TM-9-2520-238-34

• DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR RIGHT ANGLE DRIVE, COOLING FAN M113A1 FOV, M113A2 FOV -- 2990-00-712-1280 M113A3 FOV -- 3010-01-318-5670
• WARNING SUMMARY
• WARNING SUMMARY-continued
• LIST OF EFFECTIVE PAGES / WORK PACKAGES
• REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS
• TABLE OF CONTENTS
• TABLE OF CONTENTS-continued
• HOW TO USE THIS MANUAL
• DEFINITION OF WP TERMS
• HOW TO USE THE REPAIR PARTS AND SPECIAL TOOLS LISTS (RPSTL) WITH THIS MANUAL
• CHAPTER 1. INTRODUCTORY INFORMATION WITH THEORY OF OPERATION
• GENERAL INFORMATION
• Table 1. TABLE 11: COMPONENTS COVERED AND END ITEM APPLICATION-continued
• REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR)
• DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE
• EQUIPMENT DESCRIPTION AND DATA
• TRANSFER GEARCASES
• CONFIGURATIONS
• TRANSFER GEARCASE A
• TRANSFER GEARCASE B AND C
• TRANSFER GEARCASE F
• DIFFERENTIAL RIGHT ANGLE GEARBOX
• OPERATION
• CARRIER MOVING TO LEFT WITH LEFT STEERING BRAKE APPLIED
• CARRIER MOVING TO RIGHT WITH RIGHT STEERING BRAKE APPLIED
• REPAIR FINAL DRIVE ASSEMBLIES
• LOCATION AND DESCRIPTIONS OF MAJOR COMPONENTS
• REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT
• CHAPTER 2. TROUBLESHOOTING PROCEDURES
• INTRODUCTION TO HOW TO USE TROUBLESHOOTING
• Locating the Correct Troubleshooting Procedure
• Finding the Right Troubleshooting Procedure
• Finding the Right Troubleshooting Procedure-continued
• Finding the Right Troubleshooting Procedure-continued
• MALFUNCTION/SYMPTOM INDEX WP
• COOLING FAN RIGHT ANGLE DRIVE LEAKS OIL
• COOLING FAN RIGHT ANGLE DRIVE BINDS OR MAKES GRINDING NOISE
• TRANSFER GEARCASE LEAKS OIL
• TRANSFER GEARCASE LEAKS OIL-continued
• DIFFERENTIAL MAKES EXCESSIVE NOISE OR VIBRATES WHILE TURNING
• DIFFERENTIAL MAKES EXCESSIVE NOISE OR VIBRATES WHILE TURNING-continued
• DIFFERENTIAL MAKES EXCESSIVE NOISE OR VIBRATES WHILE MOVING
• DIFFERENTIAL MAKES EXCESSIVE NOISE OR VIBRATES WHILE MOVING-continued
• FINAL DRIVE BINDS OR MAKES GRINDING NOISE
• FINAL DRIVE LEAKS OIL
• FINAL DRIVE HAS WATER INSIDE
• CHAPTER 3. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS FOR PMCS INCLUDING LUBRICATION PROCEDURES
• PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING LUBRICATION INSTRUCTIONS
• TORQUING
• TORQUE WRENCH ADAPTERS AND CONVERSION FORMULA.
