TM 5-4220-233-14
d.
Parking
(1) When parking for extended periods, set the handbrakes on both towing vehicle and Servicing Unit.
(2) If the towing vehicle and Servicing Unit are parked on a hill with a slope greater than 5% grade,
chock wheels and lower the three swivel jacks.
e.
Uncoupling Trailer from Towing Vehicle
Figure 2-4. Uncoupling Trailer from Towing Vehicle.
(1) Fully engage the handbrake (1) and place chock blocks (2) according to the slope.
(2) Disconnect intervehicular cable (3) from towing vehicle receptacle and stow on Servicing Unit.
(3) Disconnect safety chains (4) from towing vehicle eyebolts and stow on Servicing Unit.
(4) Disconnect the emergency brake chain (5) from the towing vehicle and stow on Servicing Unit.
(5) Rotate all three swivel jacks (6) downward.
(6) Lower swivel jack sandshoes (7) until they contact ground.
(7) Remove pintle lockpin (8) and open pintle (9), continue lowering the front swivel jack (6) until the
lunette eye (10) disengages from the pintle.
(8) Move towing vehicle a safe distance from trailer.
(9) Using the circular levels (11) as a guide, readjust position of all three jacks (6), as necessary to
level the Servicing Unit.
(10) Perform all After PMCS in Table 2-1.
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