Mack Truck MAXITORQUE TRANSMISSIONS T313–T318(L)(LR)(21)(L21)(LR21) Service Manual(10-123) – PDF DOWNLOAD
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Mack Truck MAXITORQUE TRANSMISSIONS T313–T318(L)(LR)(21)(L21)(LR21) Service Manual(10-123) – PDF DOWNLOAD
Language : English
Pages : 268
Downloadable : Yes
File Type : PDF
Size: 22.9 MB
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Mack Truck MAXITORQUE TRANSMISSIONS T313–T318(L)(LR)(21)(L21)(LR21) Service Manual(10-123) – PDF DOWNLOAD
INTRODUCTION
Mack Trucks, Inc. cannot anticipate every possible occurrence that may involve a potential hazard. Accidents can be avoided by recognizing potentially hazardous situations and taking necessary precautions. Performing service procedures correctly is critical to technician safety and safe, reliable vehicle operation.
The following list of general shop safety practices can help technicians avoid potentially hazardous situations and reduce the risk of personal injury. DO NOT perform any services, maintenance procedures or lubrications until this manual has been read and understood.
- Perform all service work on a flat, level surface. Block wheels to prevent vehicle from rolling.
- DO NOT wear loose-fitting or torn clothing. Remove any jewelry before servicing vehicle.
- ALWAYS wear safety glasses and protective shoes. Avoid injury by being aware of sharp corners and jagged edges.
- Use hoists or jacks to lift or move heavy objects.
- NEVER run engine indoors unless exhaust fumes are adequately vented to the outside.
- Be aware of hot surfaces. Allow engine to cool sufficiently before performing any service or tests in the vicinity of the engine.
- Keep work area clean and orderly. Clean up any spilled oil, grease, fuel, hydraulic fluid, etc.
- Only use tools that are in good condition, and always use accurately calibrated torque wrenches to tighten all fasteners to specified torques. In instances where procedures require the use of special tools which are designed for a specific purpose, use only in the manner described in the instructions.
- Do not store natural gas powered vehicles indoors for an extended period of time (overnight) without first removing the fuel.
- Never smoke around a natural gas powered vehicle.
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
Mack Truck MAXITORQUE TRANSMISSIONS T313–T318(L)(LR)(21)(L21)(LR21) Service Manual(10-123) – PDF DOWNLOAD
INTRODUCTION 1
SAFETY INFORMATION 2
Advisory Labels 2
Service Procedures and Tool Usage 3
EXPLANATION OF NUMERICAL CODE 5
CONVERSION CHART 6
VISUAL IDENTIFICATION 9
TRANSMISSION IDENTIFICATION 10
Unit Identification Stamping Location 10
DESCRIPTION AND OPERATION 17
DESCRIPTION AND OPERATION 18
T313–T318(L)(LR)(21)(L21)(LR21) Transmissions 18
Lubrication 19
T313 Series Gear Ratios and Shift Pattern 21
T318 Series Gear Ratios and Shift Pattern 22
T313(L)(LR)(21)(L21)(LR21) Shifting Instructions 23
T318(L)(LR)(21)(L21)(LR21) Shifting Instructions 24
Guidelines for PTO Use 26
T313 Power Flow Diagrams 27
T318 Power Flow Diagrams 30
COMPONENT LOCATOR 35
TRANSMISSION MAJOR COMPONENT LOCATIONS 36
TROUBLESHOOTING 41
TROUBLESHOOTING CHARTS 42
MAINTENANCE 45
TRANSMISSION MAINTENANCE 46
Checking Oil Level 46
Changing Oil 47
Magnetic Oil Filter Plug 48
Air Breather(s) 48
REPAIR INSTRUCTIONS 49
TRANSMISSION DISASSEMBLY PROCEDURES 50
TRANSMISSION COMPONENT DISASSEMBLY 69
Main Case Shift Cover Disassembly 69
Rear Case Shift Cover Disassembly 84
Three-Position Range Shift Cylinder Disassembly (Compound Neutralizing) 86
Two-Position Range Shift Cylinder Disassembly (Compound Non-Neutralizing) 89
Range Shift Valve 90
Main Drive Pinion Disassembly 92
Front Mainshaft Disassembly 95
Rear Mainshaft (Output Shaft) and Synchronizer Disassembly 103
Rear Mainshaft Bearing Cover Disassembly: T313–T318(L)(LR) 115
Rear Output Housing Disassembly: T313–T318(21)(L21)(LR21) 117
Front Countershaft Front Bearing Cover Disassembly 118
Front Countershaft Disassembly 119
Front Countershaft Rear Bearing Cover Disassembly 122
Rear Countershaft Disassembly 123
Rear Countershaft Bearing Cover Disassembly 124
Reverse Idler Gear Disassembly 125
TABLE OF CONTENTS
Page v
INSPECTION OF PARTS 126
Inspection and Cleaning 126
Bearings 126
Gears 126
Shifter Forks, Sliding Clutches and Shift Rails 126
Oil Seals 127
General Inspection 128
General Reassembly Instructions 128
TRANSMISSION COMPONENT REASSEMBLY 129
Reverse Idler Gear Reassembly 129
Rear Countershaft Bearing Cover Reassembly 130
Rear Countershaft Reassembly 131
Front Countershaft Rear Bearing Cover Reassembly 133
Front Countershaft Reassembly 134
Front Countershaft Front Bearing Cover Reassembly 139
Rear Mainshaft Bearing Cover Reassembly: T313–T318(L)(LR) 140
Rear Output Housing Reassembly: T313–T318(21)(L21)(LR21) 142
Rear Mainshaft (Output Shaft) and Synchronizer Reassembly 145
Front Mainshaft Reassembly 159
Main Drive Pinion Reassembly 168
Range Shift Valve 171
Two-Position Range Shift Cylinder Reassembly (Compound Non-Neutralizing) 173
Three-Position Range Shift Cylinder Reassembly (Compound Neutralizing) 178
Rear Case Shift Cover Reassembly 181
Main Case Shift Cover Reassembly 184
TRANSMISSION REASSEMBLY PROCEDURES 198
SPECIFICATIONS 223
TRANSMISSION SPECIFICATIONS 224
Torque Specifications, T313–T318(L)(LR) 224
Torque Specifications, T313–T318(21)(L21)(LR21) 226
Gear Identification, T313–T318(21) 228
Gear Identification, T313–T318(L)(LR) 230
Gear Identification, T313–T318(L21)(LR21) 232
Fits and Limits 234
General Tolerances, T313–T318(L)(LR) 235
General Tolerances, T313–T318(21)(L21)(LR21) 236
Transmission Specifications and Capacities 237
SCHEMATIC & ROUTING DIAGRAMS 239
AIR PIPING DIAGRAMS 240
T313–T318(L)(LR)(21)(L21)(LR21) Air Control without Compound Neutralizing for
PTO Operation 240
T313–T318(L)(LR)(21)(L21)(LR21) Air Control with Compound
Neutralizing for PTO Operation 242
SPECIAL TOOLS & EQUIPMENT 245
SPECIAL TOOLS 246
DISASSEMBLED VIEWS 247
TRANSMISSION DISASSEMBLED VIEWS 248
INDEX 257
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