Allison 3000 / 3500 / 3700 Series Automatic Transmission Service Manual PDF
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Factory-authored Allison 3000, 3500, and 3700 Series Transmission Service Manual (SM2148EN) covering complete overhaul, diagnostics, and maintenance procedures. Includes torque specs, hydraulic schematics, clutch rebuild data, and electrical troubleshooting. Ideal for heavy-duty truck, bus, and motorhome service centers.
Description
Allison 3000 / 3500 / 3700 Series Automatic Transmission Service Manual – SM2148EN PDF Download
IMAGES:
1️⃣ General Information
Scope and Organization of Manual
Transmission Models Covered (3000/3500/3700 Series)
Identification Plates and Model Designation Codes
Major Modules and Unique Features
Diagnostic Procedures and Fault Code Display (ECU/WTEC III)
Preservation & Storage Guidelines
Operating Instructions and Specifications
2️⃣ Preventive Maintenance
Periodic Inspection & Fluid Care
Fluid Level Check (Manual & Electronic OLS Methods)
Hot & Cold Check Procedures
Recommended Fluids and Filter Change Intervals
Contamination Diagnosis (Water, Coolant, Metal)
Output Flange and Seal Maintenance
Transmission Stall Test & Cool-Down Check
Fluid Leak Diagnosis and Repair
3️⃣ General Overhaul Information
Special Tools and Shop Equipment
Cleaning, Inspection, and Handling Practices
Replacement Parts and Ordering Guidelines
Torque Specifications and Spring Data
Transmission Removal & Installation Procedures
4️⃣ Transmission Disassembly
Preparation and Repair Stand Mounting
Removal of External Components & Modules
Speed Sensor, Oil Cooler, PTO & Retarder Removal
Torque Converter and Main Shaft Disassembly
Housing and Planetary Gear Separation
5️⃣ Module Rebuild
Torque Converter and Housing Modules
Front Support and Oil Pump Modules
Rotating Clutch Assemblies (C3/C4/C5)
Planetary Modules (P1 – P4)
Retarder and Scavenge Pump Overhaul
Transfer Case Module (C6/C7 Clutch Assembly)
Control Valve Module and Solenoid Bodies
6️⃣ Transmission Assembly
Clutch and Planetary Module Installation
Retarder and Rear Cover Reassembly
Converter Housing & Control Module Fitment
PTO and Oil Cooler Installation
Final Alignment and Testing
7️⃣ Wear Limits & Spring Data
Dimensional Tolerances for Bearings, Bushings, and Gears
Spring Testing and Replacement Data
8️⃣ Customer Service Information
Owner Assistance Procedures
Service Literature and Support Documentation
Product Description
The Allison Transmission 3000 / 3500 / 3700 Series Service Manual (SM2148EN) is the official, factory-approved guide from Allison Transmission Inc., covering all automatic transmission models in the 3000 Product Family.
This PDF provides step-by-step overhaul, preventive maintenance, and electronic diagnostics for both WTEC II and WTEC III control systems.
🧠 Technical Coverage
Comprehensive disassembly and assembly procedures with exploded diagrams
Hydraulic schematics for fluid circuits and valve body operation
Diagnostic trouble codes with shift selector interpretation
Torque converter, retarder, and PTO module servicing instructions
Pressure testing and stall test guidelines
Detailed clutch wear limits, spring specifications, and torque data
🚛 Applicable Models
Includes all vocational, bus, and special-duty transmissions, such as:
3000 EVS / RDS / MH / PTS / TRV / HS variants
3500 EVS / RDS / MH / SP models
3700 SP and MD 3070PT with transfer case
Earlier MD 3060 / 3066 / 3560 models
⚙️ Why This Manual Matters
This manual ensures accurate rebuilds, repairs, and calibration for Allison’s world-renowned automatic gearboxes found in trucks, buses, motorhomes, and emergency vehicles.
It provides factory torque specs, wear tolerances, and hydraulic schematics, making it indispensable for professional service shops and DIY mechanics alike.
✅ Features
Original factory service procedures with illustrated diagrams
Step-by-step module rebuild coverage
Preventive maintenance and fluid change procedures
Electrical and hydraulic system diagnostics
WTEC II & III troubleshooting codes
High-resolution cross-section and foldout drawings
📦 Benefits
Reduces downtime with accurate diagnostics
Extends transmission life through proper maintenance
Saves repair costs by enabling self-service capability
Perfect for fleet owners, workshops, and Allison-certified technicians
📘 File Details
| Parameter | Description |
|---|---|
| Document Title | Allison Transmission 3000 Product Family Service Manual |
| Publication No. | SM2148EN |
| Revision | December 2006 (Rev. 1) |
| Manufacturer | Allison Transmission, Inc. |
| Models Covered | 3000 EVS, 3500 EVS, 3000 HS, 3500 HS, 3000 MH, 3500 MH, 3000 RDS, 3500 RDS, 3000 PTS, 3000 TRV, 3200 TRV, 3200 SP, 3500 SP, 3700 SP, B 300, B 400, T 250–T 375, MD 3060/3066/3560/3070PT series |
| Transmission Family | Allison 3000 / 3500 / 3700 Automatic Transmissions |
| Type | Fully automatic, electronic 6-speed / 7-speed gearboxes |
| Applications | Highway, Rugged Duty, Emergency Vehicle, Motorhome, Bus, Transit, Specialty, and Pupil Transport |
| Torque Converter Models | TC 411 / 413 / 415 / 417 / 418 / 419 / 421 |
| ECU System | Allison WTEC II / WTEC III Electronic Control Units |
| Transmission Weights | 243 – 530 kg (depending on PTO and retarder configuration) |
| Optional Equipment | Integral retarder, PTO provision, transfer case, deep or shallow sumps |
| File Format | Searchable PDF |
| Language | English |
| Pages | ~217 pages with foldouts and illustrations |
| Contains | Overhaul procedures, torque specs, wear limits, hydraulic schematics, diagnostic codes |
| Ideal For | Fleet mechanics, bus/truck technicians, Allison-certified repair centers |
