Original SANY Pipe Assembly Coolant 169900000122A Construction Machinery Parts

The genuine SANY parts reference 169900000122A is the Pipe Assembly, Coolant, a pre‑formed hose assembly that carries engine coolant between the radiator, water pump, and cylinder block in SANY heavy‑duty diesel engines. The 169900000122A coolant pipe assembly is constructed from high‑temperature EPDM rubber with textile reinforcement and crimped steel end fittings, ensuring leak‑free coolant circulation under extreme thermal and pressure cycles.

Designed to withstand continuous operating temperatures up to 120°C and burst pressures exceeding 15 bar, this hose assembly resists degradation from coolant additives and external contaminants. Each 169900000122A unit is 100% pressure‑tested and dimensionally verified for SRT dump trucks, SY excavators, SW wheel loaders, and motor graders.

Pipe Assembly, Coolant

Трубопровод охлаждающей жидкости в сборе

Conjunto de tubería de refrigerante

Pipe Assembly, Coolant

Трубопровод охлаждающей жидкости в сборе

Conjunto de tubería de refrigerante

Pipe Assembly, Coolant

Трубопровод охлаждающей жидкости в сборе

Conjunto de tubería de refrigerante

Material and Design of Pipe Assembly, Coolant 169900000122A

The coolant pipe assembly 169900000122A is manufactured from high‑grade EPDM (ethylene‑propylene‑diene monomer) rubber, reinforced with one layer of braided textile (polyester) for pressure resistance. The inner tube is smooth to minimize flow restriction, and the outer cover is ozone and weather resistant. The hose has a nominal internal diameter of 32 mm and a wall thickness of 4.5 mm.

The end fittings are seamless steel tubes (ST37.0) with a barbed profile, crimped onto the hose using a hydraulic press. The fittings are zinc‑nickel plated (8-12 µm) to resist rust from coolant and road salt. Each fitting is engraved with the part number 169900000122A and a batch code. The assembly is formed to a specific 3D shape using a CNC mandrel bender, with an overall length of 580 mm and three bends (45°, 90°, and 30°).

The assembly is designed to connect the water pump outlet to the cylinder block inlet on SANY D09/D12 engines. It is also used as the radiator lower hose on some models. The EPDM rubber is compatible with ethylene glycol‑based coolants and withstands continuous operating temperatures of -40°C to +120°C, with short‑term peaks of 150°C.

All 169900000122A assemblies are 100% pressure‑tested at 3 bar for 60 seconds (no leakage) and then burst‑tested to a minimum of 15 bar on a sample basis. Dimensional verification is performed on a CMM fixture. A batch number printed on the hose provides traceability to the rubber batch, fitting lot, and assembly date.

Function of Coolant Pipe Assembly 169900000122A in Engine Cooling

The coolant pipe assembly 169900000122A is a critical link in the engine’s cooling circuit. It transports hot coolant from the engine block to the radiator for heat dissipation, and returns cooled coolant to the water pump. A leak or rupture in this hose can cause rapid coolant loss, leading to engine overheating, warped cylinder heads, and catastrophic failure.

The reinforced EPDM construction resists swelling from coolant additives and maintains flexibility over thousands of thermal cycles. The crimped steel fittings ensure a leak‑proof connection under vibration. The hose is also resistant to oil and fuel, preventing external contamination from engine leaks. Regular inspection and replacement (every 5 years or 8,000 hours) is recommended.

On SANY D09/D12 engines, this specific hose is located on the left side of the engine, between the water pump and the oil cooler housing. It is often removed during water pump replacement or coolant flush services. Always use a new genuine 169900000122A hose when replacing the water pump or performing major cooling system work.

Compatible SANY Models & Engine Applications

The coolant pipe assembly 169900000122A is used on SANY D07, D09, and D12 series diesel engines. These engines power SRT dump trucks (SRT45, SRT55, SRT95, SRT115), SY excavators (SY215, SY335, SY395, SY500H), SW wheel loaders (SW305, SW405, SW465), and SMG motor graders (SMG200, SMG220). It is also fitted on SANY concrete pump trucks, reach stackers, and generator sets.

The hose fits specific coolant ports: one end has a 32 mm ID crimped fitting for the water pump outlet, the other end has a 32 mm ID fitting for the cylinder block inlet. The hose length is 580 mm with a 180 mm offset. Always verify the original hose shape and length. For other engine models (D06), a different hose assembly is used.

