b. Cleaning and Inspection.
(4) Remove the cap screws (60) and lock washers
(1) Clean the fenders with a pressure water hose
(61) and remove the spring bumper (62) from the
or with steam-cleaning equipment. If necessary,
remove greasy or gummy deposits with dry cleaning
b. Cleaning and Inspection.
solvent (fed. spec. P-D-680).
(1) Steam-clean the spring.
(2) Inspect the fenders for cracks, distortion,
broken weldments, loose wheel chock mounting
Do not flush the spring with solvents.
bracket, and other damage. Straighten a bent fender
and reweld cracked weldments. Replace a badly
between spring leaves, decreasing the
effectiveness of the springs.
c. lnstallation. Install the fender as shown in
(2) Inspect the spring for broken leaves, cracks or
missing retainers, and loss of normal curvature,
Replace if defective.
(22) in the brackets on the fenders.
(3) Replace the wear pad. Inspect all other parts
for cracks, distortion, damaged threads, and other
damage; replace damaged parts.
a. Checkout. Checkout of the shock absorbers is
c. Installation. Installation is the reverse of the
most easily accomplished while they are mounted on
removal procedure. Refer to items 48 through 62 of
the vehicle. Proceed as follows:
(1) Alternately apply and release force on the
jacks so that the weight of the unit rests on the
frame to cause the unit to rock on its springs. The
springs. Check that the unit rides easily and rocks
rocking must stop immediately when force is no
properly when force is alternately applied and
longer applied. Continued rocking indicates faulty
released on the frame.
(2) Check the shock absorbers for leaks, worn
mounting holes, loss of resilience of rubber bushings,
dents, and other damage.
(3) If defective, replace shock absorbers per sub-
(1) Use the landing gear crank to raise the lan-
paragraph b below.
ding gear (66, fig. 4-27) to its fully extended position
and apply blocking under the front of the towbar.
Crank the landing gear to the fully retracted
washers (36 and 39), and flat washers (37 and 40);
remove the shock absorbers (41) from the studs (45
(2) Remove the nut (63) and two washers (64 and
and 46) on the frame and axle. Remove the flat
65) that secure the landing gear to the tube welded on
the towbar, while supporting the weight of the land-
washers (42) from the axle-mounted studs.
ing gear. Remove the landing gear,
(2) Check the studs for distortion, damaged
threads, wear, and other damage. Replace if defec-
(3) Refer a defective landing gear to direct sup-
port maintenance for repair.
(3) Install new shock absorbers by reversing the
b. Installation. Installation is the reverse of
removal procedure. After installation, check the
operation of the shock absorbers per subparagraph a
After installation, check that the landing gear
4-72. Miscellaneous Frame Parts
(1) Jack up and block under the trailer frame to
relieve the weight of the axle against the spring.
(1) Remove the lunette (5) from the towbar of the
trailer by removing slotted nut (3) and flat washer
(49), and lock washers (50) that secure the keeper
(4). Remove the towing safety chains (10) by
plates (51) and spacer (52) to the axle. Remove the
removing cap screws (6), nuts (7), lock washers (8),
keeper plates and spacer, Remove the wear pad (53)
and flat washers (9).
from the axle.
(2) Unscrew the lifting eyes (11) from the trailer
frame and remove retaining clips (14) by removing
(3) Support the weight of the spring (59) with a
hoist. Remove the four lock nuts (54), nuts (55), and
lock washers (56) from the two U-bolts (57). Remove
the U-bolts and spring clamp (58) and remove the
trailer frame by removing screws (15), nuts (16), lock
spring assembly (59).
washers (17), and flat washers (18).