CYLINDER BLOCK AS 5647688 - Caterpillar

Illustration 1 g01848733
(1) Bulkhead connector
(1A) Bulkhead nut Note: The bulkhead connector may have different connections. The type of fluid connection does not affect the torque for nut (1A).Note: When you assemble the fluid connection, do not use the bulkhead nut (1A) as leverage for a backup wrench. Use the hex on the body (1) of the connector for leverage.
Table 1
Thread Size
Inch Torque for O-ring Face Bulkhead Nuts
9/16 45 7 N m (33 5 lb ft)
11/16 80 12 N m (59 9 lb ft)
13/16 100 15 N m (74 11 lb ft)
1 130 20 N m (96 15 lb ft)
1 3/16 180 27 N m (133 20 lb ft)
1 7/16 350 53 N m (258 39 lb ft)
1 11/16 420 63 N m (310 46 lb ft)
2 500 75 N m (369 55 lb ft)
Table 2
Thread Size
Inch Torque for 37 degree Flare Bulkhead Nuts
5/16 13 2 N m (115 18 lb in)
3/8 17 3 N m (150 27 lb in)
7/16 30 5 N m (266 44 lb in)
1/2 35 5 N m (26 4 lb ft)
9/16 40 6 N m (30 4 lb ft)
3/4 70 11 N m (52 8 lb ft)
7/8 100 15 N m (74 11 lb ft)
1 1/16 160 24 N m (118 18 lb ft)
1 3/16 180 27 N m (132 20 lb ft)
1 5/16 260 39 N m (192 29 lb ft)
1 5/8 350 53 N m (258 39 lb ft)
1 7/8 400 60 N m (295 44 lb ft)
2 1/2 500 75 N m (369 55 lb ft)