First remove the pump from the equipment to be repaired. Use the pump disassembly procedure from the manufacturer. Use appropriate equipment and adhere to safety procedures as confirmed by the manufacturer.
Attach the pump to the demolition or table for disassembly (the pivot part is below) (Figure 3.47 left). With sharp metal scratching apparatus, a pencil or magic marker (special markers), draw a line / mark on the pump from the port end cover to the end shaft cover . This line will work to flatten the components when you re-assemble them. Remove the cover bolts and washer on a single unit or threaded rod on multiple units (Figure 3.47 right).
Remove the end cover port and thrust plate by inserting a screwdriver or push rod (Figure 3.48 left). Make sure you do not scratch the surface of the engine. Thrust plate and roller bearings remain inside the end cover port when released as shown in Figure 3.48 on the right. Remove the thrust plate and check for wear (wear).
Lift the housing gear carefully so as not to damage the surface of the engine (Figure 3.49 left). Use a screwdriver or pusher if necessary. Remove the drive gear and idler gear carefully so as not to damage the surface of the machine (Figure 3.49 right). Keep gear united. You have to re-assemble it in pairs because the gear works simultaneously.
In the multiple section unit , disconnect the carrier bearing (Figure 3.50 left). Use a screwdriver or pusher if necessary. Make sure you do not damage the surface of the machine. In the multiple section unit , remove the connecting shaft (Figure 3.50 right).
Lift the gear housing carefully so as not to damage the surface of the machine (Figure 3.51 left). Use a screwdriver or pusher if necessary. Remove the drive and idler gear from the shaft cover carefully so as not to damage the surface of the machine (Figure 3.51 right). Keep gear united. You must install the drive and idler gear back in pairs, as both work together.
Remove the thrust plate and check if it has experienced severe wear (Figure 3.52 left). Bearing must remain on its cover . If not, or if removable by hand, remove the end cover port . Check the thrust plate if you are wearing or are slippery. If you plan to change the bearing , reverse the end cover port and release the snap ring on the bearing shaft (figure 3.52 right).
Note: Wear safety glasses when handling snap rings.
Remove the bearing shaft from the end cover port with the appropriate equipment (Figure 3.53 left). Try not to damage the seal bearing . Use the bearing drag to pull the roller bearing out of the end cover port
(Figure 3.53 right).
Remove the seal ring (Figure 3.54) and check the shiny surface on the cover if there is a deep hole (replace the end cover port if necessary).
Note: It is not recommended to use the seal ring again.
Be careful in ensuring that the fluid is kept in place when you perform the inspection, maintenance, testing, and repair of the product to ensure that the liquid is still feasible to use. Prepare the appropriate container before opening the compartment or disassembling the liquid-containing component to store the liquid.
Dispose of all fluids in accordance with local regulations.