Section IV. TROUBLESHOOTING
2. Each malfunction stated is followed by a list o f
probable causes of the trouble. The corrective
T h i s section provides information useful in
a c t i o n recommended is described opposite the
diagnosing and correcting unsatisfactory operation
or failure of the shop set and its components.
Malfunctions which may occur are listed in table 3-
1. Engine stops suddenly.
Dynamotor-welder overspeed safety
switch trips. (Model SEORLT)
2. Dynamotor-welder noisy.
Tighten or replace hardware.
Loose mounting hardware.
3. Dynamotor-welder will not start
a. Dynamotor switch not properly
when external power source is
b. Power selector switch in wrong
b. Set selector s w i t c h t o C I T Y
c. Power cable disconnected.
a. Circuit breaker tripped.
b. Overload circuit in starter box
Oil level low.
5. Air corn presser overheats.
Service in accordance with L. O. 5-
a. Air hoses, lines or fittings leaking.
b. Air cleaner clogged.
c. Receiver tank drain cock open.
7.Side lifting hydraulic system does
a. Control valve in wrong position.
a . Place control valve in proper
not operate properly.
b. Hydraulic oil supply low.
b. Fill hydraulic oil pump in ac-
cordance with L. O. 5-4940-225-
Section V. MAINTENANCE OF SHOP SET
b. Filter Element Removal and Disassembly.
Refer to figure 3-1 and remove the filter element.
The instructions in this section are published for
c. Cleaning and Inspection.
the information and guidance of the operator to
maintain the shop set.
( 1 ) Clean air cleaner and element with
cleaning solvent and dry thoroughly.
(2) Inspect for rust or corrosion and that air
a. General The air cleaner should be serviced
flows freely through the filter element.
after every 50 hours of operations.