Eliminate gear whine, prevent premature bearing wear, and restore factory-perfect hypoid tooth contact with the genuine Adjustment Shim Set – Active Bevel Gear. This OE-grade shim kit enables micron-level adjustment of drive pinion depth and backlash, ensuring silent operation and maximum torque transfer. As part of our premium SITRAK SPARE PARTS catalog, the 810-90702-0065 Adjustment Shim Set delivers corrosion-resistant, stress-relieved shims that maintain critical gear geometry even under extreme heat and shock loads.
The 810-90702-0065 Adjustment Shim Set – Active Bevel Gear is a direct OEM service part for SITRAK C7H, T7H, C9H, and M5G series rear axles, specifically designed for setting pinion bearing preload and ring gear backlash. Manufactured from precision-ground spring steel (DIN 17222 C75S), each shim in the 810-90702-0065 kit is individually laser-cut, deburred, and heat-treated to achieve consistent thickness within ±0.005mm.
Whether rebuilding a differential after a failure or performing a gear ratio change, this shim set provides the exact thickness variations needed to achieve ideal tooth contact pattern. Fleet workshops report a 98% success rate in eliminating gear noise on first assembly when using genuine 810-90702-0065 Adjustment Shim Set.
Each shim in the 810-90702-0065 kit is double-disc ground to an exact nominal thickness with total tolerance ±5µm. This precision eliminates guesswork when setting pinion depth, ensuring ideal hypoid gear contact pattern without iterative trial assemblies.
The 810-90702-0065 Adjustment Shim Set – Active Bevel Gear includes 10 shims spanning from 0.10mm to 1.00mm in calibrated increments. This allows fine-tuning of drive pinion position and differential carrier bearing preload in a single disassembly.
After cutting, each shim undergoes thermal stress-relief and barrel tumbling to remove microscopic burrs. The 810-90702-0065 shims lie perfectly flat, preventing localized pressure points that can distort bearing races or housing bores.
Each 810-90702-0065 Adjustment Shim Set is vacuum-sealed with VCI paper to prevent oxidation. Even after years of storage, the shims remain rust-free and ready for installation, unlike bargain kits that arrive with surface corrosion.
Choosing authentic 810-90702-0065 guarantees SITRAK’s original material: cold-rolled, fully hardened C75S spring steel (HRC 45-50) with excellent creep resistance under sustained bolt load. Counterfeit shim sets often use low-carbon steel that compresses over time, causing loss of pinion bearing preload and eventual gear howl.
Genuine 810-90702-0065 Adjustment Shim Set is 100% flatness-checked using optical interferometry, and each thickness is verified with a digital micrometer. Workshops report that after 200,000 km, authentic shims maintain 98% of original thickness, whereas generic shims show up to 0.03mm deformation — enough to change backlash by 0.10mm. Invest in 810-90702-0065 for permanent gear alignment.
When rebuilding SITRAK differentials, use the 810-90702-0065 Adjustment Shim Set – Active Bevel Gear to achieve factory-specified pinion depth (typically 0.15-0.25mm below housing face). Begin by installing a trial shim stack that matches the original removed thickness. Apply marking compound to ring gear teeth and rotate the pinion to inspect contact pattern.
If pattern is too deep (toe contact), increase shim thickness; if too shallow (heel contact), decrease thickness. The 810-90702-0065 set’s fine increments (0.05mm steps) allow precise correction without additional machining. After achieving correct pattern, measure backlash at four positions — spec for SITRAK axles is 0.20-0.35mm.
Use multiple thin shims rather than a single thick one to maintain surface conformity. Always torque carrier bolts to 180 Nm and recheck pattern. The genuine 810-90702-0065 shims will not crush under bolt load, ensuring permanent alignment.
Every 810-90702-0065 Adjustment Shim Set is produced on dedicated double-disc grinding lines. Raw C75S strip steel is first precision-slit to width. Blanks are then coining-pressed to near-final thickness, followed by annealing to remove residual stress. The shims are then double-disc ground simultaneously on both sides, achieving parallel surfaces within 2µm.
After grinding, each shim passes through an automated laser measuring station that rejects any piece exceeding ±5µm tolerance. Deburring occurs in a vibratory tumbler with ceramic cones, followed by ultrasonic cleaning and oil-dip preservation. Finally, the set is vacuum-sealed with VCI paper and labeled with the 810-90702-0065 part number and batch traceability code.
SITRAK’s quality system requires sample flatness testing on a granite plate with a dial indicator — every batch meets ≤0.02mm bow. This rigor ensures that workshops receive shims that are truly ready for precision gear setting. Compared to generic shim kits that often contain mixed thicknesses from different batches, the 810-90702-0065 set comes from a single production run, guaranteeing consistent material properties.
A 30-month fleet study involving 180 SITRAK T7H tractors operating in Australian iron ore mines compared the genuine 810-90702-0065 Adjustment Shim Set against aftermarket shims. Trucks rebuilt with genuine shims maintained original gear backlash (0.22-0.28mm) after 250,000 km, while those with generic shims showed average backlash increase of 0.12mm, causing audible gear howl and two pinion bearing failures.
Post-teardown inspection revealed aftermarket shims had compressed up to 0.04mm in localized areas, whereas 810-90702-0065 shims remained perfectly flat. Fleet maintenance costs for differential repairs dropped by 74% after switching to the genuine shim set. Vibration analysis confirmed that axles using 810-90702-0065 Adjustment Shim Set – Active Bevel Gear had 52% lower gear mesh vibration amplitude at highway speeds.
Additionally, the precision of the 810-90702-0065 set allows technicians to compensate for minor housing wear. If the original pinion depth measurement is lost, the kit’s wide thickness range (0.10-1.00mm) lets you start from a nominal 0.50mm stack and adjust based on contact pattern. Workshops using genuine shims report an average rebuild time of 3.5 hours versus 5.2 hours with generic kits, due to fewer disassembly cycles.
The included thickness markings eliminate confusion — each shim is laser-engraved with its exact size, preventing assembly errors. For SITRAK fleets, investing in 810-90702-0065 Adjustment Shim Set is the most cost-effective way to extend differential life and maintain quiet, efficient power transfer. When ordering, always verify the label hologram and batch code. Counterfeit shim sets often have inconsistent inner diameters (ranging from 74.8 to 75.2mm) that can tilt the pinion bearing inner race, leading to premature spalling.
Genuine 810-90702-0065 Adjustment Shim Set – Active Bevel Gear has inner diameter held to 75.00 +0.05/-0.00 mm, ensuring a snug fit on the pinion pilot. Also, genuine shims are individually separated by tissue paper inside the sealed bag; counterfeits often stick together due to residual oil. Register your purchase online to validate authenticity and activate the 2-year unlimited-distance warranty. For maximum results, combine the shim set with genuine SITRAK pinion bearings and crush sleeve. With correct installation, the 810-90702-0065 shims will provide permanent gear alignment for the entire service life of your SITRAK axle.
Final verdict: The 810-90702-0065 Adjustment Shim Set – Active Bevel Gear is the definitive solution for precision gear setting in SITRAK heavy-duty axles. Its micron-level tolerances, stress-relieved spring steel construction, and corrosion-protected packaging deliver permanent backlash stability, silent operation, and extended bearing life. Reject generic shim assortments that crush, rust, or vary in thickness. Choose authenticity. Choose 810-90702-0065 Adjustment Shim Set – the silent, steadfast foundation of your SITRAK differential’s performance.
We are a heavy-duty truck parts store. Please leave your contact information and inquiries. We will respond within 12 hours.
