The M40010 Fuller Timing Block Set is a precision transmission timing fixture designed for use with Eaton Fuller RT900 & 1200 Series Roadranger® heavy-duty transmissions. This essential tool set provides front and rear timing blocks that help technicians accurately support and align the countershafts and mainshaft during timing, assembly, and disassembly procedures, ensuring correct gear mesh and timing integrity in the transmission.
As timing is critical for proper engagement and smooth operation in Eaton Fuller transmissions, the M40010 set enables mechanics to center the countershaft and mainshaft safely while working on internal gear components. Proper use of timing blocks helps prevent mis-alignment, accidental gear contact issues, and uneven wear — all of which can lead to transmission noise, premature failure, or difficult shifting if not addressed.
Ideal for fleet service centers, heavy-duty truck repair shops, and transmission rebuild facilities, this set delivers reliable performance with durable construction suitable for frequent professional use.
Key Features & Benefits
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Transmission Specific: Designed specifically for Eaton Fuller RT900 & 1200 Series transmissions, matching OEM timing block requirements.
- Front & Rear Blocks Included: Complete set provides timing support for both front and rear sections of the transmission.
- Accurate Gear Alignment: Helps maintain proper countershaft and mainshaft positioning during timing, improving overall gearbox service quality.
- Professional-Grade Construction: Durable materials and machining allow repeated use in heavy-duty service environments.
- Time & Labor Savings: Reduces set-up time and improves workflow consistency during rebuilds and major transmission repairs.
Typical Applications
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Timing gear set-up and alignment on Eaton Fuller RT900 & 1200 Series transmissions.
- Transmission rebuilds and overhauls requiring precise gear timing and support.
- Professional service shops and heavy-duty truck maintenance facilities.
- Used in combination with other transmission service tools for comprehensive timing procedures.
Why It Matters
Correct gear timing in heavy-duty transmissions like the Eaton Fuller RT900 and 1200 Series is essential for smooth shifting, torque delivery, and long-lasting operation. Improper timing can cause uneven gear engagement, excessive wear, and premature component failure. The M40010 Timing Block Set ensures that technicians can maintain correct gear alignment throughout the service process — improving reliability and reducing the risk of return visits.