TM 5-3810-294-34
CHAPTER 19
REPAIR OF WIRING HARNESS AND CARRIER FRAME
Section I. REPAIR-WIRING HARNESSES
leads. Using an ohmmeter to determine electrical
19-1. Description
lead continuity will facilitate harness removal.
There are three major wiring harnesses that
b. Remove clamps which secure wiring harness
distribute the electrical power throughout the
and remove harness from carriers.
carrier electrical system: (11 Cab wiring harness,
19-3. Installation
(21 frame wiring harness, and (3) engine wiring
harness. Battery cables and jumper wires are not
a. Neatly position and route wiring harness.
considered parts of wiring harnesses. Complete
b. Install cable clamps to hold wiring harness in
wiring harnesses should not be removed unless
place.
many electrical leads have been damaged. Refer to
c. Refer to TM 5-3810-294-20 and properly
TM 5-3810-294-20 for wiring harness repair.
connect electrical leads. Use an ohmmeter to
continuity check electrical leads, thus ensuring
19-2. Removal
correct lead connection.
a. Refer to schematic diagram in TM 5-3810-
294-20 to locate termination points of electrical
Section II. REPAIR OF CARRIER FRAME
19-4. Description
19-6. Cleaning, Inspection, and Repair
The welded frame is machined for the roller path
a. Clean frame with live steam.
upon which the crane (revolving frame) rides. It
b. Inspect for cracks or breaks in the frame.
carries the revolving frame and supports the cab
Repair cracks or breaks by welding. Be sure
assembly, engine, transmission, transfer case, and
strength of weld is sufficient to support weight of
their connecting units. The frame is carried on the
carrier part and / or assembly. Refer to chapter 2
front axle assembly and tandem rear axle assembly
for special welding instructions.
c. Replace frame if damage is beyond weld
19-5. Removal
repair.
Refer to other chapters and sections of this manual
19-7. Installation
and TM 5-3810-294-20 to remove parts and
assemblies necessary to allow frame repair or
Refer to other chapters and sections of this manual
replacement. Frame replacement should not be
and TM 5-3810-294-20 to reinstall parts and
done unless damage is beyond repair.
assemblies removed for frame repair or
replacement.
19-1
