FIFTH WHEEL TROUBLESHOOTING

TM 9-2320-285-24-2

3-29.

TROUBLESHOOTING SYMPTOM INDEX (CONT)

Para/Malfunction Page

Seat binds, or does not, slide smoothly, when adjusted

backward or forward

.......................................................................................

3-32/4

3-298

Weight adjustment handle feels loose, has no tension ...............................................

3-32/5

3-298

Seat or back cushions are separating from pans ........................................................

3-32/6

3-299

Seat has collapsed

.......................................................................................

3-32/7

3-299

Door sticks, or will not open or close ...........................................................................

3-32/8

3-299

Door window will not raise or lower, or will not travel

smoothly

.......................................................................................

3-32/9

3-300

Right side or rear window will not close fully ...............................................................

3-32/10

3-300

Right side or rear window will not slide or will not

slide smoothly

.......................................................................................

3-32/11

3-301

Cab drafty

.......................................................................................

3-32/12

3-301

Cab vibrates excessively

.......................................................................................

3-32/13

3-301

3-30.

FIFTH WHEEL TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

FIFTH WHEEL JAWS DON'T OPEN

Step 1.

Check if secondary lock handle is out (unlocked position).

If secondary lock handle is in (locked position), pull hair pin clip from secondary lock handle, pull

secondary lock handle out, and reinsert hair pin clip outside fifth wheel plate (prevents secondary lock

handle from returning to locked position).

If secondary lock handle is out (unlocked position), proceed to step 2 below.

Step 2.

Pull out fifth wheel trip rod fully while watching fifth wheel jaws.

If fifth wheel jaws open, proceed to step 4 below.

If fifth wheel jaws don't open, proceed to step 3 below.

Step 3.

Check if fifth wheel jaws are adequately lubricated. Inspect fifth wheel jaw spring.

If fifth wheel jaws are not adequately lubricated, lubricate (para 2-63d).

If fifth wheel jaw spring is broken, replace (para 3-33c).

If fifth wheel jaws are adequately lubricated and fifth wheel jaw spring is not broken, disassemble fifth

wheel jaw components and replace as required (para 3-33c).

3-295