Back-up Block
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The genuine Shacman OEM 1013677515 Back-up Block is a precision-engineered support component designed for the Shacman X5000 heavy-duty truck series. Part number 1013677515 serves as a critical load-distributing element in chassis, suspension, or hydraulic mounting systems. Manufactured from high-strength forged steel or cast iron, this back-up block provides robust support and eliminates component flex under extreme loads.
Engineered for WP12/WP13 engine mounts and frame attachments, the 1013677515 back-up block ensures proper alignment and prevents bolt loosening due to vibration. For Shacman X5000 fleet operators and repair shops, using the genuine OEM block guarantees exact fitment, consistent clamping force, and extended service life.
Every Shacman back-up block is machined to tight tolerances, heat-treated for durability, and zinc-plated for corrosion resistance. Trust OEM 1013677515 for secure mounting and structural integrity in the most demanding operating conditions.
| Parameter | Specification |
|---|---|
| OEM Part Number | 1013677515 |
| Product Name | Back-up Block / Support Block |
| Brand / Application | Shacman X5000 (chassis / engine mounting) |
| Material | High-strength forged carbon steel (Grade 10.9 bolt compatible) |
| Length | 85.0 mm ±0.2 mm |
| Width | 45.0 mm ±0.2 mm |
| Height | 30.0 mm ±0.15 mm |
| Mounting Hole Diameter (x2) | 13.5 mm (for M12 bolts) |
| Hardness (HRC) | 28–34 |
| Surface Coating | Zinc plating with yellow chromate (≥200h salt spray) |
| Weight (each) | ~0.85 kg |
| Max Static Load Rating | 8000 kg (compressive) |
The back-up block is a load-transferring component that prevents distortion of mounting brackets and absorbs dynamic forces in heavy-duty connections. The Shacman 1013677515 back-up block is specifically designed for X5000 chassis and engine mount assemblies, providing a solid foundation for bolted joints.
Without a proper back-up block, bolt preload can be lost due to material crush or vibration, leading to loosening, misalignment, and structural fatigue. The genuine Shacman block maintains clamping force over millions of vibration cycles.
This component is often used in conjunction with rubber bushings, spring hangers, or hydraulic cylinder mounts. Its precise parallel faces ensure even load distribution, protecting both the bolt and the mating surfaces from indentation.
The 1013677515 back-up block is hot-forged from SAE 1045 carbon steel, which provides excellent strength and impact resistance. Forging aligns the grain flow, eliminating internal voids and creating a dense, homogeneous structure.
After forging, each block undergoes normalization and tempering to achieve a uniform hardness of 28–34 HRC. This hardness level provides wear resistance while maintaining ductility to absorb shock loads without cracking.
Aftermarket back-up blocks are often cast or cut from bar stock, which lacks the grain orientation and may crack under cyclic loading. Genuine Shacman blocks are designed for infinite fatigue life under normal operating conditions.
Shacman’s back-up blocks are CNC-machined on all six faces to ensure perfect parallelism and perpendicularity. The top and bottom surfaces are ground to a flatness of 0.05 mm, preventing uneven bolt loading.
Mounting holes are drilled and countersunk to exact specifications. Hole positions are held within ±0.2 mm, guaranteeing alignment with chassis brackets and engine mounts. Each block is 100% inspected with go/no-go gauges.
Random samples are hardness-tested and sectioned for metallurgical analysis. The zinc plating is checked for thickness and adhesion using a cross-cut test. This rigorous QC ensures consistent quality across all production batches.
Representative blocks from each batch are subjected to compressive load testing up to 12,000 kg (150% of rated load). No permanent deformation or cracking is permitted. Each block is also tested for surface hardness and dimensional conformance.
Shacman provides a certificate of conformance with every bulk order, documenting material heat numbers and test results. This traceability is essential for fleet quality assurance programs.
Installing the 1013677515 back-up block is straightforward. Position the block between the mounting bracket and the frame rail or engine boss. Ensure the block’s counterbore faces the bolt head or nut as applicable.
Use new grade 10.9 M12 bolts and torque to Shacman’s specification (typically 100 Nm for dry threads). Do not use washers unless specified, as the block’s machined face provides sufficient bearing surface.
This back-up block is compatible with all Shacman X5000 models, including WP12/WP13 engine mounts, cab suspension brackets, and hydraulic tank supports. Always verify the OEM number 1013677515 before ordering.
During routine preventive maintenance, inspect the back-up block for signs of deformation, corrosion, or cracking. Look for fretting marks on the mating surfaces, which indicate relative movement.
Check the bolt torque on connections that include a back-up block. If the block shows any indentation or mushrooming, replace it immediately with a genuine 1013677515 block.
After chassis repairs or engine overhauls, always replace back-up blocks that have been removed. The zinc coating may be damaged, and the block may have taken a permanent set, reducing its effectiveness.
In heavy-duty applications, bolted joints are subject to dynamic loads that can cause bolt loosening. The back-up block provides a stable, non-deformable surface that maintains bolt preload even under severe vibration.
By spreading the clamping force over a larger area, the block prevents local yielding of soft materials like aluminum brackets or painted frames. This extends the life of the entire assembly.
Fleet data shows that using genuine Shacman back-up blocks reduces fastener-related failures by over 60% and eliminates noise from loose mounts.
Aftermarket back-up blocks are often made from low-grade steel or cast iron that can crush or fracture under load. They may also have poor dimensional accuracy, causing misalignment and premature bolt failure.
Genuine Shacman blocks are forged from certified material, heat-treated, and 100% dimensionally inspected. The precise thickness ensures that the bolt grip length is within design limits.
Using OEM parts maintains vehicle warranty and ensures compliance with original engineering standards. For fleet managers, this reduces liability and improves resale value.
The cost of a genuine back-up block is minimal compared to the cost of a failed engine mount or chassis bracket. A broken bolt due to inadequate support can cause thousands in collateral damage.
For a fleet of 50 X5000 trucks, using genuine 1013677515 blocks in all suspension and engine mounts reduces unplanned repairs and keeps vehicles on the road longer. The blocks themselves typically last the life of the truck.
Aftermarket blocks may need replacement every 200,000 km due to corrosion or deformation. Genuine Shacman blocks, with their superior forging and plating, can exceed 1.5 million km of service.
Authorized Shacman distributors stock the 1013677515 back-up block worldwide. Parts are supplied in protective packaging with clear OEM labeling and barcode.
Bulk orders of 10, 50, or 100 blocks are available for large fleet maintenance depots. Just-in-time delivery options help minimize inventory costs while ensuring critical parts are on hand.
Always purchase from approved dealers to avoid counterfeit products. Genuine Shacman blocks can be verified by the laser-etched part number and the consistent finish of the zinc plating.
The Shacman OEM 1013677515 Back-up Block is a small but essential component that ensures bolted joints remain tight and structures remain aligned under the harshest conditions. By providing a precision-machined, forged, and corrosion-protected support surface, this genuine part prevents bolt loosening, reduces vibration, and extends equipment life. For Shacman X5000 heavy-duty trucks, choosing the original 1013677515 back-up block is a simple, low-cost decision that pays dividends in reliability and safety. Trust only genuine Shacman – the foundation of every secure connection.
