TM 5-3990-263-13&P
0038
WELDING - Continued
Winch Frame Structure - Continued
should be repaired before it reaches 1.0 inch (25.4 mm) in length. The combined length of multiple cracks in
cap plate joints should not exceed 2.0 inches (50.8 mm).
7.
Sheave Housing Outside Gusset Plates to Base Plate (Figure 4, Item 7). These welds join outside gusset
plates to sheave housing base plate. Sound welds in these joints are necessary to ensure safe handling of
bridge bays. A crack should be repaired before it reaches 1.0 inch (25.4 mm) in length. The combined length
of multiple cracks in any one gusset plate joint should not exceed 2.0 inches (50.8 mm).
8.
Sheave Housing Hook Housing Saddle Plates and Supports (Figure 4, Item 8). These welds join winch rope
hook housing saddle stop plates and support bars to sheave housing side plates. Sound welds in these joints
are necessary to ensure safe handling of bridge bays. A crack should be repaired before it reaches 1.0 inch
(25.4 mm) in length. The combined length of multiple cracks should not exceed 1.5 inches (38.1 mm).
Weld Joint/Joint Materials
1.
Welding on BAP must be performed when BAP has been removed from vehicle or PLS trailer and bridge bay
load has been removed. Different areas of BAP require different weld electrodes.
2.
Use guidelines given in Table 5-2 to determine correct weld.
Table 1.
Weld Joint Materials
Joint Materials
Weld Joint
Main Frame Structure
1. A-Frame to Main Rails
ASTM A500, GR B to ASTM A572, GR
50 to ASTM A656, GR 80, TY7
2. Winch Frame Lower Lock Pin to A-
ASTM A331, GR 41L40 to ASTM A500,
Frame
GR B
3. Winch Frame Upper Pin Saddle Plate
ASTM A572, GR 5 to ASTM A500, GR
to A-Frame
B
4. Front Lock Outrigger Tubes to Main
ASTM A500, GR B to ASTM A656, GR
Rails
80, TY7
5. Front Roller Outrigger Tubes to Both
ASTM A500, GR B to ASTM A656, GR
Main Rails
80, TY7
6. Front Main Rails to Rear Main Rails
ASTM A656, GR 80, TY7 to ASTM
A588, GR A or to ASTM A656, GR 80,
TY7
7. Rear Holding Locks
ASTM A352, GR LCB to ASTM A656,
GR 80, TY7
8. Center Roller Crossmember to Main
ASTM A656, GR 80, TY7 to ASTM
Rails
A588, GR A or to ASTM A656, GR 80,
TY7
03/15/2011Rel(1.8)root(maintwp)wpno(M02176)
