subject: Fl460 Speed Loader And Moment A Brief Analysis Of Common Failures - Loaders, And Moment, Fault - [print this page] A system pressure drop FL460 Variable speed loader moment to work the system pressure between 1.0 ~ 1.6MPa, 1.0MPa when the pressure dropped to below, loader appears unable to work, walking difficulties.
The main reason of such failure is as follows:
(1) hydraulic torque converter transmission oil fails the requirements specification notation, but the free oil hydraulic transmission unqualified endorsement.
(2) and the transmission housing fixed filter dirt, resulting in filter plugging, fuel supply pressure is insufficient.
(3) torque converter of the thrust bearing, thrust ring abnormal wear particles produced by the end of the valve assembly of iron distribution in the valve was catching and causing an internal oil return.
(4) the distribution valve assembly valve stem wear, causing internal pressure relief.
(5) gear group bearing thrust ball bearings and iron produced by the end of abnormal wear particles to distribution valve is catching it back within the oil.
(6) pump assembly of the needle bearing abnormal wear and tear, so that the driven gear during operation to generate a tiny vertical displacement, fuel capacity to change.
(7) pump assembly in the pump body, pump cover and the main, driven gear contact surface wear, oil cavity pressure relief.
Exclude such failures should note the following:
(1) specification of the instruction should be qualified hydraulic transmission oil change, and change in time.
(2) scheduled maintenance or replacement of the filter with the transmission housing fixed.
(3) Converter disintegration point inspection should be performed regularly and timely replacement of bearings and thrust thrust ring.
(4) valve stem assembly can be used coating technique, the drawback is the use of very short, you can also replace the valve assembly.
(5) regularly review the disintegration point of the needle roller bearings and gear thrust bearing, recommended less than an overhaul cycle of replacement. If mandatory, can wear or broken gear teeth abnormalities, resulting in greater economic losses.
(6) pump assembly of the needle roller bearings to be worn in the abnormal change in time. Because of the difficulty in fitting a single purchase, the general replacement of assembly.
(7) pump assembly of the pump body, pump cover and the main, driven gear worn contact surface grinding method commonly used repair, grinding amount not greater than 0.5mm.
2 Oil overheating Block , gear, reverse gear clutch slip is the main cause overheating oil temperature, severe, shell hot oil from the torque converter oil vent.
Torque converter, transmission occurs Overheat for the following reasons:
(1) excessive wear of the friction film, surface lubrication grooves shallow, because of the fuel by reducing heat dissipation effect to worse.
(2) substandard quality of domestic friction plate, leading to premature wear, overheating the oil temperature.
(3) clutch assembly shall be in strict accordance with the provisions in the number of friction plates and steel assembly. If the assembly cost and less convenience or install a friction plate or a piece of steel, although temporary is still available, but the oil temperature can rise.
Exclude such failures should note the following:
(1) do check the disintegration point, the friction plate wear tank depth is not greater than 0.1mm; steel curling roughness not greater than 1mm. If the repair exceeds the limit, should be replaced.
(2) replacement of the original inlet friction disc though expensive, but can ensure compliance with technical requirements of the work of the original machine.
(3) the number of original machine required assembly friction plate and steel sheet.
The front cover 3 and moment transmission junction leakage
Transmission torque converter front cover and the front cover of the junction between the shell is mainly due to oil spills occur: O-ring assembly bumps; Junction screw loose; O-ring inferior quality.
As tedious work of dealing with this leak, the proposed import of the best original assembly O-ring.
4 Guadang difficulties
FL460 Loader does not hang on the block, usually between the distribution valve and the rod horizontal displacement due to a change, mainly due to study the specific wear or adjust the ball head lock cap loose. If the above fails, should adjust the bar examination and adjustment.