For fleet maintenance, stock genuine 169900000122A hoses. Aftermarket hoses often use lower‑grade rubber (e.g., SBR) that cracks within 2 years or have incorrect bend angles, causing kinking and restricted flow. Genuine SANY hoses guarantee the correct EPDM compound, reinforcement, and dimensional accuracy.

Technical Specifications – Pipe Assembly, Coolant 169900000122A

Proper Installation of Coolant Pipe Assembly 169900000122A

Before installing the hose assembly 169900000122A, drain the cooling system and remove the old hose. Clean the fittings on the water pump and cylinder block with a wire brush. Inspect the fittings for corrosion or pitting – replace if damaged. Lubricate the inside of the hose ends and the barbed fittings with clean coolant or silicone lubricant (do not use oil or grease).

Slide the hose onto the fittings until it bottoms out against the stop. Install spring clamps or constant‑tension clamps (not supplied) over the barbed sections. Position the clamps 2‑3 mm from the end of the hose. Tighten worm‑drive clamps to 5 Nm, or use factory‑specified constant‑tension clamps. Do not over‑tighten, as this can cut the hose.

Refill the cooling system with the correct coolant mixture and run the engine to operating temperature. Check for leaks at both connections and along the hose body. If leaks are present, re‑position the clamps or tighten slightly. Never use sealants or tape on the hose barbs. Replace the hose if it shows any cracking or swelling.

Store new hoses in a cool, dry place away from UV light and ozone (electric motors). Shelf life is 5 years. Always use genuine SANY hoses – aftermarket hoses may have incorrect bend angles or inferior rubber that fails prematurely.

Symptoms of a Failed Coolant Pipe Assembly 169900000122A

A failed 169900000122A hose will show visible coolant leaks at the fittings or along the hose body. You may see dried coolant residue (white or green crust) around the connections. The engine may overheat under load, and the coolant level will drop without visible external leaks if the hose is cracked but not dripping (steam loss).

If the hose is swollen or soft to the touch, it has been contaminated by oil or fuel – replace immediately. If the outer cover has cracks (ozone cracking) or the fabric reinforcement is visible, the hose is near failure. A bulging hose indicates internal delamination and requires urgent replacement. A burst hose will cause sudden steam and rapid coolant loss, leading to engine damage if not shut down.

During preventive maintenance, inspect the hose for hardness, cracks, and clamp tightness. Replace the hose every 5 years or 8,000 hours, even if it looks good. EPDM rubber degrades over time. Use only genuine SANY hoses for replacement.

Quality Assurance & Full Traceability for 169900000122A

Every coolant pipe assembly 169900000122A is manufactured in an IATF 16949 certified facility. The rubber compound is tested for tensile strength (min 10 MPa), elongation (min 300%), and heat aging (120°C for 168h, no cracks). The textile reinforcement is pull‑tested. The steel fittings are tested for plating thickness and adhesion.

Each assembly is 100% pressure‑tested at 3 bar for 60 seconds with no leakage. A sample from each batch is burst‑tested to 15 bar minimum. The hose is also subjected to impulse testing (100,000 cycles at 2.5 bar, 120°C). A batch number printed on the hose provides traceability to rubber batch, fitting lot, and assembly date.

For bulk orders, SANY provides a Certificate of Conformance (CoC) confirming that all 169900000122A hoses meet material, dimensional, and pressure specifications. Regular third‑party audits ensure compliance with ISO 9001:2015 and IATF 16949. Use only genuine SANY hoses for guaranteed cooling system reliability.

Field Performance of Genuine SANY Coolant Hose

Field data from SANY equipment operating in Australian mines and Indonesian plantations shows that genuine 169900000122A hoses last the full 5‑year or 8,000‑hour service interval without leaks or cracks. The EPDM rubber resists hardening and ozone cracking, and the zinc‑nickel plated fittings remain corrosion‑free.

Aftermarket hoses often fail within 2 years due to low‑quality rubber (SBR or natural rubber) that hardens and cracks. Their fittings may be plain steel without plating, leading to rust and coolant leakage. Genuine SANY hoses eliminate these failures. Fleet owners report 90% fewer cooling system leaks after switching to genuine hoses.

To maximize service life, replace the hose at the recommended interval. Use only genuine SANY hoses and clamps. Inspect the hose at every oil change for signs of cracking or swelling. Following these practices prevents overheating and engine damage.