Removal
1. Remove the timing belt and balance shaft drive belt (see Sections Removal, condition check and installation of gear wheels and balance shaft drive belt and Removal, condition check and installation of the timing belt and timing drive gears). Remove the front balance shaft gear and the rear balance shaft gear housing assembly. Disconnect the SKR/TDC sensor wiring from the main braid. Unscrew the four mounting bolts and remove the sensor from the oil pump housing.
2. Remove the engine oil pan (see Section Removal and installation the engine oil pan).
3. Disconnect the oil pickup assembly with the mesh filter and tube from the main bearing cap bridge and the pump housing.
4. Unscrew the mounting bolts and remove the oil pump from the engine.
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5. Loosen the mounting screws and remove the cover from the pump.
Note: To avoid stripping the slots in the heads of the fastening screws, it is better to loosen them using an impact screwdriver.
Examination
1. Measure the working clearances of the pump gears. Compare the results with the requirements of the Specifications. If the clearances are outside the permissible values, replace the pump.
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2. Unscrew the plug of the pressure-reducing valve and remove the valve spring and plunger from the seat in the pump body. Check the spring for deformations, and the plunger for scratches and scoring. Defective components are subject to replacement.
3. Install the gears into the pump body and fill the spaces between their teeth with technical petroleum jelly (as an initial fill during the initial start-up).
4. Lubricate the pump cover mounting screws with anti-seize sealant. Install the cover, screw in the screws and tighten them to the required torque. Install the spring and plunger of the pressure reducing valve into the pump body. After replacing the sealing washer, screw in the plug and tighten it securely.
Installation
1. Lightly coat the pump housing mating surface with RTV sealant. Make sure the guide pin is in place and install the pump, replacing the O-rings first. Coat the threads of the mounting bolts with RTV sealant, screw them in and tighten them to the required torque.
Note: The pump must be installed within 5 minutes after applying the sealant. Make sure that the chamfers on the internal gear of the pump are aligned with the corresponding chamfers on the crankshaft journal.
2. Install the gear assembly with the pinion housing onto the rear balance shaft. Then install the timing belt and balance shaft drive belt.
3. Install the CKP/TDC sensor in place, tightening the bolts securing it to the pump with the required force. Restore the original wiring connection.
4. Reinstall the oil pickup assembly, tightening the mounting bolts to the required torque (remember to replace the sealing gaskets).
5. Install the oil pan (see Section Removal and installation the engine oil pan).
6. Further installation is carried out in the reverse order of dismantling. Finally, do not forget to fill the engine with engine oil and fill the cooling system (see Chapter Settings and ongoing maintenance).
7. Start the engine and check it for any signs of leaks.
Original published on this resource: HondaBook.ru