removed from the CX31 transmission to add mounting brackets, etc. they must be replaced with longer bolts so that thread engagement is maintained. The replacement bolts must be of the same grade and torqued to the required specifications.Thread engagement length and bolt torques are critical on the Aluminum Case and Cover of the CX Transmissions. The bolts selected for aluminum threaded bores must have a thread engagement length of twice the bolt diameter. Standard torques on short bolts will strip the threads. The bolts must not be too long because the bolts will bottom out and damage the case.
Table 19
Inch Nuts and Bolts    
Thread Size
Inch    Standard Torque    
1/4    
12 3 N m (9 2 lb ft)    
5/16    
25 6 N m (18 4 lb ft)    
3/8    
47 9 N m (35 7 lb ft)    
7/16    
70 15 N m (50 11 lb ft)    
1/2    
105 20 N m (75 15 lb ft)    
9/16    
160 30 N m (120 22 lb ft)    
5/8    
215 40 N m (160 30 lb ft)    
3/4    
370 50 N m (275 37 lb ft)    
7/8    
620 80 N m (460 60 lb ft)    
1    
900 100 N m (660 75 lb ft)    
1 1/8    
1300 150 N m (960 110 lb ft)    
1 1/4    
1800 200 N m (1320 150 lb ft)    
1 3/8    
2400 300 N m (1780 220 lb ft)    
1 1/2    
3100 350 N m (2280 260 lb ft)    
Table 20
Metric Nuts and Bolts    
Thread Size
Metric    Standard Torque    
M6    
12 3 N m (9 2 lb ft)    
M8    
28 7 N m (21 5 lb ft)    
M10    
55 10 N m (41 7 lb ft)    
M12    
100 20 N m (75 15 lb ft)    
M14    
160 30 N m (120 22 lb ft)    
M16    
240 40 N m (175 30 lb ft)    
M20    
460 60 N m (340 44 lb ft)    
M24    
800 100 N m (590 75 lb ft)    
M30    
1600 200 N m (1180 150 lb ft)    
M36    
2700 300 N m (2000 220 lb ft)    Ambient Temperatures
Illustration 69 g01283117
Installation Checklists
The attached Checklist is a basic OEM review form. It does not cover all possible design and installation errors that may occur.