Install Engine Oil Pan Assembly
Clean engine oil pan assembly. Note: Do not leave any residual sealant and oil dirt on the top of engine oil pan assembly. If there is residual sealant or oil dirt, please remove it with scraper knife or blade and spray high efficient detergent on joint surface and then clean joint surface with cleaning tape.
Clean cylinder block bottom, timing chain cover bottom, rear oil seal seat bottom and joint. Remove residual sealant and oil dirt on the bottom of each part, and dirt on each joint with scraper knife or blade. Spray high efficient detergent on joint surface and clean each bottom and joint with cleaning tape. Note: the cloth cannot remove residual sealant completely. It will affect seal quality of joint surface after curing. (3) Apply sealant on the joint surface of cylinder block and chain chamber cover assembly and rear oil seal seat assembly (four positions).
Install Rear Oil Seal Seat Assembly
Clean rear oil seal seat assembly and press rear oil seal into rear oil seal seat hole with a special tool. Press-in depth is away from joint surface of real oil seal seat: 2.5±0.3mm, i.e., oil seal shall not exceed rear end of oil seal seat. Clean rear oil seat joint surface and apply sealant uniformly. Note: 1Do not leave any residual sealant and oil dirt on joint surface. If there is residual sealant, please remove it with scraper blade and spray high-efficient detergent on joint surface and then clean joint surface top with cleaning tape.
Apply appropriate lubricating oil on the lip. Note: It can be used only after checking no paint, dirt and scratch is on rear oil seal lip seat. (4) Align location pin hole on oil seal seat with location pin on cylinder block. It is allowed to knock outer surface of oil seal seat slightly by hand or rubber hammer to make rear flange journal of crankshaft insert into oil seal lip and make oil seal seat lean against rear end of cylinder block reliably. Tighten hexagon head flange bolt according to the sequence as shown in the Fig.
Install chain chamber cover assembly
Use new front oil seal assembly and press it into chain chamber cover hole with a special tool. Press-in depth is away from joint surface of cylinder block: 0±0.5mm. After installing new front oil seal assembly, use your fingertip to dip lubricating oil to apply it on the lip of new front oil seal assembly. Do not apply lubricating oil on the outside. If using front oil seal assembly of original one, please check if front oil seal assembly lip and skeleton rubber is damaged or cracked. If it is defective, replace new front oil seal assembly.
Apply some lubricating oil on chain chamber cover gasket andpress it into the groove of OCV control valve to which chain chamber cover and cylinder head correspond. Be careful to avoid falling off. Note: Before installing gasket, it is necessary to check if seal surface is cracked, damaged and wrinkled. If any defect is found, please replace with new gasket. (Suggestion: it is better to use new gaskets.)
Install chain chamber cover assembly
Use special detergent (recommended Three Bond Super Detergent TB6602T or Kesaixin Efficient Detergent 1755EF) or cleaning tape (clean white cloth) to clean chain chamber cover assembly joint surface and make sure joint surface is clean. Spray special detergent on joint surface of engine block, cylinder head and chain chamber cover assembly (recommended Three Bond Super Detergent TB6602T). Keep it static for several minutes and remove fallen glue seam and other foreign matters on the surface with soft brush. Note: only soft copper brush can be used, because nylon soft brush will not clean completely. In addition, hard brush will damage joint surface.
CA4GA5 Engine Maintenance Manual
3.8 Lubrication system Note: After installing engine oil pump assembly, rotate it for check to determine leak tightness of engine oil pump assembly. Therefore, be careful during the course of checking engine oil pump assembly. Make sure each clearance is within normal range.
Check engine oil pump assembly Check the appearance of engine oil pump assembly Engine oil pump assembly sprocket, inner and outer rotors and housing shall not be deformed, cracked and warped. Otherwise, replace them. Clearance of outer rotor top end for engine oil pump Check the clearance between outer rotor top end and cylinder block front end with a feeler gauge: 0.7~0.8mm. Limit clearance: 1.3mm. Backlash of inner rotor Measure backlash of inner rotor with a feeler: 0.05~0.10mm. Clearance limit: 0.18mm.