TM 5-3810-207-20/TO 36C23-3-37-12
Section III. PREVENTIVE MAINTENANCE SERVICES
organizational maintenance personnel at quarterly
intervals. A quarterly interval is equivalent to three
calendar months, or 250 hours of operation, whichever
The preventive maintenance procedures to be
performed at quarterly intervals are listed consecutively
(starting with number 1) and are described in paragraph
20. Noticed deficiencies will be recorded on DA Form
Detailed instructions for applicable
maintenance service and inspection
procedures are referenced by the
paragraph numbers listed.
Lubrication shall be as prescribed in LO 5-3810-
20. Quarterly Organizational Maintenance Procedures
Before starting engine
Pintle hook, outriggers, outrigger floats, wheels and tires, roller path and hook rollers,
spare wheel, steering valve, steering arm, tie rods, steering cylinder, and steering
knuckles. Inspect these items for wear, cracks, damage, missing parts, leaks, and
adjustment. Normal tire pressure is 80 psi. Correct clearance between hook rollers
and roller path is 0.036 inch.
Carrier fuel tank, fuel lines, headlights, taillights, marker lights, boom cradle, carrier
engine air cleaner, front axle assembly, differentials, drive shafts, universal joints,
carrier frame. Inspect the items for leaks, cracks, wear, damage, and missing parts.
Carrier radiator, hose, fan, fan guard, shroud, fan belts, generator belt, hydraulic steering
pump belt, air compressor belts, water pump, thermostat housing. Inspect these items
for breaks, wear, damage, missing parts, and adjustment. Carrier fan, generator,
compressor, and steering pump belt deflections are 3/4 to 1 inch midway between
The three fan drive belts must be replaced as a set.
Check carrier fire extinguisher, engine oil level, fuel tank level, transmission, transfer
case and differential lubricating oil levels. Winterization equipment-radiator shutter,
space heater, heater control panel, cab heater thermostat, heater fuel pump, coolant
pump, coolant heater safety relief valve, coolant heater, coolant lines, space and
coolant heater igniters, coils, relays, battery box thermostat control. Inspect and check
winterization equipment for breaks, wear, missing parts, leaks, and operation.
Carrier cab assembly-cab door, windshield, windows, back glass, seat and frame, toolbox
and tools, floorboards and mats, windshield wiper, blade, and arm. Inspect these
items for breaks, wear, leaks, missing parts, and cleanliness.
Crane cab, doors, glass, cab panels, gantry, frame, toolbox and tools, operator's seat and
frame, control levers, pedals, guards, machinery side frames. Inspect these items for
breaks, wear, leaks, missing parts and cleanliness.
Crane engine, radiator, hose, lines, fittings, thermostat housing, water pump, fan, fan belts, TM 5-3810-207-10
fan guard and shroud, generator belt. Inspect these items for leaks, breaks, wear,
missing parts, and adjustment. Fan and generator belt deflection is 1/4 to 1/2 inch
deflection between pulleys.
Boom hoist brake, hoist brake, swing brake, crowd brake, boom hoist clutch, hoist clutch,
swing clutches, crowd and retract clutches, master clutch. Inspect these items for
wear, breaks, damage, and adjustment.
Check engine oil level, boom hoist power-down lubricating oil level, power transfer
gearcase lubricating oil level, hydraulic control cylinders oil level. Inspect the items for
breaks, leaks, and damage.
Hoist shaft, crowd shaft, horizontal swing shaft, vertical swing shaft, jack-shaft, bevel
pinions, drive chains, jaw clutches, linkage and pins. Inspect these items for wear,
breaks, damage, and adjustment.