Timing gear to fight tooth Analysis _3258 -

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Timing gear to fight tooth Analysis

Electrical fault. Instrument display abnormal,[link widoczny dla zalogowanych], one can diagnose the cause of the malfunction, on the other hand, for the common ammeter, water temperature, oil pressure gauges and other displays large deviations,[link widoczny dla zalogowanych], can initially determine the cause of the white body as instrument malfunction, sensor failure, or some part improper position adjustments. Winter root left in Jiujiang, Jiangxi Agricultural School 4125 series diesel engine is red crawler tractor east main power source. Work to fight tooth and its camshaft gear timing gear chamber causes the other gear teeth to fight the phenomenon is not uncommon. Fight tooth failure occurs, there will be changes in diesel engine valve timing, valve chamber abnormal noise, diesel exhaust smoke weakness and running and so serious, the engine will automatically turn off. Will find that after dismantling the valve push rod bending, arm broken and the camshaft bending deformation or even have bush-burning axle phenomenon. This fault is found in the tractor hydraulic system, and often occurs in overload (or full load) 3z for time. First, the cause of the malfunction 1, camshaft journal and the bush 39 * before * agricultural machinery Hydraulic system, the system will work through the hydraulic pump drive gear drag acting on the camshaft gears meshing with it. If the camshaft journal and its bush before the gap is too large, this force will reduce the radial displacement produced camshaft gear, thereby undermining its normal engagement. Coupled with hydraulic pump driven harder material, resulting in camshaft spalling of gear tooth surface,[link widoczny dla zalogowanych], resulting in fighting gear. 2, hydraulic pump drive gear shaft before and after the timing gear bearing wear or bearing positioning L chamber wall wear, causing the shaft work Kuang move, causing the hydraulic pump drive gear work swing. At work, so that the camshaft gear meshing with tooth Shouli Bu were due to the fighting teeth. 3, severe wear and tear after prolonged use gear tooth surface hardened layer off, lower intensity, larger backlash. Thus, when speed and load mutation, which makes gear by the strong impact, it is easy to fight tooth result. 4, the intermediate gear bushing wear serious, the gap is too large, resulting in the swing Lai asked to play when the gear teeth. 5, gear processing of poor quality, strong enough to fight tooth also contributed to the reasons. Second, determine the method of engine flameout, open the valve chamber cover, crankshaft crank, check the valve clearance. If the valve clearance of a large bend (in the rocker seat bolts and screws are not loose valve clearance adjustment case), then check whether the deformation of rocker, push rod is bent. If the valve rocker arm push rod deformation or bending, indicating that agricultural use of diesel engine maintenance I8 �� J. Jian Wang Xichang City, Sichuan Province, a r Crossroads East One Agricultural Research Institute 615000, clever method starter car: If you lost the key lock for Tractors, a screwdriver or a length of wire can be used directly to take the power terminal and the starter solenoid terminal,[link widoczny dla zalogowanych], so that drive the engine starter motor running. However, this method is only suitable for high temperature season. Second, Qiao Geng straight line: in the tractor cab in front of the glass to draw a vertical line, and then fixed in the tank in front of a vertical wire. Driving, looking for a fixed target in front, so that vertical, wire, and the goal has always been a straight line, you can take the tractor when the valve timing has changed, you can determine the playing gear for the camshaft gear. If the phenomenon can be associated with Burnt axle determined to fight tooth timing gear. Third, the exclusion method 1, failure occurs, check for bent camshaft, camshaft front bearing gap is too large. Camshaft journal on both ends of the middle of the beating of the journal is not greater than the amount required 0.1Omm (mm), this value should be adjusted or replaced. Normal camshaft front bearing and its clearance is 008 ~ 0.16n-~ n, allows to 0.25rrma,[link widoczny dla zalogowanych], more than this value should be replaced. Practice has proved that, when the gap exceeds Q 0.5 (hrma, such as frequent use of the hydraulic system is prone to fight tooth failure. 2, check the hydraulic pump drive gear clearance around the radial asked. Its value should not be greater than 0 .20 ram, or should be replaced with new parts. Check bearing positioning holes for wear, if wear of inlay sleeve patch. 3, check the timing gear chamber surface and wear the gear tooth surface loss or severe wear, it should be replaced with new pieces. 4, check the intermediate gear bushing, to ensure that its normal with the gap. 5, ensure that the replacement parts meet the new standards, quality requirements. Also, for broken or deformed due to arm trouble should be replaced with new parts, bent push rod repair. re-assembled to adjust valve clearance. Fourth, preventive measures 1, the hydraulic pump in use to avoid the impact of bonding, bonding should start. 2, not long when asked to overload the hydraulic system 3. For the long-term use of diesel engine hydraulic system, periodically check the timing gear chamber gear wear.

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