• CLEANING
• CLEANING INSTRUCTIONS
• BALL BEARINGS
• INSPECTION
• REPAIR
• OIL/GREASE SEALS
• FLUID LEAKS AND CHECKING FOR LEAKS
• CHAPTER 4. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS FOR REPAIR COOLING FAN RIGHT ANGLE DRIVES
• REPAIR COOLING FAN RIGHT ANGLE DRIVES A AND B
• DISASSEMBLY
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• CLEAN, INSPECT, AND REPAIR
• ASSEMBLY-continued
• ASSEMBLY-continued
• ASSEMBLY-continued
• Schematic Drawing
• Install cartridge assembly
• Assemble spindle assembly
• Determine thickness of shim
• Determine initial thickness of shim
• Check and adjust backlash
• Install new encased oil seal
• Install spindle assembly
• WEAR LIMITS
• Table 1. COOLING FAN RIGHT ANGLE DRIVES A AND B WEAR LIMITS
• REPAIR COOLING FAN RIGHT ANGLE DRIVE C (M113A3 FOV ONLY)
• DISASSEMBLY
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• CLEAN, INSPECT, AND REPAIR
• ASSEMBLY
• Assemble spindle assembly
• Determine thickness of shim
• Determine thickness of shim
• Assemble cartridge assembly
• Determine thickness of shim
• Install spindle assembly
• Install new oil seal
• Install bearing retainer plate
• Check and adjust backlash between gears
• Preserve drive
• WEAR LIMITS
• Table 1. COOLING FAN RIGHT ANGLE DRIVE C WEAR LIMITS
• CHAPTER 5. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS FOR REPAIR TRANSFER GEARCASES
• REPAIR TRANSFER GEARCASES A, B, AND C
• DISASSEMBLY
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• CLEAN, INSPECT, AND REPAIR
• ASSEMBLY
• Schematic Drawing
• Assemble helical gearshaft cluster
• Install housing cover
• Install new encased oil seal
• Insert engine disconnect actuator
• Determine thickness of new laminated shim
• Secure retaining plate
• Install generator drive assembly
• Assemble and install filler neck
• Position hydraulic pump with attached bracket
• Lift transfer gearcase A, B, or C
• RUN-IN TEST
• WEAR LIMITS
• Table 2. TRANSFER GEARCASES A, B, AND C WEAR LIMITS
• Table 2. TRANSFER GEARCASES A, B, AND C WEAR LIMITS-continued
• REPLACE TRANSFER GEARCASE A, B, OR C WITH SERVICE SPARE TRANSFER GEARCASE E
• DISASSEMBLY
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• DISASSEMBLY-continued
• ASSEMBLY
• ASSEMBLY-continued
• ASSEMBLY-continued
• ASSEMBLY-continued
• REPAIR TRANSFER GEARCASE F
• DISASSEMBLY
• DISASSEMBLY-continued
• Straighten tabs on four key washers
• Remove cotter pin
• Straighten tabs on four key washers
• Straighten tabs on four key washers
• Straighten tabs on key washer
• Install four jack screws
• Remove helical gearshaft cluster
• CLEAN, INSPECT AND REPAIR
• ASSEMBLY
• ASSEMBLY-continued
• Clean threads of cap screws
• Lubricate new packing
• Secure disk assembly
• Removed from gearcase F
• Determine thickness of laminated shims
• Install retaining plate
• Lubricate new packing
• Clean mating surface of encased oil seal
• Install resilient mount
• Lubricate new packing
• RUN-IN TEST
• WEAR LIMITS
• Table 2. TRANSFER GEARCASE F WEAR LIMITS
• CHAPTER 6. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS FOR REPAIR FINAL DRIVE ASSEMBLIES
• REPAIR FINAL DRIVE ASSEMBLIES A AND B
• DISASSEMBLY
• Remove 14 lock bolts
• Remove retaining ring
• Straighten tabs on eight key washers
• CLEANING
• ASSEMBLY
• Install new encased oil seal
• Apply a light coat of antiseize compound
• Install retaining ring
• Install spur gear
• Clean mating surface of oil seal
• RUN-IN TEST
• WEAR LIMITS
