TM 5-3810-207-20/TO 36C23-3-37-12
Item
Before starting engine
Paragraph
11
Crane winterization equipment-radiator shutter, batteries, heater control panel, cab
heater, thermostat, defroster, windshield wiper, motor, cab insulation, heater fuel
pumps, lines, and filters, coolant pump, coolant heater safety relief valve, coolant
heater, space and coolant heater igniters, coils, and relays, battery box, thermostat
control, and heater piping. Inspect these items for wear, leaks, damage, breaks,
missing parts, and operation.
Start engine
12
With engine running at normal operating temperature, listen for unusual noises; inspect
cylinder head, manifold, exhaust pipe, muffler, and gaskets for leaks. Check governor
linkage for excessive wear and proper operation under varied loads. Check engine
clutch for proper operation. Inspect fuel and oil lines, hydraulic system, and fuel and
oil filters for leaks. Check all gages, instruments, and controls for proper readings and
operation. Normal gage readings are:
Crane:
Ammeter ...............................................................+0-60 amp
Coolant temperature..............................................180°
F. (Fahrenheit)
Oil pressure...........................................................40-50 psi
Carrier:
Oil pressure warning light ......................................Out, with engine running
Coolant temperature..............................................160-180°
F.
Air pressure...........................................................80-105 psi
Oil pressure...........................................................40-50 psi
Coolant temperature warning light .........................Out, with engine at normal
temperature
Battery generator indicator ....................................In green area
Operational test
13
Engine-during the operational test, notice in particular if the engine has normal power,
proper acceleration in varied speed ranges, tendency to stall. Listen for any unusual
noises when engine is under load. Look for excessive black or blue smoke from
exhaust.
14
Carrier transmission, differentials, transfer case, clutch, and brakes. Check for clutch
braking effect, vibration, and clutch engagement. All forward and reverse speed
ranges. Notice If all shifts are smooth and without vibration or unusual noises. Check
steering mechanism, operating controls, and brakes for proper operation and
adjustment.
15
Check carrier instruments, gages, switches, horn, and lights. Notice if lights are correctly
aimed and securely mounted.
16
Crane master clutch, swing clutch, hoist clutch, boom hoist clutch, crowd and retract
clutches, and brakes. Check for proper engagement, and operation. Notice if clutches
chatter or vibrate excessively. Check brakes under load for proper operation and
adjustment. With crane machinery operating listen for unusual noises in the hoist,
crowd, jack, and swing shafts. Listen for unusual noises in the power transfer case and
chain drives.
After-operational test
17
Temperatures-carrier transmission, differentials, transfer case, clutch housing, crane
clutch housing, power transfer case, bearing housings. Immediately after operational
test, inspect these components for excessive heat. An overheated housing indicates
internal maladjustment, damage, or inadequate lubrication.
18
Leaks-engine oil, fuel, water, hydraulic system, transmission, differentials, transfer
cases, grease seals, and gaskets. Inspect the equipment for fuel, coolant, lubricant,
hydraulic fluid leaks from seals, gaskets, lines, hose connections, radiator, fuel tanks,
or other sources.
19
Check identification plates, paint, and marking for condition and secure mounting.
20
Service and lubricate in accordance with LO 5-3810-207-20.
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