This Eaton Fuller transmission rebuild manual, publication TRSM0525 dated October 2007, is the full service and overhaul guide for Fuller heavy-duty 10- and 15-speed gearboxes, including the RTO-14615. Its 142 pages walk through disassembly, inspection, reassembly, and both the range and deep-reduction air systems.
Official document details
| Brand | Eaton Fuller |
| Model coverage | RT and RTO 10- and 15-speed (incl. RTO-14615) |
| System | Service and overhaul manual |
| Publication no. | TRSM0525 |
| Year | October 2007 |
| Pages | 142 |
| File size | 3.9 MB |
| Format | |
| Language | English |
Document table of contents
- Model designations and specifications
- Lubrication
- Operation and power flow
- Torque recommendations and tool reference
- Disassembly
- Inspection
- Reassembly and changing the input shaft
- Range shift and deep-reduction air systems
- Shifting controls and shift bar housing
- Auxiliary and front section procedures
Applicable transmission models
The manual covers 10-speed on-highway models (RT-11610 through RTO-14610) and 15-speed on/off-highway models (RT-11615 through RTO-15615), with gear ratios, weights, and oil capacities listed by model. For spec-ing or service assistance the publisher lists 1-800-826-HELP; confirm current procedures on the official Eaton website.
Eaton Fuller transmission rebuild steps
The overhaul flow removes the companion flange, auxiliary section, and clutch housing, then disassembles the front section, main drive gear, and countershafts. Inspection covers bearings and bearing covers, sliding clutches and yoke slots, synchronizer blocker pins and contact surfaces, and every O-ring for cracks or distortion. Reassembly calls for new gaskets throughout, a fresh nylon collar that must never be reused, and Fuller silicone lubricant 71206 and adhesive sealant 71205 on valve seats and threads. The manual also details timing and installation of the auxiliary countershaft assemblies so the deep-reduction and range gearing engage correctly.
Who needs this Eaton Fuller transmission rebuild guide
Transmission rebuilders and heavy-truck driveline shops use this manual to overhaul a Fuller gearbox to specification, following the correct disassembly, timing, and torque sequence instead of working from memory. Because the same book covers both 10-speed and 15-speed models, a shop can service most of the RT and RTO range from one reference and avoid mixing up range-shift and deep-reduction air-system routing.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
Applies to these truck models
This is the manufacturer document shared across 2 model families. It applies to:
- Cummins
- RTO-14615 service manual.pdf Chung
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