• Table 2. FINAL DRIVE A AND B WEAR LIMITS
• CHAPTER 7. DIRECT/GENERAL SUPPORT MAINTENANCE INSTRUCTIONS FOR STEERING CONTROL DIFFERENTIAL
• REPLACE STRAIGHT ADAPTER AND BRAKE SHOE ASSEMBLIES
• REMOVAL
• Straighten tabs on 13 key washers
• Disconnect two nonmetallic hoses
• INSTALLATION
• Install housing cover
• Apply a thin even coat of sealing compound
• REPAIR BRAKE SHOE ASSEMBLIES
• DISASSEMBLY
• Remove steering brake adjusting nut
• CLEANING
• ASSEMBLY
• Install brake shoe
• Install pipe plug
• WEAR LIMITS
• Table 1. BRAKE SHOE ASSEMBLIES WEAR LIMITS
• REPLACE OUTPUT SHAFT ASSEMBLIES
• REMOVAL
• CLEANING
• INSTALLATION
• Install adapter
• REPAIR OUTPUT SHAFT ASSEMBLIES
• DISASSEMBLY
• Remove piston ring
• Select drill with same diameter
• Straighten tabs on four key washers
• CLEANING
• ASSEMBLY
• Install oil seal
• Install new key washer
• Install oil seal
• Install shoulder bolt
• Install retainer
• WEAR LIMITS
• Table 1. LEFT AND RIGHT OUTPUT SHAFT ASSEMBLIES WEAR LIMITS
• REPLACE DIFFERENTIAL STEERING CONTROL ASSEMBLY
• REMOVAL
• CLEANING
• INSTALLATION
• REPAIR DIFFERENTIAL STEERING CONTROL ASSEMBLY
• DISASSEMBLY
• Remove ball bearing
• Remove six cotter pins
• CLEANING
• ASSEMBLY
• Install new straight pin
• Insert spur gear shaft
• Install brake flange assembly
• Install brake drum hub
• Install sleeve bearing
• WEAR LIMITS
• Table 1. DIFFERENTIAL STEERING CONTROL ASSEMBLY WEAR LIMITS
• REPLACE DIFFERENTIAL RIGHT ANGLE GEARBOX
• REMOVAL
• INSTALLATION
• REPAIR DIFFERENTIAL RIGHT ANGLE GEARBOX
• DISASSEMBLY
• Remove laminated shim
• Bend tabs on eight key washers
• Remove packing
• Remove bevel gear
• Remove bearings
• CLEAN, INSPECT, AND REPAIR
• ASSEMBLY
• Install cup
• Install ring spacer
• Lubricate new packing
• Place oil seal retainer
• Remove two cap screws
• Install ball bearing
• Clean threads of eight cap screws
• Lubricate four cap screws
• Place peeled shim
• Lubricate two cap screws
• Remove four cap screws
• WEAR LIMITS
• Table 1. DIFFERENTIAL RIGHT ANGLE GEARBOX WEAR LIMITS
• REPAIR STEERING CONTROL DIFFERENTIAL HOUSING
• DISASSEMBLY
• CLEANING
• ASSEMBLY
• WEAR LIMITS
• Table 1. STEERING CONTROL DIFFERENTIAL HOUSING WEAR LIMITS
• CHAPTER 8. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS FOR REPAIR SINGLE DISK PIVOT STEER BRAKE AND HYDRAULIC MASTER BRAKE CYLINDER
• REPAIR SINGLE DISK PIVOT STEER BRAKE ASSEMBLY
• DISASSEMBLY
• Remove release unit nut
• Remove retaining ring
• CLEANING
• ASSEMBLY
• Lubricate new packing
• REPAIR HYDRAULIC MASTER BRAKE CYLINDER
• DISASSEMBLY
• Remove gasket
• Remove end plug
• ASSEMBLY
• Install new end plug seal
• Schematic Drawing
• SET RELIEF VALVE PRESSURE
• Schematic Drawing
• CHAPTER 9. SUPPORTING INFORMATION
• REFERENCES
• FIELD MANUALS
• FORMS
• COMMON TOOLS AND SUPPLEMENTS AND SPECIAL TOOLS/FIXTURES LIST
• Table 1. Tool Identification List-continued
• Table 1. Tool Identification List-continued
• FABRICATED TOOLS
• Right Angle Drive C Test Stand (top plate)
• Right angle Drive C Test Stand (bottom plate)
• Right angle Drive C Test Stand (Side and End View)
• Right angle Drive C Test Stand (Assembled)
• EXPENDABLE/DURABLE SUPPLIES AND MATERIALS LIST
• Table 1. Expendable and Durable Items List
• INDEX
• INDEX-continued
• METRIC CONVERSION CHART
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• RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS
• DISTRIBUTION
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