TM
55-2320-260-15-1
Table
5-4.
Application o f Materials
for
Blocking a n d T i e d o w n of Typical M809-Series T r u c k o n S e m i t r a i l e r
Item
No. required
Application
A
6
Chock block (detail 1, item A, fig 5-3). Locate 33 portion against front of front wheels and against
rear of rear outside wheels. Drive block securely under wheels with sledge hammer.
B
4
Chain, general service, S-leg, alloy steel, 1/4- to 1/2-in size, 10 ft length, with two grabhooks. Pass
one end of chain through tiedown shackles at each end of vehicle and engage grabhooke on con-
venient chain link. Pass other end of chains through stake pockets on same side of semitrailer
forming a 45 angle.
Pass one end of chain around lifting pin located between intermediate and rear wheels and through
2
nearest stake pocket.
C
6
Load binder, lever operated, 4-in take-up, with two grabhooke designed for 1/4- or 1/2-in chain.
Engage one grabhook into link of chain coming from vehicle securement points. Pull chain through
stake pocket and engage other grabhook into a convenient link. Pull lever down, and lock into
secured position. A piece of pipe may be required to depress lever in locking position to insure
sufficient depression on vehicle tires.
5-9