Section VI. MAINTENANCE PROCEDURES
2-39. MAINTENANCE INTRODUCTION.
This section provides general procedures to be followed for the Unit Maintenance level as specified in the
Maintenance Allocation Chart (MAC). When a special procedure is used, the detailed procedure will be in the section
covering that component.
2-40. GROUND HANDLING.
Towing. Two towing eyes are located at front and two located at rear of truck.
Parking. Parking brakes are designed to hold vehicle GVW on a minimum of 7-9 percent grade, pointing
either uphill or downhill per Federal Motor Carrier Safety Regulation 393.41.
Mooring and Transport. For forward, aft, lateral and upward movements, truck has four tiedown rings. Refer
to TM 9-2320-364-10 for mooring condition and tiedown locations.
Hoisting. Sling assembles and towing eyes used for hoisting are found on the truck
2-41. GENERAL REMOVAL INSTRUCTIONS.
Work Required. Remove parts if repair or replacement is required. Do not disassemble a component any
further than needed.
Preparation. Before removal of any electrical, hydraulic, or air system components, ensure system component
is not energized or pressurized. Disconnect battery ground cables, on those trucks equipped with a battery disconnect
switch, the switch may be used to disconnect batteries. Relieve air system pressure. Before removal of fasteners (nuts,
locknuts). Remove any paint on threads to prevent binding of fastener.
Identification. To ease assembly and installation, tag and mark shims, connectors, wires and mating ends of
lines before disconnecting them. Identify similar parts to ensure correct assembly.
Position of Valves. Before removing valve handles, mark or diagram their positions when open and closed.
This will help during assembly.
Tire Removal. Before removing any tires, position jackstands under axles, walking beams or frame. See Figure
2-82 through 2-84 for proper jackstand placement. This will secure the truck for safe tire removal.
Location. Before removing cable ties, cushion clamps, hoses, tubing, wiring etc., note the location, position and
routing to ensure correct assembly.